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  • 2015-2019  (15,370)
  • 1985-1989
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  • 1
    Publication Date: 2021-05-06
    Description: While archaeological records indicate an intensive Mesolithic occupation of dune areas situated along river valleys, relatively little knowledge exists about environmental interactions in the form of land-use strategies and their possible local impacts. The combination of geoarchaeological, chronological, geochemical and palaeoecological research methods and their application both on a Mesoltihic site situated on top of a dune and the adjacent palaeochannel sediments allows for a detailed reconstruction of the local environmental development around the Soven site in the Jeetzel valley (Northern Germany) since ~10.5 ka cal BP. Based on the results, we identified four phases that may be related to local human impact twice during the Mesolithic, the Neolithic and the Iron Ages and are discussed on the backdrop of the regional settlement history. Although nearby Mesolithic occupation is evident on archaeological grounds, the identification of synchronous impacts on the vegetation in the local environmental records remains tentative even in respect of the broad methodical spectrum applied. Vice versa, human impact is strongly indicated by palaeoecological and geochemical proxies during the Neolithic period, but cannot be connected to archaeological records in the area so far. A younger phase of human impact – probably consisting of seasonal livestock farming in the wetlands – is ascribed to the Iron Age economy and comprises local soil erosion, raised concentrations of phosphates and urease, and the facilitation of grazing related taxa.
    Description: research
    Keywords: 551.7 ; aeolian sand ; pollen ; mesolithic ; iron age ; charcoal ; human impact ; OSL ; Neolithisation
    Language: English
    Type: article , Verlagsversion
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  • 2
    Publication Date: 2021-03-29
    Description: manual
    Keywords: 523.2 ; 550
    Type: article , draft
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  • 3
    Publication Date: 2021-05-06
    Description: Remarkable polygenetical structures were observed at a refinery rehabilitation site in Wedel/Holstein. The polygonal shaped, channel-like structures are incised in mid-Saalian clayey, chalk-rich till. They are symmetrically semicircular shaped and filled with calcareous, silty sands that can be interpreted as sandy reworked till with aeolian components. The width reaches from approx. 0.3 to 1.5 metres, the depth up to approx. 0.8 metres. Horizontal cracks up to more than 10 meters in lengths, occurring as narrow belts of sand with reddish colour, are often centrally aligned in the channel-like structures. The present-day red colour is not natural but related to pollution. These belts reach down to the bottom of the channel like structures. At the lower site of the channel-like structures glacitectonic fissures with a width up to a few centimetres were to be traced into a depth of several metres to the basis of the excavat ion. The genesis of the channel-like structures is discussed. e. g. a possible relation with the pre-existing glacitectonic joints resp. the expected periglacial paleohydrogeological setting.
    Description: research
    Keywords: 551.7 ; periglacial channels ; Weichselian periglacial ; frost wedges ; glacitectonism ; paleohydrogeology ; talik ; Elbe spillway
    Language: German
    Type: article , Verlagsversion
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  • 4
    Publication Date: 2021-05-06
    Description: Hochterrassen (High or Higher Terraces) are a prominent geomorphological feature of the Northern Alpine Foreland and have traditionally been attributed to the Rissian glaciation. However, distinct morphological sublevels observed for this feature have often raised the question of their age. This issue is exemplarily investigated here on the Langweider and Rainer Hochterrassen in the lower Lech valley using different relative and numerical dating techniques. The lowest sublevel, the Übergangsterrasse is only preserved in small patches at the western rim of the Rainer Hochterrasse and is most probably of early Würmian age. The sublevel of the Jüngere Hochterrasse is older than the Last Interglacial, as indicated by luminescence ages of overlying loess/palaeosol sequence and the development of a luvisol on top of the terrace gravel. This terrace is composed of stacked gravel units that represent at least two accumulation phases correlating with Marine Isotope Stage (MIS) 6 for the top gravel and MIS 7 to MIS 10 (or older) for the basal gravel. It is not yet clear, if the deposition of the basal gravel unit corresponds to one or more aggradation phases during the Middle Pleistocene. The highest sublevel, the Ältere Hochterrasse also shows a compositon of two stacked gravel units but so far, no numerical ages have been achieved for these units.
    Description: research
    Keywords: 551.7 ; northern alpine foreland ; middle pleistocene ; luminescence dating ; Hochterrassen ; fluvial terraces
    Language: English
    Type: article , Verlagsversion
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  • 5
    Publication Date: 2021-05-06
    Description: Crocuta crocuta spelaea (Goldfuss 1823) cranial and postcranial remains of the Pößneck region in the Zechstein Karst region of the Thuringian Mountains (Central Germany) were excavated historically in the Wüste Scheuer Cavity at Döbritz. Nearby, at the Krölpa gypsum karst open air site, additionally a woolly rhinoceros, partially scavenged by Ice Age spotted hyenas, was found. The amount at Wüste Scheuer Cavity includes chew damaged Coelodonta antiquitatis remains and is classified herein as communal den type. At both den/scavenging sites, only a small amount of prey material of Late Pleistocene megafauna of rare M. primigenius, mainly C. antiquitatis, E. c. przewalskii, and fewer B. priscus and R. tarandus was accumulated. The dominance of woolly rhinoceros, bison and Przewalski horse bones are typical for hyena bone assemblages in European low mountain regions, where mammoth was nearly absent as a result of topography. In the Thuringian Karst Mountains nine Late Pleistocene Ice Age spotted hyena den sites are identified. Solely hyena dens are present in Zechstein open air gypsum and limestone karstic regions of Bad Köstritz, Krölpa and Fuchsluken Cavities near Saalfeld. In the Wüste Scheuer their remains overlap with Middle Palaeolithic Neanderthal human camp sites, similar as in the Ilsen Cave at Ranis and Lindenthal Cave in Gera, which demonstrates competition for prey and shelter cavities. At such cave sites, bone remains were historically misinterpreted as „solely of Neanderthal human kitchen rubbish” or even as “bone tools” (e.g. “bone scrapers” = woolly rhinoceros tibia bones chewed by hyenas).
    Description: research
    Keywords: 551.7 ; late pleistocene ; Ice Age spotted hyenas ; den types ; Thuringian Mountains ; Central Germany
    Language: English
    Type: article , Verlagsversion
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  • 6
    Publication Date: 2021-03-29
    Description: Eine durch einen Bodenschurf aufgeschlossene Boden-Sediment-Folge einer alten Seeterrasse im Einzugsgebiet des Priesterbäker Sees zeigt deutliche Fazieswechsel im Uferbereich des Gewässers. Die Abfolge von liegenden humosen Sanden, welche einen ehemaligen Verlandungssaum nachzeichnen, limnischen Sanden mit Bodenbildung und hangenden Flugsanden belegt Änderungen in der Sedimentation, welche mit säkularen Grundwasser- bzw. Seespiegelschwankungen zu erklären sind. Mit Hilfe von geophysikalischen Datierungen lassen sich gegenüber dem heutigen Niveau höhere Wasserstände für den Priesterbäker See bzw. die so genannten „Specker Seen“ östlich der Müritz während des 7.–9. und 12.–14. Jahrhunderts ableiten.
    Description: research
    Keywords: 551 ; 554.3 ; seespiegelschwankungen ; mecklenburg ; Seeterrasse ; Priesterbäker See ; Slawenzeit
    Language: German
    Type: article , Verlagsversion
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  • 7
    Publication Date: 2021-05-06
    Description: C/O-stable isotope composition (VPDB) of speleothems from the Makkaronihalle of the Hüttenbläserschacht Cave in Iserlohn shows a clear separation between glacial and interglacial calcites. In contrast to normal speleothems (stalagmites, excentriques, crystals in cave ponds, draperies; δ18O: –4.0 to –6.1 ‰, δ13C: –4.9 to –10.9 ‰), rhombohedral crystal sinter and spherulitic speleoparticles are characterised by lower δ18O (–8.9 to –17.9 ‰) and higher δ13C values (+0.7 to –6.1 ‰). This suggests that these speleogenetic particles were formed in slowly freezing waterpools on ice during the transition from a stadial to an interstadial phase. Precise 230Th/U-dating shows younger Weichselian ages of 28.6 to 33.0 ka for these speleogenetic particles from north-west Germany. These formation periods indicate freezing conditions overlain by 34 m of hostrock and provide the minimum depth of permafrost penetration for the younger Weichselian in the area of the northern Sauerland (north-west Germany).
    Description: research
    Keywords: 551.7 ; permafrost ; Cryogenic calcites ; C/O isotopes ; Upper Weichselian ; ice caves ; north-western Germany
    Language: German
    Type: article , Verlagsversion
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  • 8
    Publication Date: 2021-05-06
    Description: On the basis of the work done by Strahl et al. (1994), the mollusc specimens in the Late Saalian glacial and Eemian interglacial sediments from the cliff outcrop of Klein Klütz Höved (NW Mecklenburg) were re-examined and, in the process, a few vertebrates (fishes, micromammals) were also found. The mollusc specimens from the Late Saalian sand and mud alone comprise approximately 40 species among which terrestrial varieties, e.g. Succinella oblonga, Pupilla loessica, P. pratensis, Vallonia tenuilabris or Vertigo genesii, are clearly predominant as far as the number of individual specimens is concerned. Among the limnic varieties were also found the glacial index species Pisidium obtusale f. lapponicum and P. stewarti. It was also possible to prove the northern-most presence for Germany of the steppe lemming Lagurus lagurus in the Late Saalian. In the Eemian mud, the molluscs found were almost exclusively limnic. This about 20 species comprising fauna is characte-ristic of a river system with calmer areas, oxbow lakes and in-coming springs. These fluvial conditions were confirmed by the freshwater bivalves Pisidium amnicum, P. supinum, P. moitessierianum, P. ponderosum and Unio tumidus. For the first time in Mecklenburg-Western Pomerania, evidence was found of the spring snail Belgrandia germanica as an interglacial index species. The limnic-fluvial section of the Eemian is topped by a cryoturbate structures. Its sandy, gravelly pockets contain marine molluscs. The index species for the marine Eemian found in the southern Baltic region are Polititapes senescens and Bittium reticulatum.
    Description: research
    Keywords: 551.7 ; molluscs ; Saalian deposits ; limnic and marine Eemian facies ; Belgrandia germanica ; micromammals ; Lagurus lagurus ; Mecklenburg-Western Pomerania
    Language: German
    Type: article , Verlagsversion
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  • 9
    Publication Date: 2021-03-29
    Description: Tendenziell fallende Grundwasserstände können vielfältige Ursachen haben, z.B. die Änderung der klimatischen Bedingungen, Modifikationen der Landnutzung oder die Entnahme von Grundwasser. Am Beispiel Südwest-Usedoms wird dargestellt, wie mögliche Einflussfaktoren analysiert und quantifiziert werden können. Für das Untersuchungsgebiet zeigte sich, dass die über Jahrzehnte gesunkenen Grundwasserstände überwiegend aus der Kahlschlagbewirtschaftung des Waldes resultieren und damit weniger einen Trend als eine überjährliche Schwankung ausweisen.
    Description: research
    Keywords: 551 ; 554.3 ; forest ; Sickerwasser ; Grundwasser ; Grundwasserneubildung ; Wald ; Landschaftswasserhaushalt ; Trend ; Grundwasserentnahme ; geohydraulisches Modell ; Landscape water regime ; Groundwater ; Groundwater recharge ; percolate water ; Groundwater extraction ; Groundwater modelling ; Geohydraulic model ; Grundwasserströmung ; Modellierung
    Language: German
    Type: article , Verlagsversion
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  • 10
    Publication Date: 2021-05-06
    Description: A soil-sediment sequence in NE Germany has provided information about the duration and intensity of formation of a Bw horizon in Holocene slope deposits. With a combination of optically stimulated luminescence (OSL), 14C- and archaeological dating methods, colluvial layers taken from a former castle wall trench constructed during the Bronze Age were dated. With this chronology, the relative age of the postsedimentary Bw horizon formation within the colluvial sediments was derived, resulting in the first valid pedochronological data (maximum and minimum age) for a Holocene Bw horizon in NE Germany. The horizon was formed within 2400 years. Weathering and brunification have altered the Holocene parent material. However, the geochemical characteristics of the Holocene soil formation are weak compared to Bw horizons from the Late Glacial and the Late Glacial to Holocene. The results presented here enhance our understanding of soil formation processes in northern Germany, while highlighting the role of colluvial layers as sedimentological tracers of Holocene soil formation processes.
    Description: research
    Keywords: 551.7 ; holocene ; ne germany ; dating ; Bw horizon ; Slope deposits ; soil formation
    Language: English
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  • 11
    Publication Date: 2021-03-29
    Description: Die hier dargestellten Methoden dienen der drei-dimensionalen, interaktiven Bearbeitung der Potentialfelder Gravimetrie und Magnetik, sowie ihrer Ableitungen (Schwere- und Magnetik-Tensor). Die Methodik ist sowohl für terrestrische, als auch Bohrloch- und Airborne-Verfahren einsetzbar. Um die Mehrdeutigkeit der interaktiven Bearbeitung bei der Vorwärtsrechnung und Inversion der Felder zu minimieren, beziehen die numerischen Verfahren verstärkt eine schnelle Computergraphik ein, sodass die Randbedingungen (meist aus der Reflexionsseismik) für die Berechnungen durch den Anwender stets sichtbar sind. Die Vorwärtsrechnungen basieren auf der Approximation geologischer Strukturen durch Polyeder, die Inversionsrechnungen für Geometrie und Gesteinsparameter (Dichte, remanente und induzierte Gesteinsmagnetisierung) werden mit Hilfe der CMA-ES (covariance-matrix-adoption evolution strategy) durchgeführt. CMA-ES ist die ideale Methode, um stark nicht-lineare und komplexe Probleme der Geophysik zu optimieren. Der Benutzer hat die Möglichkeit, die Inversion visuell zu steuern und zu beeinflussen. Die die Untergrundstrukturen approximierenden Polyeder sind durch konstante Gesteinsparameter charakterisiert; durch die Überlagerung eines Voxelmodells sind auch Strukturen mit hochgradig variabler Gesteinsparameterverteilung darstellbar. In vielen Anwendungen liegen häufig Daten vor, deren Auflösung für eine Potentialfelder-Modellierung nicht unbedingt erforderlich ist: Hier helfen neu entwickelte automatisierte Verfahren der gestalt-erhaltenden Datenreduktion. Für die Visualisierung von Potentialfeldern in Bohrlöchern werden Beispiele für eine nutzerfreundliche Visualisierung gezeigt.
    Description: conference
    Keywords: 622.15 ; 550.28 ; 550 ; Gravimetrie ; 3D Modelling ; Visualisierung ; Bohrlochtool
    Language: German
    Type: anthologyArticle , publishedVersion
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  • 12
    Publication Date: 2021-05-06
    Description: A radiocarbon-dated peat profile from Rond Pertuis supérieure mire in the uplands of the Northern Vosges is studied using palynological methods. The profile dates from the middle Atlantic period (4500–3100 B.C.) to recent times. During the middle of the Atlantic period an oak forest rich in pine covered the Northern Vosges. Fir and beech immigrated at the end of the Atlantic leading to the decline of oak and pine in the forest. This also marked the onset of decisive human influence on the development of the terrestrial vegetation. Five land use phases were detected, the first one at the end of the Neolithic period (~4000–2200 B.C.). Subsequently, continuous land use is evident from the Bronze Age (2200–800 B.C.) up to now. In the late Middle Ages (A.D. 900–1500) and the early Modern Era (since A.D. 1500), the woodlands were completely altered by human activities. During the 19th century modern forestry introduced spruce into the investigated area in the Northern Vosges. Spruce afforestation then accelerated in the middle of the 20th century.
    Description: research
    Keywords: 551.7 ; holocene ; pollen analysis ; france ; human impact ; Northern Vosges
    Language: English
    Type: article , Verlagsversion
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  • 13
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    Ernst-Moritz-Arndt Universität Greifswald
    Publication Date: 2021-12-09
    Description: Die vorliegende Arbeit hat das Ziel, gesellschaftliche Entwicklungen im Naturpark Barnim zu untersuchen und darzustellen. Eine Zusammenfassung der Ergebnisse zweier quantitativer Bevölkerungsbefragungen untersucht die Einstellung der Menschen in Bezug auf ihre Region, Natur und Landschaft sowie in Bezug auf den Naturpark Barnim selbst. Die Ergebnisse liefern der Naturparkverwaltung damit empirische Daten, um das Management an die lokalen Bedürfnisse anzupassen. Begleitet wird diese Studie von einem Vorwort des Barnimer Naturparkleiters Dr. Peter Gärtner sowie von zwei Abschlussarbeiten, die im Rahmen des Bachelorstudiums am Lehrstuhl für Nachhaltigkeitswissenschaft und Angewandte Geographie entstanden. Für ausgewählte Berliner Stadtbezirke werden hierbei die Wahrnehmung und die Akzeptanz des Naturparks sowie der ihn prägenden Landschaften analysiert.
    Description: In Kooperation mit: Naturschutzfonds Brandenburg
    Description: research
    Keywords: 910 ; QGB 640 ; QFG 050 ; Brandenburg {Geographie} ; Regionalanalyse und Strukturforschung {Raumordnung und Raumplanung} ; Naturpark ; Barnim ; Sozioökonomisches Monitoring ; Regionale Identität
    Type: map , publishedVersion
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  • 14
    Publication Date: 2021-12-09
    Description: Die vorliegende Arbeit entstand im Rahmen des Forschungsprojektes COMTESS (Sustainable Coastal Land Management: Trade-offs in Ecosystem Services). Ziel des COMTESS-Projektes ist es, konkrete aktions- und entscheidungsorientierte Vorschläge auf lokaler und regionaler Ebene zu erarbeiten, die eine nachhaltige Nutzung gefährdeter Küstenlandschaften an der ostfriesischen Nordseeküste und der Vorpommerschen Boddenlandschaft als Antworten auf den Klimawandel fördern. Der erste Teil dieser Arbeit beschäftigt sich mit regionaler Identität. Die Wahrnehmung und Bewertung der Bevölkerung von Landschaft und Landnutzung sowie wahrgenommene Veränderungen werden dahingehend untersucht, in wie weit sie die regionale Identität der Bevölkerung beeinflussen. Der zweite Teil der Arbeit beschäftigt sich mit der Bewertung von Rückdeichung als präferierte Maßnahme im Küstenzonenmanagement. Identifiziert werden Diskrepanzen zwischen der positiven Bewertung dieser Maßnahme durch Wissenschaft, Politik und Regionalplanung und der negativen Bewertung von Rückdeichung auf Seiten der Bevölkerung.
    Description: In Kooperation mit: Bundesministerium für Bildung und Forschung (BMBF)
    Description: research
    Keywords: 910 ; QGB 570 ; QFG 050 ; QG 606 ; Mecklenburg-Vorpommern {Geographie} ; Regionalanalyse und Strukturforschung {Raumordnung und Raumplanung} ; Angewandte Geographie der Küsten {Geographie} ; Nachhaltiges Landmanagement ; Küstenzonenmanagement ; Klimawandelanpassung ; Rückdeichung ; Regionale Identität
    Language: English
    Type: map , publishedVersion
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  • 15
    Publication Date: 2022-10-07
    Description: Magmatic settings involving active volcanism are potential locations for economic geothermal systems due to the occurrence of high temperature and steam pressures. Indonesia, located along active plate margins, hosts more than 100 volcanoes and, therefore, belongs to the regions with the greatest geothermal potential worldwide. However, tropical conditions and steep terrain reduce the spectrum of applicable exploration methods, in particular in remote areas. In a case study from the Lamongan volcanic field in East Java, we combine field-based data on the regional structural geology, elemental and isotopic composition of thermal waters, and the mineralogical and geochemical signatures of volcanic rocks in exploring hidden geothermal systems. Results suggest infiltration of groundwater at the volcanoes and faults. After infiltration, water is heated and reacts with rocks before rising to the surface. The existence of a potential heat source is petrologically and geophysically constrained to be an active shallow mafic-magma chamber, but its occurrence is not properly reflected in the composition of the collected warmed spring waters that are predominantly meteoric in origin. In conclusion, spring temperature and hydrochemistry alone may not always correctly reflect the deep geothermal potential of an area.
    Keywords: ddc:551
    Language: English
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  • 16
    Publication Date: 2022-07-27
    Description: Ausgewertet wurden eigene Messungen und tektonische Literaturangaben im Pfälzerwald und seinen Nachbargebieten. Neben normalen Störungen (Abschiebungen) sind vor allem Schräg- bzw. Horizontalbewegungen und die sie begleitenden Scherklüfte (Horizontalharnische) von Interesse. Am Rand des Oberrheingrabens (Haardtrand) kommen sogar Falten und (Schräg-) Aufschiebungen vor. Die Strukturen entstammen mehreren unterschiedlichen Deformationsereignissen zwischen dem Oberjura und heute (Abb. 8 und 26, Tab. 1). Besonders ausgeprägt ist die früheozäne Horizontaltektonik, die auf eine im Uhrzeigersinn rotierende Nord-Süd- Schubspannung zurückging (s1 = 161 bis 10° Streichen). Deren horizontalen Versätze erreichen 1,7 km. Die oberjurassische (s1 = 80 bis 95°) und die oberoligozäne (s1 = 35 bis 45°) Schertektonik ist deutlich, aber von geringerer Bedeutung. Die unterkretazischen, die mittelmiozänen und die subrezenten Scherbeanspruchungen waren relativ schwach. Wichtige Dehnungsereignisse fanden im Mitteljura und im Unteroligozän statt, zwischenzeitliche Extension im Zeitraum Oberplio-Pleisto-Holozän ist ebenfalls nachweisbar. Erzgebirgisch (WSW-ENE) streichende Sockelstrukturen – schon im Buntsandstein synsedimentär aktiv – wurden im Mitteljura ins Deckgebirge durchgepaust und nachfolgend verschiedentlich mobilisiert. Die herzynisch (Nordwest-Südost) streichenden Querstörungen bilden spätvariskische Transferstörungen (STOLLHOFEN 1998) im paläo - zoischen Unterlager ab. Sie sind im Oberjura ins Deckgebirge durchgepaust und sinistral scherend bewegt worden. Im Eozän wurden sie dextral invertiert und dann im Neogen dehnend überprägt. Ihre durchgepausten „Spuren“ formierten im Gebirgskörper vergleichsweise mobile und dadurch diagnostisch wichtige „Querstörungszonen“ unterschiedlicher Breite und Prägnanz.
    Description: The Tectonic development in the Palatine Forest (Pfälzerwald) with its adjacent regions was studied. Own structural measurements and tectonic data derived from regional literature have been interpreted. Not only normal faulting but especially remains of horizontal crustal motions were analysed. The latter comprised strikeslip faults and accompanying shear joints and planes with oblique resp. horizontal slip striations. At the edge of the Upper Rhine Graben even folds and (oblique) thrust faults occur in the covering rocks of late permian and early triassic age. All these structures can be assigned to several different paleostress fields, which occured between Upper Jurassic and today (fig. 8 and 26). Especially accentuated were the strike-slip movements of early eocene times. They were caused by North-South-directed compressional stresses, slowly rotating clockwise (s1 striking 161° to 10°). The horizontal fault throws reach 1.7 km. The shear tectonics of upper jurassic (s1: 80 to 95°) and upper oligocene age (s1: 35 to 45°) are noticeable, but of lower importance. The shear strains of lower cretaceous, middle miocene and subrecent age appear relatively weak. Important extensional phases happened in middle jurassic and in lower oligocene times. Interfering extension can also be traced in the Upper Pliocene–Pleistocene– Holocene time span. WSW-ENE striking structures of the basement, which had already been slightly active in lower Triassic times, were traced into the covering rocks of the (early) mesozoic Pfälzerwald-succession during middle Jurassic times and mobilized in different ways afterwards. Northwest-Southeast striking faults (so-called Querstörungen) are due to late variscan transfer faults (sensu STOLLHOFEN 1998) in the Paleozoic basement. They were traced into the covering rocks during Upper Jurassic while they have carried out sinistral shear motions. During early eocene times they were dextrally inver ted and then, during Neogene, extensionally overprinted. Their traced fractures formed tectonical mobile zones of different width and consiseness, which are of high diagnostic value.
    Description: 1. Einführung 1.1. Frühere Bearbeitungen 1.2. Datenbasis und methodische Grundlagen 2. Ererbte Strukturen 2.1. Erzgebirgisch streichende Strukturen 2.2. Nordwest-Südost-streichende Querstörungen 3. Eozäne Bewegungen 4. Oligozäne Bewegungen 5. Miozäne Bewegungen 6. Pliozäne bis subrezente Bewegungen 7. Reliktische Spuren mesozoischer Deformationen 8. Zeitlicher Ablauf der Deformationsgeschichte 9. Ausblick Schriften
    Description: research
    Keywords: ddc:551.8
    Language: German
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  • 17
    Publication Date: 2022-08-02
    Description: Mit Hilfe taphonomischer Befunde wird das Häutungsverhalten der Trilobiten Aulacopleura (Paraaulacopleura) n. sp., Cyphaspides n. sp., Chotecops sollei Struve, 1984 und Kettneraspis sp. aus dem Steinbruch “Gutenacker“ sowie Diademaproetus n. sp., Rhenocynproetus n. sp., Cyphaspis spp., Harpes sp., Acastoides n. sp., Destombesina n. sp., Barrandeops n. sp., Kettneraspis seiberti Basse, 2004, Leonaspis kleini Basse, 2004 und Koneprusia spp. von der Fundlokation “Heckelmanns Mühle” beschrieben. Beide Örtlichkeiten befinden sich im Rupbachtal, einer bekannten Fund - region für fossile Faunen aus dem Unter-/Mitteldevon-Grenzbereich. Innerhalb der verschiedenen Trilobitenarten sowie innerartlich wurden hierin eine Vielzahl verschiedener Häutungsmodi nachgewiesen. Der Nachweis infaunaler Häutungen erklärt womöglich das Vorkommen unzerstörter Häutungsensembles in den hiesigen Schlammströmen (Lahars). Diese endobenthischen Häutungen lassen sich an bestimmten Häutungskonfigurationen erkennen. Dazu wird neben den bisher bekannten Mustern hier zusätzlich der „Akkordeon-Effekt“ eingeführt. Den in einigen Odontopleuridae besonders ausgebildeten vorderen Randanhängen der Pleuren wird eine Verankerungsfunktion zur Unterstützung des Häutungsvorgangs zugeschrieben. Mit der „Anker-Strategie“ wird eine spezielle Häutungsweise bei Arten mit ankerförmigem Cephalon, wie z. B. Diademaproetus, für möglich gehalten und beschrieben. Innerhalb der Fauna von „Heckelmanns Mühle“ folgten Häutungen eher individuellen Rhythmen während in „Gutenacker“ Ansammlungen von Häutungsresten auf zeitlich koinzidierende Häutungsevents hinweisen. Der letztere Lebensraum wurde offenbar von manchen Arten speziell zur Häutung aufgesucht.
    Description: Abstract: Some molting-habits and related taphonomic implications of the trilobites Aulacopleura (Paraaulacopleura) n. sp., Cyphaspides n. sp., Chotecops sollei Struve, 1984 and Kettneraspis sp. from the “Gutenacker” quarry such as Diademaproetus n. sp., Rhenocynproetus n. sp., Cyphaspis spp., Harpes sp., Acastoides n. sp., Destombesina n. sp., Barrandeops n. sp., Kettneraspis seiberti Basse, 2004, Leonaspis kleini Basse, 2004 and Koneprusia spp. from the “Heckelmanns Mühle” fossil site are described. Both sites are situated in the Rupbach-valley in the south-eastern part of the Rhenish Massif, known for its numerous transitional Lower/Middle Devonian faunas. The variety of supposed molt procedures was high both extra- and intraspecifically. Infaunal molting occurred in some cases and may explain the occurrence of moult ensembles inside of some debris flows (lahars). Infaunal molting can be recognized by typical molting configurations as according to previous work and/or the “accordion-effect”, introduced herein. The function of specific anterior pleural spines, developed in some Odontopleuridae is interpreted as an auxiliary means for exuviation. An “anchor molt strategy” is considered possible and described for species with anchor-shaped cephala, especially Diademaproetus. In the “Heckelmanns Mühle”-fauna molting rather followed individual rhythms whereas in “Gutenacker” clustered molt remains are indicative of synchronized molting events. The latter site was apparently frequented especially for exuviation by some species.
    Description: research
    Keywords: ddc:562
    Language: German
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  • 18
    Publication Date: 2022-09-29
    Description: Die Oppenheim-Formation ist im gesamten Mainzer und Hanauer Becken verbreitet und stellenweise auch in der Wetterau-Senke nachgewiesen. Sie ist gekennzeichnet durch fossilreiche, überwiegend stark karbonatische Sedimente. Verbreitet treten auch tonig-mergelige Zwischenlagen und an den Beckenrändern Quarzsand auf. Von der liegenden Hochheim-Formation ist die Oppenheim-Formation lithofaziell und biofaziell verschieden durch starke Reduktion der Algenkalkbildung und wesentlich arten-und individuenreichere marin-brackische Faunen, ebenso wie durch eine andersartige Landschneckenfauna. Im höchsten Teil der Oppenheim-Formation setzt Aussüßung ein, die eine faunistische Abtrennung zur hangenden Oberrad- Formation ermöglicht. Der Ablagerungsraum wird als Karbonatplattform im Randbereich des Oberrheingrabens gedeutet, wobei Schichtlücken und der litorallagunäre Charakter der Fauna variable, aber überwiegend sehr geringe Wassertiefen anzeigen. Die aquatischen Faunen sind mäßig divers, wobei Neuerscheinungen und Aussterben von Mollusken eine im ganzen Ablagerungsraum durchgehende Untergliederung in 7 Einheiten (Aquatische Molluskenzonen Vb bis VIe) ermöglichen. Ansätze zu entsprechenden Untergliederungen mittels Foraminiferen, Ostrakoden und Otolithen werden aufgezeigt. Nach Nannoplankton kann der Basisbereich der Oppen - heim-Formation in das jüngere Chattium (NP 25) eingestuft werden. Zuordnungen zur Mammalierstratigraphie sind derzeit nur begrenzt möglich, weil die präzise lithostratigraphische Herkunft der zahlreichen Funde größtenteils unbekannt ist; der obere Bereich der Oppenheim-Formation, wahrscheinlich aber auch tiefere Teile, gehören der Mammalierzone MN 1 an.
    Description: Abstract: The Oppenheim Formation is distributed throughout the entire Mainz and Hanau Basin and furthermore proved in parts of the Wetterau-Depression. It is characterized by fossiliferous, predominantly highly carbonatic sediments. Also marly clays are widely spread as intercalations and at the basin margins quartz sand become significant. The Oppenheim Formation is distinguished from the underlying Hochheim Formation by its litho-and biofacies: strong reduction of algal limestone formation and significantly richer (in diversity and frequency) marine-brackish faunas, as well as in a change of the land snail associations. In the uppermost part of the Oppenheim-Formation a reduction in salinity sets in, which facilitates a faunistic differentiation from the overlying Oberrad Formation. The sedimentation area is inter - preted as a carbonate platform at the margin of the Upper Rhine Graben; discontinuities and the littoral-lagoonal character of the faunas suggest predominantly shallow waters. The aquatic faunal associations are modestly diverse; immigrations and extinctions of mollusks enable a subdivision throughout the entire area of distribution in 7 units (Aquatic mollusk zones Vb to VIe). Indications of subdivisions by foraminifers, ostracods and otoliths are shown. The basal part of the Oppenheim Formation can be attributed to the late Chattian (Nannoplankton zone NP 25). Datings by mammal stratigraphy are currently only possible to a very limited extent, as the precise lithostratigraphic origin of many finds was not recorded; the upper part of the Oppenheim Formation, and probably also deeper parts, are in mammal zone MN1.
    Description: research
    Keywords: ddc:554.3
    Language: German
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  • 19
    Publication Date: 2022-10-06
    Description: Um einen Überblick über das Vorkommen der Lepospondyli des saarpfälzischen Rotliegend zu erhalten, wurden in verschiedenen Seeablagerungen enthaltene Knochen untersucht. Aus der Remigiusberg-Formation stammen die ältesten nachgewiesenen Lepospondyli-Reste (Microsauria- und Lysorophia-Wirbel). Die etwas jüngere Altenglan-Formation beinhaltet Altenglanerpeton und die noch etwas jüngere Meisenheim-Formation Batropetes. Hinweise auf Lepospondyli fehlen von der Donnersberg- bis Wadern-Formation – außer im Dornbach-See mit Nectridea, Lyso - rophia und Aïstopoda.
    Description: Abstract: For gaining an overview of the incidence of lepospondyls in the Saar- Nahe-Basin, bones preserved in sediments of different lakes were examined. The oldest evident remains of lepospondyls (vertebrae of Microsauria and Lysorophia) come from the Remigiusberg Formation. The younger Altenglan Formation contains Alten glanerpeton and the even younger Meisenheim Formation contains Batropetes. Indications of lepospondyls are missing from Donnersberg Formation until Wadern Formation – except for the Dornbach-Lake containing Nectridea, Lysorophia and Aïstopoda.
    Description: research
    Keywords: ddc:567.8
    Language: German
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  • 20
    facet.materialart.
    Unknown
    Hochschule für nachhaltige Entwicklung Eberswalde (Hrsg.)
    Publication Date: 2022-06-14
    Description: Moore sind faszinierende Lebensräume, die überaus bemerkenswerte Funktionen im Wirkungsgefüge einer Landschaft erfüllen. Der Erhaltungszustand der Moore in Deutschland ist jedoch nach wie vor besorgniserregend und führte zu verstärkten Aktivitäten in den letzten Jahren zum Schutz und Erhalt dieser gefährdeten Ökosysteme. Eine Grundvoraussetzung für erfolgreiche Renaturierungen ist die oft vernachlässigte Kenntnis über den unterirdischen Schichtenaufbau eines Moores. Dieser Schichtenaufbau kann aus verschiedenen, teilweise in einem charakteristischen Wechsel vorliegenden Moorsubstraten (vor allem Torfe und Mudden) bestehen. Die für eine effektive Managementplanung so entscheidende korrekte Ansprache dieser Moorsubstrate ist allerdings bislang nur spezialisierten Fachleuten möglich. Daher ist es das Ziel der „Steckbriefe Moorsubstrate“, durch eine umfassende und fachlich fundierte Darstellung mit detaillierten Beschreibungen und zahlreichen aussagekräftigen Fotografien die Substratansprache erheblich zu erleichtern und einem breiten Anwenderkreis zu ermöglichen. Die Sammelmappe „Steckbriefe Moorsubstrate“ gliedert sich in zwei Teile: Den Kern bilden die als Geländeunterlagen konzipierten 24 eigentlichen Steckbriefe der häufigsten Moorsubstrate sowie ein darauf abgestimmter Bestimmungsschlüssel und eine Übersicht für die Ableitung von Zersetzungsgraden und Konsistenzstufen. Der Einführungsteil liefert zahlreiche Informationen rund um die Themen Moor, Moortypen, Moorsubstrate und Moorböden. Weiterhin finden Sie hier Hinweise zum Vorgehen bei der Aufnahme eines Moorprofils sowie zur Ableitung des Moortyps anhand des erfassten Schichtenaufbaus.
    Description: http://www.mire-substrates.com/
    Description: research
    Keywords: ddc:553.21
    Language: German
    Type: doc-type:book , publishedVersion
    Format: 154
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  • 21
    Publication Date: 2022-08-09
    Description: Im Jahr 2016 wird an die 200-jährige Wiederkehr der Inbesitznahme des neu gebildeten Landesteils „Rheinhessen“ durch das Großherzogtum Hessen erinnert. Obwohl die Eigenständigkeit von Rheinhessen als selbständiger politischer Verwaltungs einheit schon wieder Geschichte ist, beschäftigen sich im Vorfeld dieses Jubiläums zahlreiche Gremien, Öffentliche Amtsträger und Printmedien mit der Frage nach einer regionalen Identität dieser Region. Aus geologischer Sicht ist dabei zunächst die Frage nach dem Werden und einheitlichen geologischen Aufbau der rheinhessischen Landschaft zu diskutieren und wie sich die Landnutzungsformen durch die Menschen im Freiraum der Landschaft und in den Gemeinden widerspiegeln. Bei der Errichtung von zahlreichen, häufig denkmal geschützten Bauwerken spielt die Verwendung einheimischer Gesteine wie Kalksteine, Sandsteine, Andesite und Rhyolithe in unverwechselbarer regionaltypischer Ausbildung eine wichtige Rolle. Aus örtlich vorkommendem Löss, Mergeln und Tonen gebrannte Mauer- und Dachziegel tragen in den historischen Ortskernen rheinhessischer Gemeinden ebenfalls dazu bei, eine sichtbare regionale Identität zu begründen.
    Description: Abstract: In 2016 people will look back to the 200th anniversary of the appropriation of “Rheinhessen” as a newly formed part of the grand duchy of Hessen. Although the status of Rheinhessen as an independent political administrative unit is already history, numerous committees, officials and printed media will contribute to the question of the regional identity of Rheinhessen. From a geological point of view it is necessary to discuss first of all the origin and the uniform geological structure of the landscape. Furthermore it is essential to clarify how the form of land use by men is reflected in the open land as well as in the villages and towns. The use of domestic rocks plays a dominant role in the construction of versatile, frequently historic landmarked buildings, using limestones, sandstones, andesites and rhyolithes in an distinctive typical formation. Bricks and roof tiles made of local loess, marl and clay contribute well in forming a regional identity in the historic middle of Rheinhessen villages and towns.
    Description: 1. Einleitung 2. Entstehung und Abgrenzung von Rheinhessen 3. Merkmale der Kulturlandschaft 4. Typisch rheinhessisch – Auf der Suche nach einer Identität 5. Charakteristik der Geologie von Rheinhessen 6. Die Naturwerksteine und ihre Bauwerke 6.1. Kalkstein, Mergel 6.2. Sandstein 6.3. Rhyolith („Quarzporphyr“) 6.4. Andesit 6.5. Quarzit, Grauwacke, Schiefer 6.6. Kombinationen rheinhessischer Naturwerksteine und Ziegel Schriften
    Description: research
    Keywords: ddc:690 ; ddc:550
    Language: German
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  • 22
    Publication Date: 2024-02-28
    Description: Abstract: Slightly humified Sphagnum peat is (next to strongly humified Sphagnum peat) the most important raw material for the production of horticultural substrates. The global annual consumption amounts to 30 million m³ of which 3 million m³ are consumed in Germany. This fossil raw material is excavated from peatlands. As its availability is strongly decreasing in Germany, it is increasingly imported from the Baltic countries. Alternative raw materials with comparable properties are not yet available in sufficient amounts. Peat moss (Sphagnum) biomass has similar physical and chemical properties as slightly humified peat and its use as a raw material for growing media in professional modern horticulture has been tested successfully. The cultivation of peat moss biomass (Sphagnum farming) on rewetted bogs provides several advantages. Rewetting halts the further degradation of the peat body and reduces the emission of greenhouse gases. Sphagnum farming ensures a lasting supply of high quality renewable raw material. Moreover, it supports regional economies and the conservation and protection of biodiversity, water resources and peat archives. Over the past decade, extensive studies on the cultivation of peat moss have been carried out by the University of Greifswald in cooperation with various research and industrial partners. Field tests have convincingly demonstrated the feasibility of large scale Sphagnum farming on degraded bog peat sites.
    Description: Zusammenfassung: Weißtorf (schwach zersetzter Hochmoortorf) ist, neben Schwarztorf (stark zersetzter Hochmoortorf), der wichtigste Substratrohstoff und Produktionsgrundlage im modernen Gartenbau. Weltweit werden dafür jährlich 30 Mio. m³ Weißtorf, davon 3 Mio. m³ in Deutschland verbraucht. Dieser fossile Rohstoff wird aus Mooren abgebaut, und seine Verfügbarkeit sinkt in Deutschland stark, so dass der Bedarf zunehmend durch Torfimporte vorwiegend aus den baltischen Ländern, gedeckt werden muss. Alternative Rohstoffe, die die Substratqualitäten von Weißtorf aufweisen und in ausreichender Menge verfügbar sind, fehlen bislang. In pflanzenbaulichen Tests wurde gezeigt, dass Torfmoos-Biomasse gleiche Substrateigenschaften wie Weißtorf aufweist und als Substratrohstoff geeignet ist. Torfmooskultivierung bietet durch nasse Moorbewirtschaftung einen Erhalt des Torfkörpers, die dauerhafte Versorgung der Torf- und Humuswirtschaft mit einem nachwachsenden Rohstoff in Verbindung mit regionaler Wertschöpfung, die Verringerung der Treibhausgasemissionen im Vergleich zur herkömmlichen Nutzung sowie weitere Vorteile, wie Arten-, Gewässer- und Archivschutz. Die Universität Greifswald führt, gemeinsam mit zahlreichen Projektpartnern, seit mehr als 10 Jahren Untersuchungen zur Kultivierung von Torfmoosen (Sphagnum) durch. In Feldversuchen werden dabei die Machbarkeit und die Möglichkeiten einer großflächigen Umsetzung auf degradierten Hochmoor standorten demonstriert.
    Description: DFG, SUB Göttingen, DGMT
    Description: research
    Keywords: ddc:553.21 ; ddc:630.914 ; Moor ; mire ; peatland ; land-use ; Sphagnum ; substrate ; Wiedervernässung ; Paludikultur
    Language: German
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  • 23
    facet.materialart.
    Unknown
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Description: The upper air soundings are normally performed once a day to measure vertical profiles of air pressure, temperature, relative humidity and the wind vector. Helium filled balloons (TOTEX 600 g, 800 g) were used to carry Vaisala RS92-SGPW radiosondes. Whenever possible, the launches were performed about 10 UTC. Condensed measurements (TEMP Format FM-35) were transferred without delay into the Global Telecommunication System GTS were they contribute for the world wide weather forecasts. The profile data were taken every 5-10 seconds which result in a vertical profile resolution of about 25-50 meter. The profiles start at the helideck 10 m above sea level and terminate at the burst level of the balloons, normally at heights between 25 and 37 km.
    Keywords: AWI_Meteo; Meteorological Long-Term Observations @ AWI
    Type: Dataset
    Format: application/zip, 90 datasets
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  • 24
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Max, Lars; Riethdorf, Jan-Rainer (2015): High-resolution IP25-based reconstruction of sea-ice variability in the western North Pacific and Bering Sea during the past 18,000 years. Geo-Marine Letters, https://doi.org/10.1007/s00367-015-0432-4
    Publication Date: 2023-03-16
    Description: Due to its strong influence on heat and moisture exchange between the ocean and the atmosphere, sea ice is an essential component of the global climate system. In the context of its alarming decrease in terms of concentration, thickness and duration, understanding the processes controlling sea-ice variability and reconstructing paleo-sea-ice extent in polar regions have become of great interest for the scientific community. In this study, for the first time, IP25, a recently developed biomarker sea-ice proxy, was used for a high-resolution reconstruction of the sea-ice extent and its variability in the western North Pacific and western Bering Sea during the past 18,000 years. To identify mechanisms controlling the sea-ice variability, IP25 data were associated with published sea-surface temperature as well as diatom and biogenic opal data. The results indicate that a seasonal sea-ice cover existed during cold periods (Heinrich Stadial 1 and Younger Dryas), whereas during warmer intervals (Bølling-Allerød and Holocene) reduced sea ice or ice-free conditions prevailed in the study area. The variability in sea-ice extent seems to be linked to climate anomalies and sea-level changes controlling the oceanographic circulation between the subarctic Pacific and the Bering Sea, especially the Alaskan Stream injection though the Aleutian passes.
    Keywords: AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 25
    facet.materialart.
    Unknown
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Description: FIL2013: Polar 6 conducted a systematic digital photographic aerial survey of the area of the Filchner Outflow System during two survey flights from Halley VI on 15 and 16 November 2013. The total survey distance covered 3,000 km each on 15 (eastern section) and 16 (western section) November 2013. Due to a low cloud ceiling on 15 November, the first flight operation was terminated prematurely and thus the westernmost track could not be flown. This track was flown on 16 November, and the total number of tracks numbered 11 instead of 12 as had been planned originally. FIL2014: Visual surveys of pack ice seals using helicopters were conducted from 4 January to 9 February 2014 from aboard RV Polarstern (PS82). For all seal related operations (including deployments of satellite transmitte rs and reconnaissance flights) a total of 30:13 hours during 20 flights were flown (MIN 0:11; MAX 3:13). The survey region was sampled by flying systematically spaced line transects (parallel lines approximately 10 nm apart) whenever ship position and weather conditions allowed, with out clustering transects in areas of easier access. When a full transect length could not be flown on a day, we attempted to complete (extend) the particular transect on a following day.
    Keywords: Marine Mammal Tracking; MMT
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 26
    Publication Date: 2023-03-14
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Cell density; Cell density, standard deviation; Figure; pH; Species
    Type: Dataset
    Format: text/tab-separated-values, 43 data points
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  • 27
    Publication Date: 2023-03-14
    Keywords: Aleutian Islands Alaska; Attu_Island; BIOACID; Biological Impacts of Ocean Acidification; Constant; Distance; DIVER; pH; Sample code/label; Sampling by diver; δ11B
    Type: Dataset
    Format: text/tab-separated-values, 455 data points
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  • 28
    Publication Date: 2023-03-14
    Keywords: Biomass; Biomass, standard error; Experiment day; pH; pH, standard deviation; Species; Strain; Time in hours
    Type: Dataset
    Format: text/tab-separated-values, 288 data points
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  • 29
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Bottom water temperature; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, partial pressure; Carbon dioxide, partial pressure, standard deviation; Carbon dioxide, standard deviation; CIMR_V1-3_C1-3; Columbretes Islands, Mediterranean Sea; CTD/STD SD204, SAIV A/S; DATE/TIME; Group; MULT; Multiple investigations; pH; pH, standard deviation; Potentiometric open-cell titration; Salinity; Site
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
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  • 30
    Publication Date: 2023-03-13
    Keywords: AGE; Color, a*; DRILL; Drilling/drill rig; FH2; Foulden Maar, Otago, New Zealand
    Type: Dataset
    Format: text/tab-separated-values, 5639 data points
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  • 31
    Publication Date: 2023-03-13
    Keywords: AGE; Color RED; DRILL; Drilling/drill rig; FH2; Foulden Maar, Otago, New Zealand; interpolated
    Type: Dataset
    Format: text/tab-separated-values, 9629 data points
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  • 32
    Publication Date: 2023-03-13
    Keywords: DEPTH, sediment/rock; DRILL; Drilling/drill rig; FH2; Foulden Maar, Otago, New Zealand; Inclination
    Type: Dataset
    Format: text/tab-separated-values, 1680 data points
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  • 33
    Publication Date: 2023-03-13
    Keywords: Chlorophyll total; CTD/Rosette; CTD-RO; Dana01/15; Dana01/15_104; Dana01/15_105; Dana01/15_106; Dana01/15_114; Dana01/15_119; Dana01/15_121; Dana01/15_122; Dana01/15_128; Dana01/15_129; Dana01/15_131; Dana01/15_134; Dana01/15_139; Dana01/15_140; Dana01/15_141; Dana01/15_142; Dana01/15_150; Dana01/15_151; Dana01/15_154; Dana01/15_155; Dana01/15_160; Dana01/15_162; Dana01/15_163; Dana01/15_170; Dana01/15_171; Dana01/15_172; Dana01/15_173; Dana01/15_174; Dana01/15_182; Dana01/15_183; Dana01/15_184; Dana01/15_185; Dana01/15_192; Dana01/15_193; Dana01/15_194; Dana01/15_195; Dana01/15_200; Dana01/15_203; Dana01/15_204; Dana01/15_205; Dana01/15_213; Dana01/15_214; Dana01/15_215; Dana01/15_216; Dana01/15_217; Dana01/15_218; Dana01/15_221; Dana01/15_222; Dana01/15_223; Dana01/15_224; Dana01/15_225; Dana II; Date/Time of event; DEPTH, water; Elevation of event; Event label; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Kattegat; Latitude of event; Longitude of event; Nitrate; Nitrite; Nitrogen, total; Oxygen; Phosphate; Phosphorus, total; Pressure, water; Salinity; Silicate; Skagerrak; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2734 data points
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  • 34
    Publication Date: 2023-03-13
    Keywords: CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Latitude of event; Longitude of event; North Sea; Norwegian Sea; Pressure, water; Salinity; Scotia; Scotia15/1; Scotia15/1_1; Scotia15/1_10; Scotia15/1_11; Scotia15/1_12; Scotia15/1_13; Scotia15/1_14; Scotia15/1_15; Scotia15/1_16; Scotia15/1_17; Scotia15/1_18; Scotia15/1_19; Scotia15/1_2; Scotia15/1_20; Scotia15/1_21; Scotia15/1_22; Scotia15/1_23; Scotia15/1_24; Scotia15/1_25; Scotia15/1_26; Scotia15/1_27; Scotia15/1_28; Scotia15/1_29; Scotia15/1_3; Scotia15/1_30; Scotia15/1_31; Scotia15/1_32; Scotia15/1_33; Scotia15/1_34; Scotia15/1_35; Scotia15/1_36; Scotia15/1_37; Scotia15/1_38; Scotia15/1_39; Scotia15/1_4; Scotia15/1_40; Scotia15/1_41; Scotia15/1_42; Scotia15/1_43; Scotia15/1_44; Scotia15/1_45; Scotia15/1_46; Scotia15/1_47; Scotia15/1_48; Scotia15/1_49; Scotia15/1_5; Scotia15/1_6; Scotia15/1_7; Scotia15/1_8; Scotia15/1_9; South Atlantic Ocean; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2865 data points
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  • 35
    Publication Date: 2023-03-13
    Keywords: CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; G. O. Sars (2003); GS15/122; GS15/122_1; GS15/122_10; GS15/122_100; GS15/122_101; GS15/122_102; GS15/122_103; GS15/122_104; GS15/122_105; GS15/122_106; GS15/122_107; GS15/122_108; GS15/122_109; GS15/122_11; GS15/122_110; GS15/122_111; GS15/122_112; GS15/122_113; GS15/122_114; GS15/122_115; GS15/122_116; GS15/122_117; GS15/122_118; GS15/122_119; GS15/122_12; GS15/122_120; GS15/122_121; GS15/122_122; GS15/122_123; GS15/122_124; GS15/122_125; GS15/122_126; GS15/122_127; GS15/122_128; GS15/122_129; GS15/122_13; GS15/122_130; GS15/122_131; GS15/122_132; GS15/122_133; GS15/122_134; GS15/122_135; GS15/122_136; GS15/122_137; GS15/122_138; GS15/122_139; GS15/122_14; GS15/122_140; GS15/122_141; GS15/122_142; GS15/122_143; GS15/122_144; GS15/122_145; GS15/122_15; GS15/122_16; GS15/122_17; GS15/122_18; GS15/122_19; GS15/122_2; GS15/122_20; GS15/122_21; GS15/122_22; GS15/122_23; GS15/122_24; GS15/122_25; GS15/122_26; GS15/122_27; GS15/122_28; GS15/122_29; GS15/122_3; GS15/122_30; GS15/122_31; GS15/122_32; GS15/122_33; GS15/122_34; GS15/122_35; GS15/122_36; GS15/122_37; GS15/122_38; GS15/122_39; GS15/122_4; GS15/122_40; GS15/122_41; GS15/122_42; GS15/122_43; GS15/122_44; GS15/122_45; GS15/122_46; GS15/122_47; GS15/122_48; GS15/122_49; GS15/122_5; GS15/122_50; GS15/122_51; GS15/122_52; GS15/122_53; GS15/122_54; GS15/122_55; GS15/122_56; GS15/122_57; GS15/122_58; GS15/122_59; GS15/122_6; GS15/122_60; GS15/122_61; GS15/122_62; GS15/122_63; GS15/122_64; GS15/122_65; GS15/122_66; GS15/122_67; GS15/122_68; GS15/122_69; GS15/122_7; GS15/122_70; GS15/122_71; GS15/122_72; GS15/122_73; GS15/122_74; GS15/122_75; GS15/122_76; GS15/122_77; GS15/122_78; GS15/122_79; GS15/122_8; GS15/122_80; GS15/122_81; GS15/122_82; GS15/122_83; GS15/122_84; GS15/122_85; GS15/122_86; GS15/122_87; GS15/122_88; GS15/122_89; GS15/122_9; GS15/122_90; GS15/122_91; GS15/122_92; GS15/122_93; GS15/122_94; GS15/122_95; GS15/122_96; GS15/122_97; GS15/122_98; GS15/122_99; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Latitude of event; Longitude of event; North Sea; Norwegian Sea; Pressure, water; Salinity; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 8979 data points
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  • 36
    Publication Date: 2023-03-13
    Keywords: CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; English Channel; Event label; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Latitude of event; Longitude of event; North Sea; Pressure, water; Salinity; Temperature, water; Thalassa; Thalassa15/1; Thalassa15/1_1; Thalassa15/1_10; Thalassa15/1_100; Thalassa15/1_101; Thalassa15/1_102; Thalassa15/1_103; Thalassa15/1_106; Thalassa15/1_107; Thalassa15/1_108; Thalassa15/1_109; Thalassa15/1_11; Thalassa15/1_110; Thalassa15/1_111; Thalassa15/1_112; Thalassa15/1_113; Thalassa15/1_114; Thalassa15/1_115; Thalassa15/1_116; Thalassa15/1_117; Thalassa15/1_118; Thalassa15/1_119; Thalassa15/1_12; Thalassa15/1_120; Thalassa15/1_121; Thalassa15/1_122; Thalassa15/1_123; Thalassa15/1_124; Thalassa15/1_125; Thalassa15/1_126; Thalassa15/1_127; Thalassa15/1_128; Thalassa15/1_129; Thalassa15/1_13; Thalassa15/1_130; Thalassa15/1_131; Thalassa15/1_132; Thalassa15/1_133; Thalassa15/1_134; Thalassa15/1_135; Thalassa15/1_136; Thalassa15/1_137; Thalassa15/1_138; Thalassa15/1_139; Thalassa15/1_140; Thalassa15/1_141; Thalassa15/1_142; Thalassa15/1_143; Thalassa15/1_153; Thalassa15/1_155; Thalassa15/1_156; Thalassa15/1_157; Thalassa15/1_158; Thalassa15/1_159; Thalassa15/1_160; Thalassa15/1_161; Thalassa15/1_162; Thalassa15/1_163; Thalassa15/1_164; Thalassa15/1_165; Thalassa15/1_166; Thalassa15/1_167; Thalassa15/1_169; Thalassa15/1_170; Thalassa15/1_171; Thalassa15/1_172; Thalassa15/1_173; Thalassa15/1_174; Thalassa15/1_175; Thalassa15/1_176; Thalassa15/1_177; Thalassa15/1_178; Thalassa15/1_179; Thalassa15/1_18; Thalassa15/1_180; Thalassa15/1_181; Thalassa15/1_182; Thalassa15/1_183; Thalassa15/1_184; Thalassa15/1_185; Thalassa15/1_186; Thalassa15/1_187; Thalassa15/1_188; Thalassa15/1_189; Thalassa15/1_19; Thalassa15/1_190; Thalassa15/1_191; Thalassa15/1_192; Thalassa15/1_193; Thalassa15/1_194; Thalassa15/1_2; Thalassa15/1_20; Thalassa15/1_21; Thalassa15/1_22; Thalassa15/1_23; Thalassa15/1_24; Thalassa15/1_25; Thalassa15/1_26; Thalassa15/1_27; Thalassa15/1_28; Thalassa15/1_29; Thalassa15/1_3; Thalassa15/1_30; Thalassa15/1_31; Thalassa15/1_32; Thalassa15/1_33; Thalassa15/1_34; Thalassa15/1_35; Thalassa15/1_36; Thalassa15/1_37; Thalassa15/1_38; Thalassa15/1_39; Thalassa15/1_4; Thalassa15/1_40; Thalassa15/1_41; Thalassa15/1_42; Thalassa15/1_43; Thalassa15/1_44; Thalassa15/1_45; Thalassa15/1_46; Thalassa15/1_47; Thalassa15/1_48; Thalassa15/1_49; Thalassa15/1_5; Thalassa15/1_50; Thalassa15/1_51; Thalassa15/1_52; Thalassa15/1_53; Thalassa15/1_54; Thalassa15/1_55; Thalassa15/1_56; Thalassa15/1_57; Thalassa15/1_58; Thalassa15/1_59; Thalassa15/1_6; Thalassa15/1_60; Thalassa15/1_61; Thalassa15/1_62; Thalassa15/1_63; Thalassa15/1_64; Thalassa15/1_65; Thalassa15/1_66; Thalassa15/1_67; Thalassa15/1_68; Thalassa15/1_69; Thalassa15/1_7; Thalassa15/1_70; Thalassa15/1_71; Thalassa15/1_72; Thalassa15/1_73; Thalassa15/1_74; Thalassa15/1_75; Thalassa15/1_76; Thalassa15/1_77; Thalassa15/1_78; Thalassa15/1_79; Thalassa15/1_8; Thalassa15/1_80; Thalassa15/1_81; Thalassa15/1_82; Thalassa15/1_83; Thalassa15/1_84; Thalassa15/1_85; Thalassa15/1_86; Thalassa15/1_87; Thalassa15/1_88; Thalassa15/1_89; Thalassa15/1_9; Thalassa15/1_90; Thalassa15/1_91; Thalassa15/1_92; Thalassa15/1_93; Thalassa15/1_94; Thalassa15/1_95; Thalassa15/1_96; Thalassa15/1_97; Thalassa15/1_98; Thalassa15/1_99
    Type: Dataset
    Format: text/tab-separated-values, 8988 data points
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  • 37
    Publication Date: 2023-03-13
    Keywords: CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Latitude of event; Longitude of event; North Sea; Pressure, water; Salinity; Temperature, water; Tridens; Tridens15/1; Tridens15/1_10; Tridens15/1_11; Tridens15/1_12; Tridens15/1_13; Tridens15/1_14; Tridens15/1_15; Tridens15/1_16; Tridens15/1_17; Tridens15/1_18; Tridens15/1_19; Tridens15/1_2; Tridens15/1_20; Tridens15/1_21; Tridens15/1_22; Tridens15/1_23; Tridens15/1_24; Tridens15/1_25; Tridens15/1_26; Tridens15/1_27; Tridens15/1_28; Tridens15/1_29; Tridens15/1_3; Tridens15/1_30; Tridens15/1_31; Tridens15/1_32; Tridens15/1_33; Tridens15/1_34; Tridens15/1_35; Tridens15/1_36; Tridens15/1_37; Tridens15/1_38; Tridens15/1_39; Tridens15/1_4; Tridens15/1_40; Tridens15/1_41; Tridens15/1_42; Tridens15/1_44; Tridens15/1_45; Tridens15/1_46; Tridens15/1_5; Tridens15/1_7; Tridens15/1_8; Tridens15/1_9
    Type: Dataset
    Format: text/tab-separated-values, 2658 data points
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  • 38
    Publication Date: 2023-03-13
    Keywords: CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; International Young Fish Survey/International Bottom Trawl Survey; IYFS/IBTS; Latitude of event; Longitude of event; North Sea; Norwegian Sea; Oxygen; Pressure, water; Salinity; Temperature, water; Walther Herwig III; WH382; WH382_100; WH382_105; WH382_113; WH382_114; WH382_115; WH382_116; WH382_125; WH382_126; WH382_127; WH382_128; WH382_137; WH382_138; WH382_139; WH382_140; WH382_147; WH382_148; WH382_149; WH382_158; WH382_159; WH382_160; WH382_161; WH382_170; WH382_171; WH382_172; WH382_179; WH382_180; WH382_181; WH382_190; WH382_191; WH382_192; WH382_193; WH382_200; WH382_201; WH382_202; WH382_203; WH382_216; WH382_217; WH382_218; WH382_22; WH382_223; WH382_224; WH382_225; WH382_230; WH382_231; WH382_27; WH382_28; WH382_29; WH382_30; WH382_39; WH382_40; WH382_41; WH382_50; WH382_51; WH382_52; WH382_53; WH382_60; WH382_61; WH382_62; WH382_63; WH382_71; WH382_72; WH382_73; WH382_74; WH382_84; WH382_85; WH382_86; WH382_97; WH382_98; WH382_99
    Type: Dataset
    Format: text/tab-separated-values, 4960 data points
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  • 39
    Publication Date: 2023-03-14
    Keywords: Benthocosm_A1; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 320136 data points
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  • 40
    Publication Date: 2023-03-14
    Keywords: Benthocosm_B2; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 309000 data points
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  • 41
    Publication Date: 2023-03-14
    Keywords: Benthocosm_D2; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 315284 data points
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  • 42
    Publication Date: 2023-03-14
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Cell density; Cell density, standard deviation; Experiment day; Figure; Nitrate; Nitrate, standard deviation; pH; Replicates; Species; Standard deviation; Sulfate; Sulfate, standard deviation; Thiosulfate
    Type: Dataset
    Format: text/tab-separated-values, 425 data points
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  • 43
    Publication Date: 2023-03-14
    Keywords: Benthocosm_B1; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 319735 data points
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  • 44
    Publication Date: 2023-03-14
    Keywords: Benthocosm_C1; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 321026 data points
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  • 45
    Publication Date: 2023-03-14
    Keywords: Benthocosm_C2; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 312493 data points
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  • 46
    Publication Date: 2023-03-14
    Keywords: Benthocosm_A2; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 261286 data points
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  • 47
    Publication Date: 2023-03-14
    Keywords: Benthocosm_D1; DATE/TIME; Event label; Experiment; Experimental treatment; Kiel Fjord; MESO; Mesocosm experiment; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 317138 data points
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  • 48
    Publication Date: 2023-03-14
    Keywords: Aluminium; Arnstein_Forest; Bavaria; Cation exchange capacity; Classification; Comment; Ebrach_Forest; Event label; Field capacity; Identification; Iron; Kaisheim_Forest; Latitude of event; Light Condition; Light condition, openness; Light condition, site factor; Longitude of event; Magnesium; Manganese; Number of years; Percentage; pH; Potassium; Shannon Diversity Index; Sodium; Trees, basal area
    Type: Dataset
    Format: text/tab-separated-values, 960 data points
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  • 49
    Publication Date: 2023-03-14
    Keywords: AB; Ayer_Besar; B; C; Chlorophyll a; DATE/TIME; DEPTH, water; Event label; Gosong_Conkak; Gosong_Panggang; Java Sea; Kayu_Angin_Bira; Latitude of event; Longitude of event; MULT; Multiple investigations; Oxygen; Oxygen saturation; P; Pari_North; Pari_South; pH; PN; PS; R; Rambut; Salinity; Site; Temperature, water; Turbidity (Nephelometric turbidity unit); UJ; Untung_Jawa
    Type: Dataset
    Format: text/tab-separated-values, 1952 data points
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  • 50
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; Ammonium; BIOACID; BIOACID 2 PNG2013; Biological Impacts of Ocean Acidification; Carbon, inorganic, dissolved; DEPTH, water; DIVER; Environment; LATITUDE; Layer description; Location; LONGITUDE; M.V. Chertan; Nitrate and Nitrite; Nitrite; Papua_New_Guinea_CO2_vent; pH; Phosphate; Replicate; Sample code/label; Sample ID; Sampling by diver; Silicate; Site
    Type: Dataset
    Format: text/tab-separated-values, 1615 data points
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  • 51
    Publication Date: 2023-03-14
    Description: This work aimed to explore evaluated the effects of the increased of hydrostatic pressure on a defined bacterial community on aggregates formed from an axenic culture of marine diatoms by simulating sedimentation to the deep sea by increase of hydrostatic pressure up to 30 bar (equivalent to 3000 m water depth) against control at ambient surface pressure. Our hypothesis was that microbial colonization and community composition and thus microbial OM turnover is greatly affected by changes in hydrostatic pressure during sinking to the deep ocean.
    Keywords: Alanine; Amino acid, total hydrolysable; Amino acids; Arginine; Aspartic acid; Aspartic acid/beta-Alanine ratio; beta-Alanine; BIOACID; Biological Impacts of Ocean Acidification; Carbon, inorganic, particulate; Carbon, organic, particulate; Carbon, total; Carbon/Nitrogen ratio; Dauwe index; Experimental treatment; gamma-Aminobutyric acid; Glutamic acid; Glutamic acid/gamma-Aminobutyric acid ratio; Glycine; Histidine; Isoleucine; Leucine; Lysine; Methionine; Nitrogen, total; Ornithine; Particle concentration; pH; Phenylalanine; Ratio; Serine; Sinking velocity; Size; Threonine; Time in hours; Tyrosine; Valine
    Type: Dataset
    Format: text/tab-separated-values, 552 data points
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  • 52
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    Unknown
    PANGAEA
    In:  Water and Sanitation Agency Lahore | Supplement to: Abbas, Zainab; Mapoma, Harold Wilson Tumwitike; Su, Chunli; Aziz, Syed Zahid; Abbas, Naaz (2018): Spatial analysis of groundwater suitability for drinking and irrigation in Lahore, Pakistan. Environmental Monitoring and Assessment, 190(7), https://doi.org/10.1007/s10661-018-6775-3
    Publication Date: 2023-03-14
    Description: The dataset provides detailed information on the study that was conducted in Lahore's 7 major towns. The sample was taken from 472 tubewells and analyzed for major cations and anions using APHA 2012 techniques as explained herein. Besides, E.coli determination was done to check for microbial contamination. The data includes results from PHREEQC modeling of As(III)/ As(V) species and saturation indices as well as Aquachem's computed hydrochemical water facies. The WHO (2011) and EPA standards included in Aquachem identified the parameters that where in violation. Bicarbonates dominated the groundwater types with 50.21% of the samples exceeding the EPA maximum permissible limit of 250 mg/L in drinking water. Similarly, 30.51% of the samples had TDS values greater than 500 mg/L while 85.38 % of the samples exceed 10 µg/L threshold limit value of arsenic. Also, instances of high magnesium hazard values were observed which requires constant assessment if the groundwater is used for irrigation. Higher than 50% MH values are detrimental to crops which may reduce the expected yields. The membrane filtration technique using m-Endo Agar indicated that 3.59% samples had TNC (too numerous to count) values for E.coli while 5.06% showed values higher than 0 cfu/ 100 ml acceptable value in drinking water. Any traces of E-coli in a groundwater sample indicate recent fecal contamination. Such outcomes signify presence of enteric pathogens. If the groundwater is not properly dosed with disinfectants it may cause harm to human health. It is concluded that more studies are needed and proper groundwater management implement to safeguard the lives of communities that depend solely on groundwater in the city.
    Keywords: Acid Base titration; Anhydrite; AquaChem; Aragonite; Area/locality; Argentometric method; Arsenic; Arsenic(III); Arsenic(V); Automated hydrazine reduction method; Bicarbonate ion; Calcite; Calcium; Calculated; Chloride; Comment; Conductivity, electrical; DATE/TIME; Dolomite; EDTA titration method; Escherichia coli in colony forming units; Flame photometry; Fluoride; Fluorite; Geographic name/locality; Gravimetric analysis; Gypsum; Halite; Hand held digital pH meter; Hardness of water; ICP-OES, Inductively coupled plasma - optical emission spectrometry; Lahore_Towns; LATITUDE; LONGITUDE; Magnesium; Magnesium hazard; Membrane filtration technique using m-Endo Agar; Microcomputer based meter (JENCO); Nitrate; Nitrite; Number; Pakistan; pH; PHREEQC modeling; Portable microprocessor turbidity meter (Hanna Instruments); Potassium; Sample code/label; Sodium; Sodium absorption ratio; SPADNS method; Spectrophotometric method (NOVA); Station label; Sulfate; Total dissolved solids; Turbidity (Nephelometric turbidity unit); Type; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 15841 data points
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  • 53
    Publication Date: 2023-03-16
    Keywords: Alpine wind monitor, R.M. Young, model 05108-45; Automatic weather station; AWS; Barometric pressure sensor, R.M. Young, model 61302V; DATE/TIME; HEIGHT above ground; Humidity, relative; Humidity, relative, standard deviation; Humidity-Temperature probe, Vaisala, HMP155A; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Pressure, atmospheric; Pressure, atmospheric, standard deviation; Temperature, air; Temperature, air, standard deviation; Warszawa_Icefield_AWS; Wind direction; Wind direction, standard deviation; Wind speed; Wind speed, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 647320 data points
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  • 54
    Publication Date: 2023-03-16
    Keywords: Alpine wind monitor, R.M. Young, model 05108-45; Automatic weather station; AWS; Barometric pressure sensor, R.M. Young, model 61302V; DATE/TIME; HEIGHT above ground; Humidity, relative; Humidity, relative, standard deviation; Humidity-Temperature probe, Vaisala, HMP155A; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Pressure, atmospheric; Pressure, atmospheric, standard deviation; Temperature, air; Temperature, air, standard deviation; Warszawa_Icefield_AWS; Wind direction; Wind direction, standard deviation; Wind speed; Wind speed, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 741672 data points
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  • 55
    Publication Date: 2023-03-16
    Keywords: Automatic weather station; AWS; DATE/TIME; HEIGHT above ground; Humidity-Temperature probe, Vaisala, HMP155A; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Temperature, air; Warszawa_Icefield_PG19
    Type: Dataset
    Format: text/tab-separated-values, 986 data points
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  • 56
    Publication Date: 2023-03-16
    Keywords: Adiabatic temperature lapse rate, low; Adiabatic temperature lapse rate, up; Alpine wind monitor, R.M. Young, model 05108-45; Automatic weather station; AWS; Calculated; DATE/TIME; HEIGHT above ground; Humidity, relative; Humidity-Temperature probe, Vaisala, HMP155A; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Temperature, air; Temperature, air, standard deviation; Warszawa_Icefield_ZAWS; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 5822 data points
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  • 57
    Publication Date: 2023-03-16
    Keywords: 10001; 1301; 1501; 1701; 1901; 2101; 21-2001,ARKTIEF II,SFB512; 2501; 2701; 2901; 301; 3401; 4001; 4201; 4301; 501; 5601; 5801; 6001; 6201; 6501; 6801; 701; 8501; 8701; 8901; 901; 9101; 9501; 9701; AWI_BioOce; Biological Oceanography @ AWI; Chlorophyll a; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; LA01/9; LA01/9_100; LA01/9_13; LA01/9_15; LA01/9_17; LA01/9_19; LA01/9_21; LA01/9_25; LA01/9_27; LA01/9_29; LA01/9_3; LA01/9_34; LA01/9_40; LA01/9_42; LA01/9_43; LA01/9_5; LA01/9_56; LA01/9_58; LA01/9_60; LA01/9_62; LA01/9_65; LA01/9_68; LA01/9_7; LA01/9_85; LA01/9_87; LA01/9_89; LA01/9_9; LA01/9_91; LA01/9_95; LA01/9_97; Lance; Latitude of event; Longitude of event; North Greenland Sea
    Type: Dataset
    Format: text/tab-separated-values, 161 data points
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  • 58
    Publication Date: 2023-03-16
    Keywords: ARKTIEF; AWI_BioOce; Biological Oceanography @ AWI; Chlorophyll a; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; LA00/105; LA00/111; LA00/112; LA00/113; LA00/114; LA00/115; LA00/116; LA00/117; LA00/118; LA00/119; LA00/120; LA00/121; LA00/123; LA00/124; LA00/125; LA00/126; LA00/127; LA00/128; LA00/129; LA00/130; LA00/131; LA00/132; LA00/134; LA00/136; LA00/138; LA00/153; LA00/158; LA00/9; Lance; Latitude of event; Longitude of event; North Greenland Sea
    Type: Dataset
    Format: text/tab-separated-values, 160 data points
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  • 59
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Calculated; Course; CT; DATE/TIME; HE266/1; HE266/1-track; Heincke; LATITUDE; LONGITUDE; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 574 data points
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  • 60
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Calculated; Course; CT; DATE/TIME; HE292/1; HE292/1-track; Heincke; LATITUDE; LONGITUDE; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 2302 data points
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  • 61
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Calculated; Course; CT; DATE/TIME; HE312/1; HE312/1-track; Heincke; LATITUDE; LONGITUDE; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 1870 data points
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  • 62
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Calculated; Course; CT; DATE/TIME; HE439; HE439-track; Heincke; LATITUDE; LONGITUDE; North Sea; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 5470 data points
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  • 63
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    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: Akademik Boris Petrov; AWI_Paleo; BP00; BP00-14; Kara Sea; MULT; Multiple investigations; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: unknown
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  • 64
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    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: Akademik Boris Petrov; AWI_Paleo; BP01; BP01-40/04; Giant box corer; GKG; Kara Sea; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: unknown
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  • 65
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    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: Akademik Boris Petrov; AWI_Paleo; BP99; BP99-04; MULT; Multiple investigations; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: unknown
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  • 66
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-02; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 67
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-10; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 68
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-37; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 69
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-42; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 70
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-40; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 71
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-18; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 72
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-58; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 73
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-62; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 74
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    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; KAL_R; Kara Sea/St. Anna Trough; Kasten corer RUS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PL-1994; PL94-68; Professor Logachev
    Type: Dataset
    Format: unknown
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  • 75
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2005; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 354 data points
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  • 76
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    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2009; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 516 data points
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  • 77
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2010; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 541 data points
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  • 78
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    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2013; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 551 data points
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  • 79
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    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2011; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 561 data points
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  • 80
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2012; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 480 data points
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  • 81
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Area/locality; Comment; CT; DATE/TIME; Investigator; North Sea; Underway cruise track measurements; UT2014; Uthörn
    Type: Dataset
    Format: text/tab-separated-values, 543 data points
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  • 82
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Brandal; Conductivity/temperature logger µS-Log540, Driesen + Kern GmbH; DATE/TIME; DEPTH, water; Kongsfjorden, Spitsbergen, Arctic; MULT; Multiple investigations; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 52266 data points
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  • 83
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: AWI_Coast; AWI Arctic Land Expedition; Carbon, organic, dissolved; Coastal Ecology @ AWI; Colorometric autoanalysis; DATE/TIME; Depth, bathymetric; DEPTH, water; High temperature catalytic oxidation; LATITUDE; Lena2010; Lena Delta, Siberia, Russia; Location type; LONGITUDE; MULT; Multiple investigations; Nitrate and Nitrite; Nitrogen, total dissolved; Phosphate; RU-Land_2010_Lena; Salinity; Sample code/label; Sample ID; Spectrophotometry; Station label; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 606 data points
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  • 84
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    In:  Supplement to: Falk, Ulrike; Gieseke, Hilke; Kotzur, Franziska; Braun, Matthias Holger (2015): Monitoring snow and ice surfaces on King George Island, Antarctic Peninsula, with high-resolution TerraSAR-X time series. Antarctic Science, 15 pp, https://doi.org/10.1017/S0954102015000577
    Publication Date: 2023-03-16
    Description: Changes of glaciers and snow cover in polar regions affect a wide range of physical and ecosystem processes on land and in the adjacent marine environment. In this study, we investigate the potential of 11-day repeat high-resolution satellite image time series from the TerraSAR-X mission to derive glaciological and hydrological parameters on King George Island, Antarctica during the period Oct/25/2010 to Apr/19/2011. The spatial pattern and temporal evolution of snow cover extent on ice-free areas can be monitored using multi-temporal coherence images. SAR coherence is used to map glacier extent of land terminating glaciers with an average accuracy of 25 m. Multi-temporal SAR color composites identify the position of the late summer snow line at about 220 m above sea level. Glacier surface velocities are obtained from intensity feature-tracking. Surface velocities near the calving front of Fourcade Glacier were up to 1.8 ± 0.01 m/d. Using an intercept theorem based on fundamental geometric principles together with differential GPS field measurements, the ice discharge of Fourcade Glacier was estimated to 20700 ± 5500 m**3/d (corresponding to ~19 ± 5 kt/d). The rapidly changing surface conditions on King George Island and the lack of high-resolution digital elevation models for the region remain restrictions for the applicability of SAR data and the precision of derived products.
    Keywords: File content; File format; File size; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King_George_Island; King George Island, Antarctic Peninsula; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 16 data points
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  • 85
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Keywords: Calculated; Course; CT; DATE/TIME; HE280/1; HE280/1-track; Heincke; LATITUDE; LONGITUDE; North Sea; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 380 data points
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  • 86
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    In:  Supplement to: Falk, Ulrike; López, Damián; Sala, Hernán (in prep.): Tipping point of glacier mass balance changes for the inland ice cap of King George Island, West Antarctica.
    Publication Date: 2023-03-16
    Description: The east coast of the AP is highly influenced by cold and dry air masses stemming from the adjacent Weddell Sea. By the contrary, the west coast jointly with the South Shetland Islands are directly exposed to the humid and relatively warm air masses from the South Pacific Ocean carried by the strong and persistent westerly winds. Systematic glaciological field studies are very scarce on both sides of the AP, among them can be mentioned a mass-balance program performed continuously since summer 1998/99 by the Instituto Antártico Argentino (IAA) on Vega Island, James Ross Archipelago, on the northeastern flank of the AP. Another continuous plurianual glaciological research has been initiated in 2010 jointly by the University of Bonn and the IAA at the Fourcade Glacier on King George Island (KGI) within the framework of the ESF project IMCOAST (FK 03F0617B). Two transects of mass balance stakes were installed from the top of the Warszawa Ice Dome down to the border of the glaciers Fourcade and Polar Club, to serve for calibration and validation of modeling efforts. The stakes were measured at the beginning and end of each summer field campaign in November 2010, February - March 2011, January - March 2012, and especially during the austral winter 2012 up to March 2013 every 10 to 14 days depending on weather conditions. During the austral winter 2013 and until June 2014 the measurements were conducted every 20 to 30 days, weather permitting. Snow density was measured as well in every field trip from June 2012 until June 2104, establishing a rather homogeneous value along the different parts of the glacier. Snow density in late summer, rho_s is usually higher than the one in late winter, rho_w. Seasonal average values were calculated for the area covered by the mass balance stakes, being rho_s= 471 Kg/m**3 and rho_w = 363 Kg/m**3.
    Keywords: Automatic weather station; AWS; Calculated; DATE/TIME; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Length, difference; Melt rate in water equivalent per day; Warszawa_Icefield_AWS
    Type: Dataset
    Format: text/tab-separated-values, 186 data points
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  • 87
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2023-03-16
    Type: Dataset
    Format: application/zip, 8.6 MBytes
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  • 88
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    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven | Supplement to: Driemel, Amelie; Loose, Bernd; Grobe, Hannes; Sieger, Rainer; König-Langlo, Gert (2016): 30 years of upper air soundings on board of R/V POLARSTERN. Earth System Science Data, 8, 213-220, https://doi.org/10.5194/essd-8-213-2016
    Publication Date: 2023-03-16
    Description: The research vessel and supply icebreaker POLARSTERN is the flagship of the Alfred-Wegener-Institut in Bremerhaven (Germany) and one of the infrastructural pillars of German Antarctic research. Since its commissioning in 1982, POLARSTERN has conducted 30 campaigns to Antarctica (157 legs, mostly austral summer), and 29 to the Arctic (94 legs, northern summer). Usually, POLARSTERN is more than 300 days per year in operation and crosses the Atlantic Ocean in a meridional section twice a year. The first radiosonde on POLARSTERN was released on the 29th of December 1982, two days after POLARSTERN started on its maiden voyage to the Antarctic. And these daily soundings have continued up to the present. Due to the fact that POLARSTERN has reliably and regularly been providing upper air observations from data sparse regions (oceans and polar regions), the radiosonde data are of special value for researchers and weather forecast services alike. In the course of 30 years (1982-12-29 to 2012-11-25) a total of 12378 radiosonde balloons were started on POLARSTERN. All radiosonde data can now be found here. Each dataset contains the directly measured parameters air temperature, relative humidity and air pressure, and the derived altitude, wind direction and wind speed. 432 datasets additionally contain ozone measurements.
    Keywords: AWI_Meteo; Campaign; Date/time end; Date/time start; Meteorological Long-Term Observations @ AWI; Method comment; Number of observations; Persistent Identifier; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 1453 data points
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  • 89
    Publication Date: 2023-03-16
    Keywords: Alpine wind monitor, R.M. Young, model 05108-45; Automatic weather station; AWS; Barometric pressure sensor, R.M. Young, model 61302V; DATE/TIME; HEIGHT above ground; Humidity, relative; Humidity, relative, standard deviation; Humidity-Temperature probe, Vaisala, HMP155A; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Pressure, atmospheric; Pressure, atmospheric, standard deviation; Temperature, air; Temperature, air, standard deviation; Warszawa_Icefield_AWS; Wind direction; Wind direction, standard deviation; Wind speed; Wind speed, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 109360 data points
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  • 90
    Publication Date: 2023-03-16
    Keywords: Automatic weather station; AWS; DATE/TIME; DEPTH, ice/snow; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Temperature, ice/snow; Temperature, ice/snow, standard deviation; Thermistor soil temperature probe 107, Campbell Scientific; Warszawa_Icefield_AWS
    Type: Dataset
    Format: text/tab-separated-values, 51064 data points
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  • 91
    Publication Date: 2023-03-16
    Keywords: Automatic weather station; AWS; Battery terminal voltage; Calculated; DATE/TIME; DEPTH, ice/snow; Depth, relative; HEIGHT above ground; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; King George Island, Antarctic Peninsula; Temperature, ice/snow; Thermistor soil temperature probe 107, Campbell Scientific; Warszawa_Icefield_ZAWS
    Type: Dataset
    Format: text/tab-separated-values, 8874 data points
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  • 92
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    In:  Supplement to: Jung, Richard (submitted): Sediment classification on Norderney. Remote Sensing of Environment
    Publication Date: 2023-03-08
    Description: The Wadden Sea is located in the southeastern part of the North Sea forming an extended intertidal area along the Dutch, German and Danish coast. It is a highly dynamic and largely natural ecosystem influenced by climatic changes and anthropogenic use of the North Sea. Changes in the environment of the Wadden Sea, natural or anthropogenic origin, cannot be monitored by the standard measurement methods alone, because large-area surveys of the intertidal flats are often difficult due to tides, tidal channels and unstable underground. For this reason, remote sensing offers effective monitoring tools. In this study a multi-sensor concept for classification of intertidal areas in the Wadden Sea has been developed. Basis for this method is a combined analysis of RapidEye (RE) and TerraSAR-X (TSX) satellite data coupled with ancillary vector data about the distribution of vegetation, mussel beds and sediments. The classification of the vegetation and mussel beds is based on a decision tree and a set of hierarchically structured algorithms which use object and texture features. The sediments are classified by an algorithm which uses thresholds and a majority filter. Further improvements focus on radiometric enhancement and atmospheric correction. First results show that we are able to identify vegetation and mussel beds with the use of multi-sensor remote sensing. The classification of the sediments in the tidal flats is a challenge compared to vegetation and mussel beds. The results demonstrate that the sediments cannot be classified with high accuracy by their spectral properties alone due to their similarity which is predominately caused by their water content.
    Keywords: WIMO; Wissenschaftliche Monitoringkonzepte für die Deutsche Bucht
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 93
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    In:  Supplement to: Overduin, Pier Paul; Liebner, Susanne; Knoblauch, Christian; Günther, Frank; Wetterich, Sebastian; Schirrmeister, Lutz; Hubberten, Hans-Wolfgang; Grigoriev, Mikhail N (2015): Methane oxidation following submarine permafrost degradation: Measurements from a central Laptev Sea shelf borehole. Journal of Geophysical Research: Biogeosciences, 120(5), 965-978, https://doi.org/10.1002/2014JG002862
    Publication Date: 2023-03-07
    Description: Submarine permafrost degradation has been invoked as a cause for recent observations of methane emissions from the seabed to the water column and atmosphere of the East Siberian shelf. Sediment drilled 52 m down from the sea ice in Buor Khaya Bay, central Laptev Sea revealed unfrozen sediment overlying ice-bonded permafrost. Methane concentrations in the overlying unfrozen sediment were low (mean 20 µM) but higher in the underlying ice-bonded submarine permafrost (mean 380 µM). In contrast, sulfate concentrations were substantially higher in the unfrozen sediment (mean 2.5 mM) than in the underlying submarine permafrost (mean 0.1 mM). Using deduced permafrost degradation rates, we calculate potential mean methane efflux from degrading permafrost of 120 mg/m**2 per year at this site. However, a drop of methane concentrations from 190 µM to 19 µM and a concomitant increase of methane d13C from -63 per mil to -35 per mil directly above the ice-bonded permafrost suggest that methane is effectively oxidized within the overlying unfrozen sediment before it reaches the water column. High rates of methane ebullition into the water column observed elsewhere are thus unlikely to have ice-bonded permafrost as their source.
    Keywords: AWI_PerDyn; Permafrost Research (Periglacial Dynamics) @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 94
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    In:  Supplement to: Fritz, Michael; Herzschuh, Ulrike; Wetterich, Sebastian; Lantuit, Hugues; De Pascale, Gregory P; Pollard, Wayne H; Schirrmeister, Lutz (2012): Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada). Quaternary Research, 78(3), 549-560, https://doi.org/10.1016/j.yqres.2012.07.007
    Publication Date: 2023-03-07
    Description: Beringian climate and environmental history are poorly characterized at its easternmost edge. Lake sediments from the northern Yukon Territory have recorded sedimentation, vegetation, summer temperature and precipitation changes since ~16 cal ka BP. Herb-dominated tundra persisted until ~14.7 cal ka BP with mean July air temperatures less than or equal to 5 °C colder and annual precipitation 50 to 120 mm lower than today. Temperatures rapidly increased during the Bølling/Allerød interstadial towards modern conditions, favoring establishment of Betula-Salix shrub tundra. Pollen-inferred temperature reconstructions recorded a pronounced Younger Dryas stadial in east Beringia with a temperature drop of ~1.5 °C (~2.5 to 3.0 °C below modern conditions) and low net precipitation (90 to 170 mm) but show little evidence of an early Holocene thermal maximum in the pollen record. Sustained low net precipitation and increased evaporation during early Holocene warming suggest a moisture-limited spread of vegetation and an obscured summer temperature maximum. Northern Yukon Holocene moisture availability increased in response to a retreating Laurentide Ice Sheet, postglacial sea level rise, and decreasing summer insolation that in turn led to establishment of Alnus-Betula shrub tundra from ~5 cal ka BP until present, and conversion of a continental climate into a coastal-maritime climate near the Beaufort Sea.
    Keywords: AWI_PerDyn; Permafrost Research (Periglacial Dynamics) @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 95
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    In:  Supplement to: Boike, Julia; Grau, Thomas; Heim, Birgit; Günther, Frank; Langer, Moritz; Muster, Sina; Gouttevin, Isabelle; Lange, Stephan (2016): Satellite-derived changes in the permafrost landscape of central Yakutia, 2000–2011: Wetting, drying, and fires. Global and Planetary Change, 139, 116-127, https://doi.org/10.1016/j.gloplacha.2016.01.001
    Publication Date: 2023-03-07
    Description: The focus of this research has been on detecting changes in lake areas, vegetation, land surface temperatures, and the area covered by snow, using data from remote sensing. The study area covers the main (central) part of the Lena River catchment in the Yakutia region of Siberia (Russia), extending from east of Yakutsk to the central Siberian Plateau, and from the southern Lena River to north of the Vilyui River. Approximately 90% of the area is underlain by continuous permafrost. Remote sensing products were used to analyze changes in water bodies, land surface temperature (LST), and leaf area index (LAI), as well as the occurrence and extent of forest fires, and the area and duration of snow cover. The remote sensing analyses (for LST, snow cover, LAI, and fire) were based on MODIS-derived NASA products (250-1000 m) for 2000 to 2011. Changes in water bodies were calculated from two mosaics of (USGS) Landsat (30 m) satellite images from 2002 and 2009. Within the study area's 315,000 km**2 the total area covered by lakes increased by 17.9% between 2002 and 2009, but this increase varied in different parts of the study area, ranging between 11% and 42%. The land surface temperatures showed a consistent warming trend, with an average increase of about 0.12 °C/year. The average rate of warming during the April-May transition period was 0.17 °C/year and 0.19 °C/year in the September-October period, but ranged up to 0.49 °C/year during September-October. Regional differences in the rates of land surface temperature change, and possible reasons for the temperature changes, are discussed with respect to changes in the land cover. Our analysis of a broad spectrum of variables over the study area suggests that the spring warming trend is very likely to be due to changes in the area covered by snow. The warming trend observed in fall does not, however, appear to be directly related to any changes in the area of snow cover, or to the atmospheric conditions, or to the proportion of the land surface that is covered by water (i.e., to wetting and drying).
    Keywords: AWI_PerDyn; Permafrost Research (Periglacial Dynamics) @ AWI
    Type: Dataset
    Format: application/zip, 9 datasets
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  • 96
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    PANGAEA
    In:  Supplement to: Niemeyer, Bastian; Klemm, Juliane; Pestryakova, Luidmila A; Herzschuh, Ulrike (2015): Relative pollen productivity estimates for common taxa of the northern Siberian Arctic. Review of Palaeobotany and Palynology, 221, 71-82, https://doi.org/10.1016/j.revpalbo.2015.06.008
    Publication Date: 2023-03-07
    Description: Pollen productivity estimates (PPE) are used to quantitatively reconstruct variations in vegetation within a specific distance of the sampled pollen archive. Here, for the first time, PPEs from Siberia are presented. The study area (Khatanga region, Krasnoyarsk territory, Russia) is located in the Siberian Sub-arctic where Larixis the sole forest-line forming tree taxon. Pollen spectra from two different sedimentary environments, namely terrestrial mosses (n=16) and lakes (n=15, median radius ~100 m) and their surrounding vegetation were investigated to extract PPEs. Our results indicate some differences in pollen spectra between moss and lake pollen. Larix and Cyperaceae for example obtained higher representation in the lacustrine than in terrestrial moss samples. This highlights that in calibration studies modern and fossil dataset should be of similar sedimentary origin. The results of the Extended R-Value model were applied to assess the relevant source area of pollen (RSAP) and to calculate the PPEs for both datasets. As expected, the RSAP of the moss samples was very small (about 10 m) compared to the lacustrine samples (about 25 km). Calculation of PPEs for the six most common taxa yielded generally similar results for both datasets. Relative to Poaceae (reference taxon, PPE=1) Betula nana-type (PPEmoss: 1.8, PPElake: 1.8) and Alnusfruticosa-type (PPEmoss: 6.4, PPElake: 2.9) were overrepresented while Cyperaceae (PPEmoss: 0.5, PPElake: 0.1), Ericaceae (PPEmoss: 0.3, PPElake 〈0.01), Salix (PPEmoss: 0.03, PPElake 〈0.01) and Larix (PPEmoss 〈0.01, PPElake: 0.2) were under-represented in the pollen spectra compared to the vegetation in the RSAP. The estimation for the dominant tree in the region, Larixgmelinii, is the first published result for this species, but need to be considered very preliminary. The inferred sequence from over- to under-representation is mostly consistent with results from Europe; however, still the absolute values show some differences. Gathering vegetation data was limited by flowering season and low resolute satellite imagery and accessibility of the remote location of our study area. Therefore, our estimate may serve as first reference to strengthen future vegetation reconstructions in this climate-sensitive region.
    Keywords: AWI_PerDyn; Permafrost Research (Periglacial Dynamics) @ AWI
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 97
    Publication Date: 2023-03-07
    Description: This vector data layer covers 6 major lake districts (Baldwin Peninsula, Kobuk Delta, Selawik Lowland, Northern Seward Peninsula, Central Seward Peninsula, and Yukon-Kuskokwim Delta) in the northern and central sub-regions of the Western Alaska Landscape Conservation Cooperative (WALCC) region and consists of polygons of lakes with areas equal or greater than 1.0 ha. More than 58000 Lakes were mapped from Landsat TM and ETM+ imagery acquired between 1972 and 1975, 2002 and 2009, and 2013 and 2014 using Object-Based Image Analysis (OBIA) techniques with an classification accuracy of 96%. The spatial image resolution of Landsat TM and ETM+ is 30 m. Permafrost characteristics and surficial geology associated with lake polygons were determined from the Alaska permafrost map (Jorgenson et al. 2008).
    Keywords: Alaska, USA; AWI_PerDyn; LSAT; Permafrost Research (Periglacial Dynamics) @ AWI; Remote sensing (Landsat); Western-Alaska-LCC
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 98
    Publication Date: 2023-03-07
    Keywords: 11-CH-17A; Age; Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated material; Age, dated standard deviation; Age, standard deviation; AWI_PerDyn; AWI Arctic Land Expedition; Calculated; Chatanga2011; DEPTH, sediment/rock; GCUWI; Gravity corer, UWITEC; Permafrost Research (Periglacial Dynamics) @ AWI; RU-Land_2011_Khatanga; Sample, optional label/labor no; Taymyr peninsula, northern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 36 data points
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  • 99
    Publication Date: 2023-03-07
    Keywords: Alaska, USA; AWI_PerDyn; LSAT; Permafrost Research (Periglacial Dynamics) @ AWI; Remote sensing (Landsat); Western-Alaska-LCC
    Type: Dataset
    Format: application/zip, 18.2 MBytes
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  • 100
    Publication Date: 2023-03-07
    Keywords: 11-CH-moss10I; 11-CH-moss16I; 11-CH-moss17I; 11-CH-moss17II; 11-CH-moss2I; 11-CH-moss2II; 11-CH-moss6I; 11-CH-moss6II; 11-CH-moss6III; 11-CH-moss6IV; 13-TY-moss4K1; 13-TY-moss4K2; 13-TY-moss7K1; 13-TY-moss7K2; 13-TY-moss9K1; 13-TY-moss9K2; AWI_PerDyn; AWI Arctic Land Expedition; Calculated; Chatanga2011; Counting, palynology; Event label; Khatanga region, Russia; LAKE; LAND; Latitude of event; Longitude of event; Permafrost Research (Periglacial Dynamics) @ AWI; Pollen productivity estimate; Ring sector, in; Ring sector, out; RU-Land_2011_Khatanga; Sample ID; Sampling/measurement on land; Sampling lake
    Type: Dataset
    Format: text/tab-separated-values, 2410 data points
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