ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Weitere Quellen  (172)
  • 550  (68)
  • 910  (52)
  • 551.6  (51)
  • GMIT  (50)
  • 2020-2022  (172)
  • 1
    facet.materialart.
    Unbekannt
    Beiträge zur Geomathematik (2021)
    Reimer, Berlin
    In:  SUB Göttingen | ZB 45198:15
    Details
    Publikationsdatum: 2021-12-21
    Beschreibung: Zur Lösung erdwissenschaftlicher Fragestellungen werden seit etwa einem Jahrzehnt in zunehmendem Umfang mathematische Methoden herangezogen. Eine der Ursachen für diese Entwicklung besteht darin, dass moderne technische Geräte, wie sie auch in den Erdwissenschaften eingesetzt werden, immer größere Datenmengen produzieren, die nach einer rationellen Verarbeitung verlangen. Es ist daher nicht verwunderlich, dass die Mathematische Geologie in Zusammenhang mit der Entwicklung von Groß-Rechenanlagen stark an Bedeutung gewonnen hat. […]
    Beschreibung: The use of mathematics in solving geoscientific problems has increased steadily within the last decade. The modernisation of the technical equipment available to geoscientists has resulted in ever-growing amounts of data which then must be analysed. Therefore, it is no wonder that the development of mathematical geology and computers are closely related.[...]
    Beschreibung: BURGER, H. : Digitale Blldverarbeitung - Ein wichtiges Hilfsmittel in der geologischen Fernerkundung (5) BÜRSTENBINDER, J. : Einige Ergebnisse eines Methodenvergleichs bei der Berechnung von Erzkörpern (21) LINDENBERG, H.G. & MENSINK, H. : Multivariate Gruppierungsmethoden in phylogenetisch orientierter Paläontologie (am Beispiel von Gastropoden aus dem Stelnhelmer Becken) (30) PENA, J.L. SURFACE II, ein graphisches Computer-System (52) PRISSANG, R. Die Anwendung einer Methode gleitender gewichteter Mittelwerte auf die Vorratsberechnung einer Gangerzlagerstätte (59) SCHOELE, R. : Geostat1st1k - Ein System von Rechenprogrammen zur Theorie der ortsabhängigen Variablen (67) SCHUMANN, Th. : Methoden der Sozialraumanalyse (80) SCHWIETZER, C.-A. : Klassifizierung von Ostracodenschalen mit Hilfe von Fourier-Koeffizienten (88) SHULMAN, M. The geologic applicability of some constitutive equations (94) SKALA, W. : Einige Eigenschaften geschlossener Prozentsysteme (101) WALLBRECHER, E. : Vektorstatistische Methoden zur Ermittlung von Regelungsgraden und zur Beschreibung von Verteilungsformen tektonischer Daten (110)
    Beschreibung: research
    Beschreibung: DFG, SUB Göttingen
    Schlagwort(e): 550 ; Mathematische und Statistische Geologie ; FID-GEO-DE-7
    Sprache: Deutsch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 2
    facet.materialart.
    Unbekannt
    Geowissenschaftliche Mitteilungen - GMIT 86 (2021)
    ARGE GMIT, Bonn
    Details
    Publikationsdatum: 2021-12-20
    Beschreibung: Die Ausgabe der Geowissenschaftlichen Mitteilungen vom September 2021 enthält die Themenblöcke: GEOfokus: (Die Antarktisforschung der BGR), GEOaktiv (Wirtschaft, Beruf, Forschung und Lehre), GEOlobby (Gesellschaften, Verbände, Institutionen), GEOreport (Geowissenschaftliche Öffentlichkeitsarbeit, Tagungsberichte, Ausstellungen, Exkursionen, Publikationen), GEOszene (Würdigungen, Nachrufe).
    Beschreibung: DFG, SUB Göttingen
    Beschreibung: journal
    Schlagwort(e): 550 ; Wissenschaftsorganisation und -pflege {Geologische Wissenschaften} ; GMIT ; Geowissenschaftliche Mitteilungen ; FID-GEO-DE-7
    Sprache: Deutsch
    Materialart: map , publishedVersion
    Format: 140
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 3
    facet.materialart.
    Unbekannt
    Wolfgang Beyer: A Groundwater Scientist from Dresden (2021)
    Details
    Publikationsdatum: 2021-12-07
    Beschreibung: Wolfgang Beyer was a groundwater scientist in Dresden, whose work on the permeability of sediments is cited the world over, but who is otherwise little known. This article is to commemorate him on the occasion of his 90th birthday.
    Schlagwort(e): 550 ; Wolfgang Bayer ; groundwater scientist ; commemorative paper
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 4
    facet.materialart.
    Unbekannt
    “Surface,” “satellite” or “simulation”: Mapping intra-urban microclimate variability in a desert city (2021)
    Details
    Publikationsdatum: 2021-11-01
    Beschreibung: Mapping spatial and temporal variability of urban microclimate is pivotal for an accurate estimation of the ever-increasing exposure of urbanized humanity to global warming. This particularly concerns cities in arid/semi-arid regions which cover two fifths of the global land area and are home to more than one third of the world's population. Focusing on the desert city of Be'er Sheva Israel, we investigate the spatial and temporal patterns of urban–rural and intra-urban temperature variability by means of satellite observation, vehicular traverse measurement, and computer simulation. Our study reveals a well-developed nocturnal canopy layer urban heat island in Be'er Sheva, particularly in the winter, but a weak diurnal cool island in the mid-morning. Near surface air temperature exhibits weak urban–rural and intra-urban differences during the daytime (〈1°C), despite pronounced urban surface cool islands observed in satellite images. This phenomenon, also recorded in some other desert cities, is explained by the rapid increase in surface skin temperature of exposed desert soils (in the absence of vegetation or moisture) after sunrise, while urban surfaces are heated more slowly. The study highlights differences among the three methods used for describing urban temperature variability, each of which may have different applications in fields such as urban planning, climate change mitigation, and epidemiological research.
    Schlagwort(e): 551.6 ; Israel ; desert city ; urban microclimate ; mapping methods
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 5
    facet.materialart.
    Unbekannt
    A seismic monitoring approach to detect and quantify river sediment mobilization by steelhead redd-building activity (2021)
    Details
    Publikationsdatum: 2021-10-28
    Beschreibung: The role of spawning salmonids in altering river bed morphology and sediment transport is significant, yet poorly understood. This is due, in large part, to limitations in monitoring the redd-building process in a continuous and spatially extended way. A complementary approach may be provided through the use of a small seismic sensor network analysing the ground motion signals generated by the agitation of sediment during the redd-building process. We successfully tested the viability of this approach by detecting and locating artificially generated redd signals in a reach of the Mashel River, Washington State, USA. We then utilize records of 17 seismic stations, in which we automatically detected seismic events that were subsequently manually checked, yielding a catalogue of 45 potential redd-building events. Such redd-building events typically lasted between 1 and 20 min and consisted of a series of clusters of 50–100 short energetic pulses in the 20–60 Hz frequency range. The majority (〉90%) of these redd-building events occurred within 11 days, predominantly during the early morning and late afternoon. The seismically derived locations of the signals were in agreement with independently mapped redds. Improved network geometry and installation conditions are required for more efficient detection, robust location and improved energetic insights into redd-building processes in larger reaches. The passive and continuous nature of the seismic approach in detecting redds and describing fish behaviour provides a novel tool for fish biologists and fisheries managers, but also for fluvial geomorphologists, interested in quantifying the amount of sediment mobilized by this ecosystem engineer. When complemented with classic approaches, it could allow for a more holistic picture of the kinetics and temporal patterns (at scales from seconds to multiple seasons) of a key phase of salmonid life cycles. © 2020 The Authors. Earth Surface Processes and Landforms published by John Wiley & Sons Ltd
    Schlagwort(e): 550 ; environmental seismology ; ecosystem engineers ; salmonid spawning ; gravel-bed rivers ; biogeomorphology
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 6
    facet.materialart.
    Unbekannt
    Potential for Early Forecast of Moroccan Wheat Yields Based on Climatic Drivers (2021)
    Details
    Publikationsdatum: 2021-10-27
    Beschreibung: Wheat production plays an important role in Morocco. Current wheat forecast systems use weather and vegetation data during the crop growing phase, thus limiting the earliest possible release date to early spring. However, Morocco's wheat production is mostly rainfed and thus strongly tied to fluctuations in rainfall, which in turn depend on slowly evolving climate dynamics. This offers a source of predictability at longer time scales. Using physically guided causal discovery algorithms, we extract climate precursors for wheat yield variability from gridded fields of geopotential height and sea surface temperatures which show potential for accurate yield forecasts already in December, with around 50% explained variance in an out-of-sample cross validation. The detected interactions are physically meaningful and consistent with documented ocean-atmosphere feedbacks. Reliable yield forecasts at such long lead times could provide farmers and policy makers with necessary information for early action and strategic adaptation measurements to support food security.
    Schlagwort(e): 551.6 ; causal discovery algorithms ; teleconnections ; seasonal forecast ; machine learning ; wheat forecast ; climate precursors
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 7
    facet.materialart.
    Unbekannt
    Estimating near-surface air temperature across Israel using a machine learning based hybrid approach (2021)
    Details
    Publikationsdatum: 2021-10-27
    Beschreibung: Rising global temperatures over the last decades have increased heat exposure among populations worldwide. An accurate estimate of the resulting impacts on human health demands temporally explicit and spatially resolved monitoring of near-surface air temperature (Ta). Neither ground-based nor satellite-borne observations can achieve this individually, but the combination of the two provides synergistic opportunities. In this study, we propose a two-stage machine learning-based hybrid model to estimate 1 × 1 km2 gridded intra-daily Ta from surface skin temperature (Ts) across the complex terrain of Israel during 2004–2016. We first applied a random forest (RF) regression model to impute missing Ts from the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua and Terra satellites, integrating Ts from the geostationary Spinning Enhanced Visible and InfraRed Imager (SEVIRI) satellite and synoptic variables from European Centre for Medium-Range Weather Forecasts' (ECMWF) ERA5 reanalysis data sets. The imputed Ts are in turn fed into the Stage 2 RF-based model to estimate Ta at the satellite overpass hours of each day. We evaluated the model's performance applying out-of-sample fivefold cross validation. Both stages of the hybrid model perform very well with out-of-sample fivefold cross validated R2 of 0.99 and 0.96, MAE of 0.42°C and 1.12°C, and RMSE of 0.65°C and 1.58°C (Stage 1: imputation of Ts, and Stage 2: estimation of Ta from Ts, respectively). The newly proposed model provides excellent computationally efficient estimation of near-surface air temperature at high resolution in both space and time, which helps further minimize exposure misclassification in epidemiological studies.
    Schlagwort(e): 551.6 ; air temperature ; health 〈 6. application/context ; health exposure ; MODIS ; random forest ; remote sensing 〈 1. tools and methods ; statistical methods 〈 1. tools and methods ; surface skin temperature
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 8
    facet.materialart.
    Unbekannt
    Broad Consistency Between Observed and Simulated Trends in Sea Surface Temperature Patterns (2021)
    Details
    Publikationsdatum: 2021-10-27
    Beschreibung: Using seven single-model ensembles and the two multimodel ensembles CMIP5 and CMIP6, we show that observed and simulated trends in sea surface temperature (SST) patterns are globally consistent when accounting for internal variability. Some individual ensemble members simulate trends in large-scale SST patterns that closely resemble the observed ones. Observed regional trends that lie at the outer edge of the models' internal variability range allow two nonexclusive interpretations: (a) Observed trends are unusual realizations of the Earth's possible behavior and/or (b) the models are systematically biased but large internal variability leads to some good matches with the observations. The existing range of multidecadal SST trends is influenced more strongly by large internal variability than by differences in the model formulation or the observational data sets.
    Schlagwort(e): 551.6 ; sea surface temperature patterns ; internal variability ; global climate models ; large ensembles ; model evaluation
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 9
    facet.materialart.
    Unbekannt
    Impact Forecasting to Support Emergency Management of Natural Hazards (2021)
    Details
    Publikationsdatum: 2021-10-27
    Beschreibung: Forecasting and early warning systems are important investments to protect lives, properties, and livelihood. While early warning systems are frequently used to predict the magnitude, location, and timing of potentially damaging events, these systems rarely provide impact estimates, such as the expected amount and distribution of physical damage, human consequences, disruption of services, or financial loss. Complementing early warning systems with impact forecasts has a twofold advantage: It would provide decision makers with richer information to take informed decisions about emergency measures and focus the attention of different disciplines on a common target. This would allow capitalizing on synergies between different disciplines and boosting the development of multihazard early warning systems. This review discusses the state of the art in impact forecasting for a wide range of natural hazards. We outline the added value of impact-based warnings compared to hazard forecasting for the emergency phase, indicate challenges and pitfalls, and synthesize the review results across hazard types most relevant for Europe.
    Schlagwort(e): 550 ; impact forecasting ; natural hazards ; early warning
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
  • 10
    facet.materialart.
    Unbekannt
    Interannual to millennial-scale variability of River Ammer floods and its relationship with solar forcing (2021)
    Details
    Publikationsdatum: 2021-10-26
    Beschreibung: The relationship between River Ammer flood frequency variability, extreme summer climate over Europe, and solar forcing is investigated. First, we used observational data to evaluate extreme weather and climate anomaly patterns associated with flood and solar forcing as well as the possible dynamical mechanisms behind them. Then, the annual resolution flood layer record from the Lake Ammer sediments is analysed to evaluate millennial-scale variability of floods and possible related extreme climate patterns back to 5,500 years BP. A composite analysis reveals that observed River Ammer flood frequency variability at interannual to multidecadal time scales is connected to large-scale extreme precipitation and temperature patterns. From a synoptic-scale perspective, the extreme precipitation pattern associated with floods is related to an increase in the frequency of high upper-level potential vorticity (PV) events over western Europe and a decrease over eastern Europe and western Russia. Increased (decreased) frequency of upper-level high PV events is related to more (less) surface extreme precipitation occurrence. Furthermore, we show that increased frequency of upper-level high PV events over western Europe is associated with enhanced blocking activity over eastern Europe. Therefore, the out of phase interannual to millennial-scale variations of River Ammer flood frequency and solar irradiance, as presented in previous studies, can be explained by a solar modulation of eastern European-western Russia summer blocking and associated upstream upper-level wave breaking activity. In addition, we identify two distinct quasi-periodic signals in both frequency of Lake Ammer flood layer and solar irradiance records with periods of ~900 years and ~2,300 years. We argue that similar cycles should dominate millennial-scale variations of blocking activity in eastern Europe-western Russia as well as extreme precipitation and flood frequency variability over central and western Europe during the last ~5,500 years.
    Schlagwort(e): 551.6 ; floods ; extreme precipitation ; potential vorticity ; solar forcing
    Sprache: Englisch
    Materialart: map
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    CITATION GEO-LEO
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...