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  • 1
    Publication Date: 2021-03-29
    Description: Der Konferenzbeitrag gibt einen Einblick in das Forschungsdatenmanagement in den Geowissenschaften und spannt den Bogen vom Geowissenschaftlichen Zentrum in Göttingen über nationale bis zu internationalen Strukturen und Herangehensweisen.
    Description: Der Konferenzbeitrag gibt einen Einblick in das Forschungsdatenmanagement in den Geowissenschaften und nennt Bedarf, Herangehensweisen und Entwicklungspotentiale sowie Infrastrukturlösungen und Projekte. Der Bandbreite reicht vom Geowissenschaftlichen Zentrum der Universität Göttingen über nationale bis zu internationalen Forschungsstrukturen.
    Description: conference
    Keywords: 551 ; Geowissenschaften, Forschungsdatenmanagement
    Language: German
    Type: conferencePaper
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  • 2
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    Verlag von Gebrüder Borntraeger, Berlin
    In:  SUB Göttingen | 4 MIN II, 91
    Publication Date: 2021-03-29
    Description: Es wird hier der Versuch gemacht, die wesentlichen neuen Erfahrungen über den Bau und Entstehung der Alpen zusammenzufassen. Im Laufe von 12 Sommern habe ich Gelegenheit gehabt, die Alpen vom Simplon bis in die Karpathen, bis in die Dinariden Bosniens kennen zu lernen und habe in den verschiedenen Zonen der Ostalpen und Dinariden lange Zeit gearbeitet. So ist mir kein wichtiger Bestandteil der Alpen vom Simplon bis an die ungarische Ebene unbekannt. Darum glaube ich auch an die schwierige Aufgabe einer Synthese der Alpen auf Grund der modernen Erfahrungen schreiten zu können und hoffe damit einen Beitrag zur Aufklärung des Deckenhaues der Alpen zu liefern, der allen denen willkommen sein dürfte, die sich einen Einblick, eine Übersicht über den Stand der heutigen Kenntnis verschaffen wollen.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551 ; Alpidische Orogene {Tektonik} ; Alpensystem {Geologie} ; Alpen ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 283
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  • 3
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    Verlag von Gebrüder Borntraeger, Berlin
    In:  SUB Göttingen | 4 MIN II, 92
    Publication Date: 2021-03-29
    Description: Zweck des vorliegenden kleinen Werkes ist es, auf Grundlage des heute vorhandenen Tatsachenmaterials, die alpine Faltung nach Raum und Zeit zu gliedern.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551 ; Alpidische Orogene {Tektonik} ; Tektogenese {Geodynamik} ; Alpensystem {Geologie} ; Faltung ; Alpen ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
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  • 4
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    E. Schweizerbart'sche Verlagsbuchhandlung (Erwin Nägele), Stuttgart
    In:  SUB Göttingen | 8 MIN II, 4734
    Publication Date: 2021-03-29
    Description: Dieses Buch soll keine fertige Ansicht, sondern die Grundlagen liefern, um sich eine solche zu bilden. Neben der Schilderung der Deckenlehre steht hier daher die Zusammenfassung der Kritik und die Darstellung der Methoden im Vordergrund des Interesses. Und wenn es dem Verfasser gelungen sein sollte, das zu liefern, ein möglichst objektives Bild vom gegenwärtigen Stand der Deckenlehre zu entwerfen und dadurch das Interesse an diesem wichtigen Kapitel der Geologie zu fördern, so ist der Zweck dieses Buches erreicht.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551.8 ; 554.3 ; 551 ; Alpidische Orogene {Tektonik} ; Tektonik ; Geologie ; Alpen ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 149
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  • 5
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    Selbstverlag der Bundesanstalt für Landeskunde
    In:  SUB Göttingen | 8 Z GEOGR 53:87
    Publication Date: 2021-03-29
    Description: In dieser Arbeit wird der Fragestellung nachgegangen, ob die zahlreichen Karnischen des Nordschwarzwalds echte Kare sind und die Schneegrenze hier besonders tief gelegen hat oder die Schneegrenze wie im übrigen Deutschland über 900 m hoch lag und es sich dann kaum um echte Kare handelt. Der Autor untersuchte dazu Kare und Quelltrichter besonders im badischen Teil des Nordschwarzwalds, weil dort die Kare meist nicht auf den geologischen Karten verzeichnet sind. Reisen in den Südschwarzwald, in die Vogesen und in den Bayrischen Wald dienten dem Vergleich. Im Verlauf der weiteren Untersuchungen stieß er auf zahlreiche Wirkungen des Eiszeitklimas. Vor allem interessierte ihn der Gehängeschutt, da über ihn bis dahin fast gar nichts bekannt war.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: 910 ; 551 ; VAR 400 ; VAR 800 ; VAR 910 ; VEB 143 ; Glazialmorphologie ; Periglazialerscheinungen ; Europa {Glazialgeologie} ; Oberrheinische Massen {Geologie} ; Nordschwarzwald ; Glaziallandschaft ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 86
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  • 6
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    Kaufmann, Leipzig
    In:  SUB Göttingen | 8 HLL III, 1234/c
    Publication Date: 2021-03-29
    Description: Die vorliegende Literaturzusammenstellung schließt an die im Jahre 1874 erschienene Zusammenstellung der "Geologischen und mineralogischen Literatur des Königreichs Sachsen und der angrenzenden Ländertheile von 1835 bis 1873" von ALFRED JENTZSCH an. Aus verschiedenen praktischen Gründen wurde die Literatur nochmals von 1870 ab berücksichtigt. Andererseits liegt diejenige des Jahres 1921 bis heute noch nicht mit wünschenswerter Vollständigkeit vor und wurde deshalb weggelassen, selbst diejenige des Jahres 1920 dürfte noch Lücken aufweisen.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 554.3 ; 551 ; Sachsen {Geologie} ; Geologie ; Sachsen ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 232
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  • 7
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    Amt für Bodenforschung, Hannover
    In:  SUB Göttingen | 8 U 60.7041
    Publication Date: 2021-03-29
    Description: Im südöstlichen Niederbayern wurden das Positionsblatt Simbach a. Inn und angrenzende Teile der umliegenden Positionsblätter kartiert. Neben pleistozänen und holozänen Bildungen erfasst die Kartierung jüngste Schichten der Oberen Meeresmolasse, die Süßbrackwassermolasse und Schichtglieder der Oberen Süßwassermolasse. Das Tertiärprofil reicht vom mittleren Helvet bis zum tiefsten Pont. 〈br〉 Tektonische Bewegungen nachhelvetischen Alters sind einwandfrei festzustellen; sie führen entgegen älteren Anschauungen nicht zu Verbiegungen oder sogar zu Verfaltungen der Schichten, sondern zu Bruchbildung und Aufteilung des Gebietes in Kleinschollen. Aufschlüsse mit Anzeichen lokaler Zerrungstektonik sind nicht nur im engeren Kartierungsgebiet, sondern auch im ganzen Raum zwischen Inn und Vils mehrfach anzutreffen. Für die Entstehung der Zerrungsformen können pseudotektonische Ursachen größtenteils ausgeschlossen werden. 〈br〉 Die in der Kleintektonik auftretenden Richtungen stimmen im Wesentlichen mit den Streichrichtungen größerer Strukturelemente überein. Zerrungsformen treten im bearbeiteten Gebiet nicht nur in der Kleintektonik auf, sondern sind nach neueren Arbeiten auch aus der Großtektonik bekanntgeworden. Damit kann zumindest das Gebiet zwischen Inn und Vils als ein Raum reiner tektonischer Zerrung gelten, soweit man sich auf die hier erfassten, posthelvetischen Bewegungen bezieht. Diese jungen Bewegungen verteilen sich auf jüngstes Miozän und auf Pliozän.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: 551 ; Alpenvorland {Geologie} ; Molasse ; Simbach am Inn ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 69
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  • 8
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    Wittwer, Stuttgart
    In:  SUB Göttingen | 4 MIN II, 5393/m
    Publication Date: 2021-03-29
    Description: In der geologischen Kritik der bestehenden Erdsynthesen nehmen die Probleme des Zusammenhanges von Horizontal- und Vertikal-Tektonik einen breiten Raum ein…〈br〉 Das „Für“ und „Wider“ der Wegenersche Verschiebungstheorie konnte naturgemäß keine Lösung im Sinne einer weitgehenden Übereinstimmung erbringen. Aber es sind doch den von A. Wegener angenommenen, riesenhaften Horizontalverfrachtungen ernste Hindernisse in den Weg gestellt worden. Dies kommt in der wenig später erschienenen Arbeit von H. Cloos , „Hebung -Spaltung - Vulkanismus“, besonders deutlich zum Ausdruck…〈br〉 Da die Spaltenbildung auch in der Gegenwart andauert, wird die geodätische Feinmessung einen wesentlichen Beitrag zur Lösung der offenstehenden Probleme liefern können. Denn selbst wenn ein noch so träges Auseinanderfließen der jungvulkanischen Innenzone in Betracht zu ziehen wäre, muss das Verhalten der beiderseitigen tertiären, starren Basaltmassive den Prüfstein für die vermuteten waagerechten Verschiebungen abgeben. In diesem Zusammenhang interessiert aber auch die Beschaffenheit des Untergrundes. Je nachdem, ob die Innenzone als breiter und tiefer Graben, oder als Zerrungszone mit plastischem Untergrund aufzufassen ist, bestehen zwei Möglichkeiten: starke und sehr tief reichende Vertikalbewegungen ohne messtechnisch erfassbare waagerechte Verschiebungen, oder fühlbare Horizontalwanderungen mit schwachen Auswirkungen in der Vertikalkomponente als Folge geringerer Tiefenwirkung. Es liegt daher nahe, durch Schweremessungen über den Aufbau des Untergrundes Anhaltspunkte zu gewinnen. Insbesondere erhebt sich die Frage, ob und inwieweit mit Hilfe der geophysikalischen Messung größere Unterschiede in den Schwerestrukturen der rezenten Innenzone und der angrenzenden Massive feststellbar sind. 〈br〉 Diese Gesichtspunkte sind es im Wesentlichen, denen die Arbeitsgemeinschaft der wissenschaftlichen Island-Expedition des Jahres 1938 ihren Zusammenschluss verdankte. Es ist wohl auch das erste Mal, dass ein jungvulkanisches Gebiet mit einem geodätisch—geophysikalischen Versuchsfeld überdeckt wurde, ferner, dass die Zusammenarbeit geologischer, geodätischer und geophysikalischer Wissenschaftler sozusagen in einem Guss gesichert und durch rasche Entschlüsse gefördert werden konnte.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551 ; 551 ; VAE 000 ; TSD 500 ; VED 500 ; Tektonik {Geologie} ; Island {Geophysik} ; Island {Geologie} ; Spalten ; Island ; Verschiebungstheorie ; FID-GEO-DE-7
    Language: German
    Type: anthology_digi
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  • 9
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    Kaufmann, Leipzig [u.a.]
    In:  Fakultät Geowissenschaften/Universität Göttingen | Serie
    Publication Date: 2021-03-29
    Description: Bei den geologischen Arbeiten des Verfassers über die obere Kreide zwischen der Elbe bei Schandau und dem Jeschken wurde auch das sächsische Elbsandsteingebirge in den Kreis der Betrachtungen gezogen. Die Durcharbeitung brachte einige neue wichtige Ergebnisse für die Kreidestratigraphie des Elbtales, die hier behandelt werden: Das Turon des sächsischen Elbtales schließt sich in Bezug auf Mächtigkeit und Führung wichtiger Leitfossilien an das des Harzrandes, Nordwestdeutschlands, Böhmens und Schlesiens an. Ebenso lassen sich auch in der englischen und französischen Kreide dieselben wichtigen Fossilien zur vergleichsweise Horizontierung benützen.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 554.3 ; 551.77 ; 551 ; Oberkreide ; Sachsen {Geologie} ; Dresdner Elbtal ; Turonium ; Stratigraphie ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 41
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  • 10
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    Akademie-Verlag, Berlin
    In:  SUB Göttingen | 8 NAT 1887
    Publication Date: 2021-03-29
    Description: Als vertiefende Fortführung des von H. STILLES 25 Jahre zuvor geschriebenen Werks „Grundfragen der vergleichenden Tektonik“ werden die Ergebnisse wohlbegründeter Einzelanalysen von Gebirgen oder besser von deren baugeschichtlicher Entwicklung miteinander in verständliche Beziehung zu gebracht. 0rogene Entwicklungsstadien werden für die Einzelgebirge herausgearbeitet. Da aus solchen Entwicklungsstadien sehr verschiedenen Alters die Kontinente zusammengewachsen sind, werden dazu auch die allgemeinen Strukturtypen der Festländer daraufhin untersucht, wie sie sich fort— und umbildeten, welche verschiedenen Stadien oder „Altersstufen ihres Lebens“ sie in ungeheueren Zeitspannen durchmessen haben. Weil aus dem Stoff der Ozeanuntergründe die Geosynklinalen hinabbauend Orogene schaffen und den Kontinenten anschmieden, bieten auch die Ozeanfluren einst und jetzt wichtige Hinweise auf Keimanlagen dar. Es wird eine Ontogenie der Erdrindenstrukturen angestrebt.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551.8 ; 551 ; Orogene als festländische Erdkrustentypen {Tektonik} ; Erdkruste {Geophysik} ; Orogenese ; Geologie ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 587
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  • 11
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    Reimer, Berlin
    In:  SUB Göttingen | 64 A 3198
    Publication Date: 2021-03-29
    Description: Das vorliegende Werk ist das Ergebnis einer mehr als sechsmonatigen bodenkundlichen Erkundungsreise durch fast alle zugänglichen Teile von Südwestafrika (SWA) und analytischer Auswertung der mitgebrachten Bodenproben. Das vorliegende kleine Werk soll über die örtlichen Belange SWA's hinaus Erkenntnisse über Bodenbildung, Bodeneigenschaften und die Möglichkeiten der Bodennutzung auch in anderen ariden Gebieten mit ähnlichen Böden wie in SWA vermitteln. Nur durch ein gründliches Verständnis der Bodenbildung und Bodennutzung aus der besonderen geographischen Situation SWA's und anderer Trockengebiete heraus können schwere Schäden in der Bodennutzung und Bodenkultur vermieden werden. Ein eingehendes Studium des Wesens der betreffenden Böden verhindert, auch Illusionen über Intensivierung der Bodennutzung für SWA und andere Trockengebiete, etwa durch uferlose Bewässerungsprojekte, wie sie in populären Darstellungen und Presseartikeln ohne jede Kenntnis der notwendigen naturwissenschaftlichen Grundlagen propagiert und vielfach ohne Rücksicht auf die verheerenden Folgen in vielen Ländern auch in der Tat umgesetzt worden sind. Mit der Darstellung der Genetik, Beschreibung und Analytik der Hauptböden in SWA soll zum Vergleich mit Böden in Mitteleuropa angeregt werden und damit auch zum Verständnis der besonderen Eigenart der Böden eines Trockengebietes.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551 ; Südliches Afrika {Bodenkunde} ; Klimatische Geomorphologie ; Bodenkunde ; Namibia ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 168
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  • 12
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    Schulz, Freiburg im Breisgau
    In:  SUB Göttingen | 8 Z GEN 177:26
    Publication Date: 2021-03-29
    Description: Zwischen dem Bau eines Gebirgslandes und seiner Morphogenese, d. h. der Entwicklung seiner Reliefeigentümlichkeiten, seines Formenstils, bestehen enge Beziehungen. Man kann keine morphologische Forschung betreiben, ohne den Gebirgsbau seines Arbeitsgebietes zu kennen. Bei den Untersuchungen auf der Insel Kreta, die 925/26 begonnen und 1956/57 weitergeführt wurden und die - nach der Problemseite hin - letztlich morphogenetischen Zielen gelten, war es mehr, als es in einem geologisch besser bekannten Gebiet nötig gewesen wäre, erforderlich, auch den geologischen Bau der Insel selbst zu untersuchen. Das gleichzeitige Angehen stratigraphischer bzw. tektonischer und morphogenetischer Fragen hat sich sogar nach beiden Richtungen hin als vorteilhaft erwiesen. Selbst die Erkenntnis des tektonischen Baues kann durch die Verwertung des morphologischen Beobaditungsbefundes wesentlich gefördert werden. Über einen Teil der Ergebnisse berichtet diese erweiterte Form eines in der Jahressitzung der Wissenschafilidıen Gesellschaft Freiburg am 6. Dezember 1957 gehaltenen Vortrages.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 551 ; Griechenland und griechische Inseln {Geologie} ; Gebirge ; Geologie ; Kreta ; FID-GEO-DE-7
    Language: German
    Type: monograph_digi
    Format: 47
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  • 13
    Publication Date: 2021-03-29
    Description: Das Natürlich Geschlossene System (NGS) ist die Abstraktion der Geologie auf ein mathematisches Objekt, das ein lineares Kontinuum der Geologie vollständig durch zwei geometrische Relationen und die arithmetische Relation beschreibt.
    Description: research
    Keywords: 551 ; NGS mathematisches Objekt ; NGS, mathematisches Objekt,Geologie, geometrische Relation, arithmetische Relation, Proportionalität, proportional
    Language: German
    Type: article_first
    Format: 4
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  • 14
    Publication Date: 2021-03-29
    Description: Die Relativierung des mathematischen Begriffs der direkten Proportionalität führt in der Geologie zur Darstellung der geometrischen und der arithmetischen Relation und zur Begründung des geologischen Binärsystems. Die mathematischen Sonderfälle des geologischen Binärsystems stellen das Wesen räumlicher Zusammenhänge in der Geologie dar. Die Anwendung der linearen Regression verifiziert die theoretischen Erkenntnisse durch die Berechnung faktischer Daten im geologischen Bau der Altmark.
    Description: research
    Keywords: 551 ; Mathematische und statitische Geologie ; Proportionalität ; proportional, geologisches Binärsystem ; arithmetische Relation ; geometrische Relation
    Language: German
    Type: article_first
    Format: 4
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  • 15
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    In:  SUB Göttingen | 4 MIN II, 1918:187
    Publication Date: 2021-03-29
    Description: Die vorliegende Arbeit bildet einen Teil einer größeren Gemeinschaftsarbeit über die Entwicklung der nordalpinen Saumtiefe. Aus vielen neuen Erkenntnissen jüngerer Lokalstudien wird nach den grundlegenden Arbeiten von GÜMBEL und WEITHOFER einmal wieder eine Synthese gewagt, um die vielen Einzeltatsachen zu einem geschlossenen Bild von dem epirogenen und orogenen Werdegang der bayerischen Molasse zu vereinen. Das Literaturstudium ergab bald, daß eigene Geländeuntersuchungen nötig waren, um manche Widersprüche zu klären und die eine oder andere Lücke zu schließen.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 554.3 ; 551 ; Alpenvorland {Geologie} ; Tertiär ; Känozoikum ; Flöz ; Sediment ; Erdkruste ; FID-GEO-DE-7
    Language: German
    Type: anthologyArticle_digi
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  • 16
    Publication Date: 2021-08-06
    Description: Energy poverty is high up on national and European Union policy agendas. A number of possible indicators to measure the issue have been identified in the literature, but comparable data with European coverage is scarce. The EU Commission thus proposes four independent indicators on the "EU Energy Poverty Observatory" based on self-reported items from the pan-European surveys on income and living conditions (SILC) and household budgets (HBS). It is of increasing public interest to analyse social impacts of energy policies, and quantify energy poverty indicators also from modelling. This paper first shortly outlines how the expenditure-based indicators using HBS micro data may be directly linked to existing macroeconomic models through their defining variables (energy expenditure and income). As endogenous modelling based on micro data is difficult, the link may be country-specific elasticities. The main contribution of the paper is a systematic in-depth sensitivity analysis of the two indicators to changes in income and energy expenditure following varying patterns in the underlying distributions of the micro data. The results may be used by future soft links to models. The results display sometimes counterintuitive effects. We find that whether these indicators increase/decrease after a change of income or energy expenditure largely depends on the specific country-wise income and energy expenditure distribution between households on a micro-level. Due to their definition, the examined indicators are especially sensitive, when income changes alter the indicator threshold values, which in these cases are the median values in underlying distributions. We discuss these findings and relate them to several indicator shortcomings and potential remedies through changes in indicator definition.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: article , doc-type:article
    Format: application/pdf
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
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  • 17
    Publication Date: 2021-08-06
    Description: In order to calculate the financial return of energy efficiency measures, a cost-benefit analysis (CBA) is a proven tool for investors. Generally, however, most CBAs for investors have a narrow focus, which is - simply speaking - on investment costs compared with energy cost savings over the life span of the investment. This only provides part of the full picture. Ideally, a comprehensive or extended CBA would take additional benefits as well as additional costs into account. The objective of this paper is to reflect upon integrating into a CBA two important cost components: transaction costs and energy efficiency services - and how they interact. Even though this concept has not been carried out to the knowledge of the authors, we even go a step further to try to apply this idea. In so doing, we carried out a meta-analysis on relevant literature and existing data and interviewed a limited number of energy experts with comprehensive experience in carrying out energy services. Even though data is hardly available, we succeeded in constructing three real-world cases and applied an extended CBA making use of information gathered on transaction costs and energy services costs. We were able to show that, despite these additional cost components, the energy efficiency measures are economically viable. Quantitative data was not available on how energy services reduce transaction costs; more information on this aspect could render our results even more positive. Even though empirical and conceptual research must intensify efforts to design an even more comprehensive CBA, these first-of-its-kind findings can counterargue those that believe energy efficiency is not worth it (in monetary terms) due to transaction costs or energy services costs. In fact, this is good news for energy efficiency and for those that seek to make use of our findings to argue in favor of taking up energy efficiency investments in businesses.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: article , doc-type:article
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  • 18
    Publication Date: 2021-02-10
    Description: Als Herausforderung der Verkehrswende werden häufig die möglicherweise wegfallenden Arbeitsplätze diskutiert. Denn die Beschäftigung der Automobilindustrie in Deutschland gilt als wichtiges Argument für einen sozialverträglichen Strukturwandel. Aber auch die Wirtschaftszweige des Umweltverbunds bieten viele Arbeitsplätze. Vor diesem Hintergrund untersucht die vorliegende Studie des Wuppertal Instituts und des Instituts Arbeit und Technik der Westfälischen Hochschule die Beschäftigtenzahlen in Teilmärkten der Fahrradwirtschaft sowie deren Umsatzentwicklung.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: report , doc-type:report
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  • 19
    Publication Date: 2021-05-04
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: contributiontoperiodical , doc-type:contributionToPeriodical
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  • 20
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    Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Publication Date: 2021-05-18
    Description: The European Union (EU) has established that the goal of achieving climate neutrality by 2050 as a key driver of innovation and growth for industry and the economy in the EU. In addition to offering great opportunities, this also poses considerable challenges for the European economy and, for the most part, for basic industries, which are particularly emission-intensive and face strong international competition. An integrated climate and industry strategy is of central importance to protecting the climate, since the production of steel, cement, basic chemicals, glass, paper, and other materials in the EU and worldwide accounts for roughly one fifth of total greenhouse gas emissions. Even in a greenhouse gas-neutral future, we will not be able to fully eliminate our need for these materials. At the same time, it is particularly challenging to produce these materials without creating emissions given the state of technology and the necessary infrastructures. This applies above all to the question of how large amounts of green energy, including electricity and hydrogen, can be produced at competitive prices. Analyses show that despite the considerable costs involved in process changeover, the costs of transforming the raw materials industry are acceptable to society as a whole, given that the additional costs usually only increase the price of the end products by a few percentage points. However, in the case of crude steel or cement, the price would increase by between one third and 100 per cent. Since almost all raw materials manufacturers face strong global market competition, in most cases they are not able to bankroll the investments in climate-neutral production and the required energy infrastructure without outside support. This paper outlines an integrated climate industrial policy package that allows the EU to utilise its existing technological leadership in many of these industries to build a greenhouse gas-neutral raw materials industry.
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    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
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  • 21
    Publication Date: 2021-05-06
    Description: In the light of Germany's chosen path towards the energy transition, the regulatory framework has changed considerably. New players have succeeded in entering the market, and renewable energies have become increasingly competitive. Greater electrification of the transport and heating sectors will be needed in the future to achieve national climate targets. Against this background, Germany's big energy companies need to be sure that their sales will increase. However, they were unable to anticipate this development, and made strategic mistakes in the past. The development of sustainable business models in line with the energy transition failed to materialize. Now it is becoming increasingly clear that companies must create new business models to survive in the long term. These business models have to keep with the tradition, whilst meeting the needs of low-carbon power supplies. In this paper, we will examine the past and future challenges of the four energy companies and develop a proposal for evaluating sustainable business models. For this purpose, we use the multi-level perspective to categorize developments in the electricity market over the last 50 years, and then apply a multi-criteria analysis to derive five suitable business models from the results.
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  • 22
    Publication Date: 2021-05-04
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  • 23
    Publication Date: 2021-05-04
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  • 24
    Publication Date: 2020-10-28
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  • 25
    Publication Date: 2021-05-04
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  • 26
    Publication Date: 2021-05-04
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  • 27
    Publication Date: 2021-07-05
    Description: This chapter turns to the measurement of performance in delivering corporate and ecosystem purposes. The metrics are designed to capture the pain points in the ecosystem that need to be addressed and the success of the intervention in addressing them. This requires measures of non-financial as well as financial performance. The chapter provides an overview of measurements of non-financial forms of capital: natural, human, and social. In examining natural capital, it contrasts input measures that record the amount of natural resources that are used in the production process and output measures that examine the impact of the inputs on products, emissions, waste, etc. It notes that measuring inputs is in general more straightforward than outputs and it therefore argues that natural capital metrics should be constructed around inputs rather than outputs.
    Keywords: ddc:330
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  • 28
    Publication Date: 2021-05-18
    Description: In this paper, we aim to present a comprehensive analysis on the emerging phenomenon of distributed innovation in commons-based peer production (CBPP) platforms. Starting with the exploration of the widely held belief on value-creation confined to industrial settings, we raise several questions regarding the feasibility of, and a need for, an inclusive innovation process that can tap grassroots capacity into both traditional (industrial research and development) and emerging (peer-to-peer) innovation models to yield sustainable solutions. In particular, we explore the emergence and structuration of digital innovations in the maker movement, as it presents an alternative construct of innovation wherein access to and sharing of knowledge is predominantly distributed. With innovation outcomes often freely revealed, its very structuration could pose a principal challenge to our conceptualizations of value creation and competitive advantage in the current economic model. Drawing from responses received from 200 collaborative innovation platforms, six semi‐structured interviews focusing on socio-technical innovation cases, as well as four in-depth narrative interviews with maker turned entrepreneurs, we present a detailed analysis on the topology of network, typology of actors, as well as the underlying innovation ecosystem in CBPP networks in Germany. In doing so, we contribute to the conceptualization of peer-to-peer distributed innovations in collaborative platforms.
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  • 29
    Publication Date: 2021-05-21
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  • 30
    Publication Date: 2021-05-18
    Description: Unser Papier entwickelt Maßnahmen für eine "Just transition"-Governance als Grundlage einer Politischen Ökonomie im Strukturwandel. Für eine Fallstudie im Rheinischen Braunkohlerevier wurden sechs Experteninterviews mit Bürgerinitiativen, Gewerkschaften und Vertretern des Landes Nordrhein-Westfalen durchgeführt. Die Ergebnisse zeigen den Bedarf an politischen Maßnahmen in verschiedenen Bereichen auf: Während für die Traditionsfirmen der Braunkohleindustrie und deren Beschäftigten eine Vielzahl von Förderpolitiken entwickelt wurde und wird, erhalten Beschäftigte von Subunternehmen kaum Unterstützung im Strukturwandel. Letztere sind daher einem hohen Risiko ausgesetzt, durch den Ausstieg aus der Kohleförderung ihren Arbeitsplatz zu verlieren. Die Interviews zeigten auch, dass im Rheinischen Braunkohlerevier aufgrund des geltenden Bergbaugesetzes Flächen zu einer knappen Ressource werden könnten. Der Akteurszentrierte Institutionalismus wird genutzt, um Maßnahmen abzuleiten, die den Bedürfnissen der verschiedenen Interessengruppen entsprechen. Abschließend werden Bezüge sowohl zum Transition Management als auch zur Politischen Ökonomie hergestellt.
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  • 31
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    Publication Date: 2021-05-04
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  • 32
    Publication Date: 2021-05-04
    Keywords: ddc:330
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  • 33
    Publication Date: 2021-05-04
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  • 34
    Publication Date: 2021-07-05
    Description: The data centre industry (DCI) has grown from zero in the 1980s, to enabling 60% of the global population to be connected in 2021 via 7.2 million data centres. The DCI is based on a linear economy and there is an urgent need to transform to a Circular Economy to establish a secure supply chain and ensure an economically stable and uninterrupted service, which is particularly difficult in an industry that is comprised of ten insular subsectors. This paper describes the CEDaCI project which was established to address the challenge in this unique sector; this ground-breaking project employs a whole systems approach, Design Thinking and the Double Diamond methods, which rely on people/stakeholder engagement throughout. The paper reviews and assesses the impact of these methods and project to date, using quantitative and qualitative research, via an online sectoral survey and interviews with nine data centre and IT industry experts. The results show that the project is creating positive impact and initiating change across the sector and that the innovative output (designs, business models, and a digital tool) will ensure that sectoral transformation continues; the project methods and structure will also serve as an exemplar for other sectors.
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  • 35
    Publication Date: 2021-11-03
    Description: Stable organic carbon and nitrogen isotopes can be used to interpret past vegetation patterns and ecosystem qualities. Here we present these proxies for two loess-palaeosol sequences from the southern Carpathian Basin to reconstruct the palaeoenvironment during the past 350 ka and establish regional commonalities and differences. Until now, isotopic studies on loess sequences from this region were only conducted on deposits from the last glacial cycle. We conducted methodological tests concerning the complete decalcification of the samples prior to stable isotope analyses. Two decalcification methods (fumigation method and wet chemical acidification), different treatment times, and the reproducibility of carbon isotope analyses were tested. Obtained results indicate that the choice of the decalcification method is essential for organic carbon stable isotope analyses of loess-palaeosol sequences because ratios vary by more than 10‰ between the wet chemical and fumigation methods, due to incomplete carbonate removal by the latter. Therefore, we suggest avoiding the fumigation method for studies on loess-palaeosol sequences. In addition, our data show that samples with TOC content 〈0.2% bear increased potential for misinterpretation of their carbon isotope ratios. For our sites, C3-vegetation is predominant and no palaeoenvironmental shifts leading to a change of the dominant photosynthesis pathway can be detected during the Middle to Late Pleistocene. Furthermore, the potential for further stable nitrogen isotope studies is highlighted, since this proxy seems to reflect especially past precipitation patterns and reveals favourable conditions in the southern Carpathian Basin, especially during interstadials.
    Keywords: 551 ; southern Carpathian Basin ; loess-palaeosol sequences ; stable isotope analyses ; Pleistocene ecosystem reconstruction
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  • 36
    Publication Date: 2021-11-03
    Description: In Antarctic and Subantarctic environments, 14C-based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C-free) carbon in ice marginal settings. In this study, we evaluate possible benefits and challenges of compound-specific radiocarbon analysis (CSRA) as a tool for age determination of marine Antarctic and Subantarctic sediment sequences. We present a comprehensive data set of 14C ages obtained on bulk organic carbon, carbonates, and on fatty acids (FA) from three coastal marine sediment cores from Subantarctic South Georgia and East Antarctica. Low molecular weight (LMW) FA represent the least 14C-depleted fraction, indicating that the phytoplankton-derived compounds can be a means of dating sediments. In contrast, vascular plant-derived high molecular weight FA are systematically depleted in 14C relative to the low molecular weight homologues, reflecting processes such as soil formation/erosion in the catchment. Comparative age-depth models show significant differences, depending on the material used for the respective models. While the land plant-derived FA may lead to an overestimation of the actual sediment age, LMW FA reveal complex aquatic reservoir effects. Bulk sedimentary organic carbon 14C ages likely provide appropriate age estimates in settings with low petrogenic carbon input in the Antarctic, whereas CSRA has the potential to produce improved age control in settings with high contributions of petrogenic carbon.
    Keywords: 551 ; Antarctica ; marine sediments ; compound‐specific radiocarbon analysis (CSRA)
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  • 37
    Publication Date: 2021-10-28
    Description: It is widely assumed that the ventilation of the Southern Ocean played a crucial role in driving glacial-interglacial atmospheric CO2 levels. So far, however, ventilation records from the Indian sector of the Southern Ocean are widely missing. Here we present reconstructions of water residence times (depicted as ΔΔ14C and Δδ13C) for the last 32,000 years on sediment records from the Kerguelen Plateau and the Conrad Rise (~570- to 2,500-m water depth), along with simulated changes in ocean stratification from a transient climate model experiment. Our data indicate that Circumpolar Deep Waters in the Indian Ocean were part of the glacial carbon pool. At our sites, close to or bathed by upwelling deep waters, we find two pulses of decreasing ΔΔ14C and δ13C values (~21–17 ka; ~15–12 ka). Both transient pulses precede a similar pattern in downstream intermediate waters in the tropical Indian Ocean as well as rising atmospheric CO2 values. These findings suggest that 14C-depleted, CO2-rich Circumpolar Deep Water from the Indian Ocean contributed to the rise in atmospheric CO2 during Heinrich Stadial 1 and also the Younger Dryas and that the southern Indian Ocean acted as a gateway for sequestered carbon to the atmosphere and tropical intermediate waters.
    Keywords: 551 ; radiocarbon ; ventilation ; Southern Ocean ; Younger Dryas ; carbon cycle ; Indian Ocean
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  • 38
    Publication Date: 2021-10-28
    Description: There is a converging body of evidence supporting a measurable slowdown of the Atlantic Meridional Overturning Circulation (AMOC) as climate warms and Northern Hemisphere ice sheets inexorably shrink. Within this context, we assess the variability of the AMOC during the Holocene based on a marine sediment core retrieved from the deep northwest Atlantic, which sensitively recorded large-scale deglacial transitions in deep water circulation. While there is a diffuse notion of Holocene variability in Labrador and Nordic Seas overturning, we report a largely invariable deep water circulation for the last ~11,000 years, even during the meltwater pulse associated with the 8.2-ka event. Sensitivity tests along with high-resolution 231Pa/230Th data constrain the duration and the magnitude of possible Holocene AMOC variations. The generally constant baseline during the Holocene suggests attenuated natural variability of the large-scale AMOC on submillennial timescales and calls for compensating effects involving the upstream components of North Atlantic Deep Water.
    Keywords: 551 ; AMOC ; Holocene ; high resolution 231Pa/230Th ; Bermuda Rise ; sensitivity tests
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  • 39
    Publication Date: 2021-10-29
    Description: Tunnel valleys are major features of glaciated margins and they enable meltwater expulsion from underneath a thick ice cover. Their formation is related to the erosion of subglacial sediments by overpressured meltwater and direct glacial erosion. Yet, the impact of pre-existing structures on their formation and morphology remains poorly known. High-quality 3D seismic data allowed the mapping of a large tunnel valley that eroded underlying preglacial delta deposits in the southern North Sea. The valley follows the N–S strike of crestal faults related to a Zechstein salt wall. A change in downstream tunnel valley orientation towards the SE accompanies a change in the strike direction of salt-induced faults. Fault offsets indicate important activity of crestal faults during the deposition of preglacial deltaic sediments. We propose that crestal faults facilitated tunnel valley erosion by acting as high-permeability pathways and allowing subglacial meltwater to reach low-permeability sediments in the underlying Neogene deltaic sequences, ultimately resulting in meltwater overpressure build-up and tunnel valley excavation. Active faults probably also weakened the near-surface sediment to allow a more efficient erosion of the glacial substrate. This control of substrate structures on tunnel valley morphology is considered as a primary factor in subglacial drainage pattern development in the study area.
    Keywords: 551 ; southern North Sea ; Quarternary ; tunnel valley formation ; salt-induced faults
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  • 40
    Publication Date: 2021-10-29
    Description: The timing and mechanisms of the Cretaceous sea incursions into Central Asia are still poorly constrained. We provide a new chronostratigraphic framework based on biostratigraphy and magnetostratigraphy together with detailed paleoenvironmental analyses of Cretaceous records of the proto-Paratethys Sea fluctuations in the Tajik and Tarim basins. The Early Cretaceous marine incursion in the western Tajik Basin was followed by major marine incursions during the Cenomanian (ca. 100 Ma) and Santonian (ca. 86 Ma) that reached far into the eastern Tajik and Tarim basins. These marine incursions were separated by a Turonian-Coniacian (ca. 92–86 Ma) regression. Basin-wide tectonic subsidence analyses imply that the Early Cretaceous sea incursion into the Tajik Basin was related to increased Pamir tectonism. We find that thrusting along the northern edge of the Pamir at ca. 130–90 Ma resulted in increased subsidence in a retro-arc basin setting. This tectonic event and coeval eustatic highstand resulted in the maximum observed geographic extent of the sea during the Cenomanian (ca. 100 Ma). The following Turonian-Coniacian (ca. 92–86 Ma) major regression, driven by eustasy, coincides with a sharp slowdown in tectonic subsidence during the late orogenic unloading period with limited thrusting. The Santonian (ca. 86 Ma) major sea incursion was likely controlled by eustasy as evidenced by the coeval fluctuations in the west Siberian Basin. An early Maastrichtian cooling (ca. 71–70 Ma), potentially connected to global Late Cretaceous trends, is inferred from the replacement of mollusk-rich limestones by bryozoan- and echinoderm-rich limestones.
    Keywords: 551 ; Tajik Basin ; Tarim Basin ; Cretaceous sea incursions ; tectonic subsidence ; proto‐Paratethys Sea
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  • 41
    Publication Date: 2021-10-29
    Description: Columnar jointed lava is an important facies in many geothermal reservoir systems. The permeability of jointed lavas is dominated by the contribution from fracture networks. We use a scaling for the permeability of a set of fractures in a solid or porous mass and extend this to arrays of hexagonal intercolumn fractures. To validate our analytical results, we create numerical domains with relevant geometries and extract system-scale permeability using the LBflow lattice-Boltzmann fluid flow simulation tool. Finally, we model the cooling contraction of columns to extend our results so that they predict the permeability with time after lava emplacement. Importantly, we use these results to estimate the range of permeabilities typical of columnar joints that form during cooling from high temperature and are preserved in the crust at moderate to low temperatures.
    Keywords: 551 ; fractured lavas ; permeability ; prediction
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  • 42
    Publication Date: 2021-09-27
    Description: Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island, Canadian Beaufort Sea) and adjacent marine sediments (Herschel Basin) to understand the fate of organic carbon in Arctic nearshore environments. We use an end-member model based on the carbon isotopic composition of bulk organic matter to identify sources of organic carbon. Monte Carlo simulations are applied to quantify the contribution of coastal permafrost erosion to the sedimentary carbon budget. The models suggest that ~40% of all carbon released by local coastal permafrost erosion is efficiently trapped and sequestered in the nearshore zone. This highlights the importance of sedimentary traps in environments such as basins, lagoons, troughs, and canyons for the carbon sequestration in previously poorly investigated, nearshore areas.
    Keywords: 551 ; permafrost ; coastal erosion ; biomarker ; radiocarbon ; carbon flux ; carbon burial
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  • 43
    Publication Date: 2021-10-07
    Description: The transition from the Pliocene to the Pleistocene was accompanied by major tectonic reorganizations of key oceanic gateways. In particular, the gradual closure of the Panama Gateway and the constriction of the Indonesian Gateway significantly affected the structure of the Pacific thermocline. In the East Pacific, the thermocline shoaled from an early Pliocene El Niño-like depth to its modern state, which had significant implications for global climate. Here we use Mg/Ca temperature estimates from subsurface and thermocline dwelling foraminifera to reconstruct the meridional Plio-Pleistocene evolution of the Southeast Pacific thermocline, in relation to atmospheric circulation changes. In combination with similar reconstructions from the north-equatorial Pacific, our data indicate a change in the thermocline, responding to the northward displacement of the Intertropical Convergence Zone/South Pacific High system between ~3.8 and 3.5 Ma. After 3.5 Ma, we record a second major phase of thermocline shoaling, which points to the Intertropical Convergence Zone/South Pacific High-system movement toward its modern position along with the gradual cooling of the Northern Hemisphere and its associated glaciation. These findings highlight that a warming globe may affect equatorial regions more intensively due to the potential temperature-driven movement of the Intertropical Convergence Zone/South Pacific High and their associated oceanic systems.
    Keywords: 551 ; ITCZ ; South Pacific High ; Plio-Pleistocene ; El Niño ; thermocline
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  • 44
    Publication Date: 2021-10-07
    Description: The brittle-ductile transition is a domain of finite extent characterized by high differential stress where both brittle and ductile deformation are likely to occur. Understanding its depth location, extent, and stability through time is of relevance for diverse applications including subduction dynamics, mantle-surface interactions, and, more recently, proper targeting of high-enthalpy unconventional geothermal resources, where local thermal conditions may activate ductile creep at shallower depths than expected. In this contribution, we describe a thermodynamically consistent physical framework and its numerical implementation, therefore extending the formulation of the companion paper Jacquey and Cacace (2020, https://doi.org/10.1029/2019JB018474) to model thermo-hydro-mechanical coupled processes responsible for the occurrence of transitional semi-brittle, semi-ductile behavior in porous rocks. We make use of a damage rheology to account for the macroscopic effects of microstructural processes leading to brittle-like material weakening and of a rate-dependent plastic model to account for ductile material behavior. Our formulation additionally considers the role of porosity and its evolution during loading in controlling the volumetric mechanical response of a stressed rock. By means of dedicated applications, we discuss how our damage poro-visco-elasto-viscoplastic rheology can effectively reconcile the style of localized deformation under different confining pressure conditions as well as the bulk macroscopic material response as recorded by laboratory experiments under full triaxial conditions.
    Keywords: 551 ; lithosphere ; brittle-ductile transition ; modeling
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  • 45
    Publication Date: 2021-10-07
    Description: This paper presents evidence for a limnological response to the Laacher See eruption (LSE) as detected in lake sediments from Nahe, northern Germany. The sediment section of the Allerød period dating to between 13 422 and 12 708 cal. a BP is preserved in annual laminations. Within this section, the LSE was identified as a cryptotephra layer (12 944±44 cal. a BP). Microfacies analysis, continuous high-resolution geochemical measurements and pollen analyses enabled a high-resolution reconstruction of environmental change. The older part of the Allerød (c. 13 422 to 12 943 cal. a BP) was characterized by relatively stable sedimentation conditions. Evidence for windier conditions dating to c. 13 160 to 13 080 cal. a BP probably reflects the Gerzensee oscillation. Pronounced changes of the lake sedimentation followed the LSE. Four unusually thick varves with increased amounts of allochthonous material indicate serious disturbance of the local environment immediately after the LSE, related to increased storminess and/or the occurrence of high intensity rainfall events. A pronounced reduction of biogenic silica accumulation for c. 60 years after the LSE could reflect a period of acidification. Indications of a simultaneous lake level increase until c. 60 years after the LSE are in line with the supposed reduced evapotranspiration associated with cooler conditions. About 120 years after the LSE, increased oxygen access at the lake bottom, allochthonous input and Cl fluxes point to an onset of increasingly stronger westerly winds, probably as a long-term response to the LSE. This supports the idea of a southward shift of the mid-latitude westerlies wind system within the interval between the LSE and the beginning of the Younger Dryas. The pace of the southwards shift of this wind system decreased from 10 km a−1 in the initial phase (40–120 years after LSE) to 6 km a−1 in the later phase (120–200 years after LSE).
    Keywords: 551 ; Laacher See eruption (LSE) ; lake sediments
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  • 46
    Publication Date: 2021-10-15
    Description: Upwelling ocean currents associated with oxygen minimum zones (OMZs) supply nutrients fuelling intense marine productivity. Perturbations in the extent and intensity of OMZs are projected in the future, but it is currently uncertain how this will impact fluxes of redox-sensitive trace metal micronutrients to the surface ocean. Here we report seawater concentrations of Fe, Mn, Co, Cd, and Ni alongside the redox indicator iodide/iodate in the Peruvian OMZ during the 2015 El Niño event. The El Niño drove atypical upwelling of oxygen-enriched water over the Peruvian Shelf, resulting in oxidized iodine and strongly depleted Fe (II), total dissolved Fe, and reactive particulate Fe concentrations relative to non-El Niño conditions. Observations of Fe were matched by the redox-sensitive micronutrients Co and Mn, but not by non-redox-sensitive Cd and Ni. These observations demonstrate that oxygenation of OMZs significantly reduces water column inventories of redox-sensitive micronutrients, with potential impacts on ocean productivity.
    Keywords: 551 ; iron ; trace metals ; oxygen minimum zone ; El Niño ; eastern tropical south pacific ; shelf source
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  • 47
    Publication Date: 2021-10-15
    Description: Heat transport in natural porous media, such as aquifers or streambeds, is generally modeled assuming local thermal equilibrium (LTE) between the fluid and solid phases. Yet, the mathematical and hydrogeological conditions and implications of this simplification have not been fully established for natural porous media. To quantify the occurrence and effects of local thermal disequilibrium during heat transport, we systematically compared thermal breakthrough curves from a LTE with those calculated using a local thermal nonequilibrium (LTNE) model, explicitly allowing for different temperatures in the fluid and solid phases. For the LTNE model, we developed a new correlation for the heat transfer coefficient representative of the conditions in natural porous aquifers using six published experimental results. By conducting an extensive parameter study (〉50,000 simulations), we show that LTNE effects do not occur for grain sizes smaller than 7 mm or for groundwater flow velocities that are slower than 1.6 m day−1. The limits of LTE are likely exceeded in gravel aquifers or in the vicinity of pumped bores. For such aquifers, the use of a LTE model can lead to an underestimation of the effective thermal dispersion by a factor of up to 30 or higher, while the advective thermal velocity remains unaffected for most conditions. Based on a regression analysis of the simulation results, we provide a criterion which can be used to determine if LTNE effects are expected for particular conditions.
    Keywords: 551 ; local thermal nonequilibrium ; thermal dispersion ; modeling advective heat transport ; local thermal equilibrium ; porous aquifer
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  • 48
    Publication Date: 2021-10-15
    Description: Tunnel valleys are assumed to form near the margin of ice sheets. Hence, they can be used to reconstruct the dynamics of former ice margins. The detailed formation and infill of tunnel valleys, however, are still not well understood. Here, we present a dense grid of high-resolution 2D multi-channel reflection seismic data from the German sector of the southeastern North Sea imaging tunnel valleys in very great detail. Three tunnel valley systems were traced over distances ranging between 11 and 21 km. All tunnel valleys are completely filled and buried. They differ in incision depth, incision width and number of incisions. The tunnel valleys cut 130–380 m deep into Neogene, Palaeogene and Cretaceous sediments; they show a lower V-shaped and an upper U-shaped morphology. For individual tunnel valleys, the overall incision direction ranges from east–west to northeast–southwest. Two tunnel valleys intersect at an oblique angle without reuse of the thalweg. These valleys incise into a pre-existing glaciotectonic complex consisting of thrust sheets in the northwest of the study area. The analysis of the glaciotectonic complex and the tunnel valleys leads us to assume that we identified several marginal positions of (pre-)Elsterian ice lobes in the southeastern North Sea.
    Keywords: 551 ; 622.15 ; glaciogenic unconformity ; glaciotectonic complex ; ice margin ; Quaternary succession ; tunnel valleys
    Language: English
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  • 49
    Publication Date: 2021-10-15
    Description: The climate of the western Mediterranean was characterized by a strong precipitation gradient during the Holocene driven by atmospheric circulation patterns. The scarcity of terrestrial paleoclimate archives has precluded exploring this hydroclimate pattern during Marine Isotope Stages 5 to 3. Here we present stable carbon and oxygen isotope records from three flowstones from southeast Iberia, which show that Dansgaard/Oeschger events were associated with more humid conditions. This is in agreement with other records from the Iberian Peninsula, the Mediterranean, and western Europe, which all responded in a similar way to millennial-scale climate variability in Greenland. This general increase in precipitation during Dansgaard/Oeschger events cannot be explained by any present-day or Holocene winter atmospheric circulation pattern. Instead, we suggest that changes in sea surface temperature played a dominant role in determining precipitation amounts in the western Mediterranean.
    Keywords: 551 ; Spain ; last glacial ; Dansgaard/Oeschger ; speleothem ; Marine Isotope Stage 3 ; western Mediterranean climate
    Language: English
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  • 50
    Publication Date: 2021-10-15
    Description: The Middle Eocene Climatic Optimum (MECO) was a gradual warming event and carbon cycle perturbation that occurred between 40.5 and 40.1 Ma. A number of characteristics, including greater-than-expected deep-sea carbonate dissolution, a lack of globally coherent negative δ13C excursion in marine carbonates, a duration longer than the characteristic timescale of carbon cycle recovery, and the absence of a clear trigger mechanism, challenge our current understanding of the Earth system and its regulatory feedbacks. This makes the MECO one of the most enigmatic events in the Cenozoic, dubbed a middle Eocene “carbon cycle conundrum.” Here we use boron isotopes in planktic foraminifera to better constrain pCO2 changes over the event. Over the MECO itself, we find that pCO2 rose by only 0.55–0.75 doublings, thus requiring a much more modest carbon injection than previously indicated by the alkenone δ13C-pCO2 proxy. In addition, this rise in pCO2 was focused around the peak of the 400 kyr warming trend. Before this, considerable global carbonate δ18O change was asynchronous with any coherent ocean pH (and hence pCO2) excursion. This finding suggests that middle Eocene climate (and perhaps a nascent cryosphere) was highly sensitive to small changes in radiative forcing.
    Keywords: 551 ; boron isotopes ; pCO2 reconstruction ; Middle Eocene Climatic Optimum ; carbon cycle ; paleoclimate ; cryosphere
    Language: English
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  • 51
    Publication Date: 2021-10-15
    Description: Millennial-scale reductions in monsoon precipitation, so-called Weak Monsoon Intervals (WMIs), have been identified in numerous paleoclimate records across the Afro-Asian monsoon domain throughout the last glacial-interglacial cycle. These are considered the regional response to cooling during Heinrich events in the North Atlantic realm and several mechanisms have been suggested to explain this hemisphere-scale climatic teleconnection. In particular, reductions in Indian Ocean sea surface temperature (SST) have been proposed as the linking element between Heinrich events and WMIs. However, the validity of this relationship has only been demonstrated for the last ~20 kyr, leaving unresolved whether it also holds on longer time scales. Here we present a new paired record of planktonic foraminifera-based δ18Osw-ivc and UK'37-based SST from the northern Bay of Bengal, covering the last ~130 kyr. The δ18Osw-ivc record clearly reflects orbitally paced changes of Indian Summer Monsoon intensity superimposed by centennial- to millennial-scale WMIs that occurred synchronously to North Atlantic Heinrich events. Comparison with the UK'37-based SST reconstruction reveals, however, that WMIs in most cases were not paralleled by ocean surface cooling, questioning whether Indian Ocean SST lowering was the linking element between Heinrich events and reductions in monsoon precipitation in Asia also during the last glacial period.
    Keywords: 551 ; Indian Summer Monsoon ; Weak Monsoon Intervals ; marine sediments ; Bay of Bengal ; foraminifera oxygen isotopes ; UK'37 sea surface temperature
    Language: English
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  • 52
    Publication Date: 2021-10-27
    Description: Vertical and horizontal components of GNSS displacements in the Long Valley Caldera and adjacent Sierra Nevada range show a clear correlation with hydrological trends at both multiyear and seasonal time scales. We observe a clear vertical and horizontal seasonal deformation pattern primarily attributable to the solid earth response to hydrological surface loading at large-to-regional (Sierra Nevada range) scales. Several GNSS sites, located at the eastern edge of the Sierra Nevada along the southwestern rim of Long Valley Caldera, also show significant horizontal deformation that cannot be explained by elastic deformation from surface loading. Due to the location of these sites and the strong correlation between their horizontal displacements and spring discharge, we hypothesize that this deformation reflects poroelastic processes related to snowmelt runoff water infiltrating into the Sierra Nevada slopes around Long Valley Caldera. Interestingly, this is also an area where water infiltrates to feed the local hydrothermal system, and where snowmelt-induced earthquake swarms have been recently detected.
    Keywords: 551 ; Long Valley Caldera ; GNSS observations ; transient signal ; nontectonic deformation
    Language: English
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  • 53
    Publication Date: 2021-10-27
    Description: On interannual timescales the growth rate of atmospheric CO2 is largely controlled by the response of the land and ocean carbon sinks to climate variability. Yet, it is unknown to what extent this variability limits the predictability of atmospheric CO2 variations. Using perfect-model Earth System Model simulations, we show that variations in atmospheric CO2 are potentially predictable for 3 years. We find a 2-year predictability horizon for global oceanic CO2 flux with longer regional predictability of up to 7 years. The 2-year predictability horizon of terrestrial CO2 flux originates in the tropics and midlatitudes. With the predictability of the isolated effects of land and ocean carbon sink on atmospheric CO2 of 5 and 12 years respectively, land dampens the overall predictability of atmospheric CO2 variations. Our research shows the potential of Earth System Model-based predictions to forecast multiyear variations in atmospheric CO2.
    Keywords: 551 ; decadal predictability ; atmospheric CO2 ; carbon fluxes ; internal variability ; Earth System Model
    Language: English
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  • 54
    Publication Date: 2021-10-27
    Description: Understanding hemisphere-wide millennial-scale temperature variability during past glacials in response to ice sheet dynamics and orbital forcing is one of the key targets for Quaternary climate research. While an inland propagation of abrupt temperature changes into Eurasia from the North Atlantic realm during the last glacial (Weichselian) receives increasingly broad support, much less is known regarding the penultimate glacial (Saalian) temperature variability, especially from a continental interior perspective. Here, we present a TEX86-derived lake surface temperature (LST) record from the former Black Sea “Lake” covering nearly the entire Marine Isotope Stage (MIS) 6. While orbital-scale LST cooling likely relates to meltwater discharge from the retreating Eurasian Ice Sheet during insolation maxima, millennial-scale LST variability suggests interstadial warming in phase with Greenland and northern Mediterranean Sea temperature records during the first half of MIS 6. Although summer insolation reached an interglacial-like level during this period, we propose that the reduced extent of the Eurasian Ice Sheet associated with northward shifted atmospheric fronts was ultimately responsible for the inland propagation of Dansgaard-Oeschger-like temperature variability. During the second half of MIS 6, temperature patterns across the North Atlantic-Eurasian corridor were more variable and less comparable with each other, likely because of the larger continental ice sheet weakening northern hemisphere atmospheric teleconnections. Temperature records across the North Atlantic-Eurasian realm suggest a weaker atmospheric teleconnection during MIS 6 compared to MIS 3, likely related to a stronger imprint of the Eurasian Ice Sheet on the continental and regional climate.
    Keywords: 551 ; lake surface temperature ; Black Sea ; MIS 6 ; Eurasia
    Language: English
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  • 55
    Publication Date: 2021-10-11
    Description: We present a local earthquake tomography to illuminate the crustal and uppermost mantle structure beneath the southern Puna plateau and to test the delamination hypothesis. Vp and Vp/Vs ratios were obtained using travel time variations recorded by 75 temporary seismic stations between 2007 and 2009. In the upper crust, prominent low Vp anomalies are found beneath the main volcanic centers, indicating the presence of magma and melt beneath the southern Puna plateau. Beneath the Moho at around 90-km depth, a strong high Vp anomaly is detected just west of the giant backarc Cerro Galan ignimbrite caldera. This high Vp anomaly is only resolved if earthquakes with an azimuthal gap up to 300° are included in the inversion. However, we show through data subset and synthetic tests that the anomaly is robust due to our specific station-event geometry and interpret it as a delaminated block of lower crust and uppermost mantle lithosphere under the southern Puna plateau. The low velocities in the crust are interpreted as a product of the delamination event that triggered the rise of fluids and melts into the crust and induced the high topography in this part of the plateau. The tomography also reveals the existence of low-velocity anomalies that link arc magmatism at the Ojos del Salado volcanic center with slab seismicity clusters at depths of about 100 and 150 km and support fluid transport in the mantle wedge due to dehydration reaction within the subducted slab.
    Keywords: 551 ; southern Puna plateau ; local earthquake tomography ; lithospheric delamination ; slab dehydration ; crustal melt accumulation
    Language: English
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  • 56
    Publication Date: 2021-10-11
    Description: Geophysical and geochemical data indicate there is abundant fluid expulsion in the Nootka fault zone (NFZ) between the Juan de Fuca and Explorer plates and the Nootka continental slope. Here we combine observations from 〉20 years of investigations to demonstrate the nature of fluid-flow along the NFZ, which is the seismically most active region off Vancouver Island. Seismicity reaching down to the upper mantle is linked to near-seafloor manifestation of fluid flow through a network of faults. Along the two main fault traces, seismic reflection data imaged bright spots 100–300 m below seafloor that lie above changes in basement topography. The bright spots are conformable to sediment layering, show opposite-to-seafloor reflection polarity, and are associated with frequency reduction and velocity push-down indicating the presence of gas in the sediments. Two seafloor mounds ~15 km seaward of the Nootka slope are underlain by deep, nonconformable high-amplitude reflective zones. Measurements in the water column above one mound revealed a plume of warm water, and bottom-video observations imaged hydrothermal vent system biota. Pore fluids from a core at this mound contain predominately microbial methane (C1) with a high proportion of ethane (C2) yielding C1/C2 ratios 〈500 indicating a possible slight contribution from a deep source. We infer the reflective zones beneath the two mounds are basaltic intrusions that create hydrothermal circulation within the overlying sediments. Across the Nootka continental slope, gas hydrate-related bottom-simulating reflectors are widespread and occur at depths indicating heat flow values of 80–90 mW/m2.
    Keywords: 551 ; fluid flow ; Nootka transform fault ; gas hydrate ; intrusion ; heat flow
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  • 57
    Publication Date: 2021-10-14
    Description: Estuarine CO2 emissions are important components of regional and global carbon budgets, but assessments of this flux are plagued by uncertainties associated with gas transfer velocity (k) parameterization. We combined direct eddy covariance measurements of CO2 flux with waterside pCO2 determinations to generate more reliable k parameterizations for use in small estuaries. When all data were aggregated, k was described well by a linear relationship with wind speed (U10), in a manner consistent with prior open ocean and estuarine k parameterizations. However, k was significantly greater at night and under low wind speed, and nighttime k was best predicted by a parabolic, rather than linear, relationship with U10. We explored the effect of waterside thermal convection but found only a weak correlation between convective scale and k. Hence, while convective forcing may be important at times, it appears that factors besides waterside thermal convection were likely responsible for the bulk of the observed nighttime enhancement in k. Regardless of source, we show that these day-night differences in k should be accounted for when CO2 emissions are assessed over short time scales or when pCO2 is constant and U10 varies. On the other hand, when temporal variability in pCO2 is large, it exerts greater control over CO2 fluxes than does k parameterization. In these cases, the use of a single k value or a simple linear relationship with U10 is often sufficient. This study provides important guidance for k parameterization in shallow or microtidal estuaries, especially when diel processes are considered.
    Keywords: 551 ; air-water CO2 exchange ; gas transfer velocity ; convective ; eddy covariance ; estuary ; gas exchange
    Language: English
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  • 58
    Publication Date: 2021-09-13
    Description: The Tajik basin archives the orogenic evolution of the Pamir hinterland. Stratigraphic-sedimentologic observations from Cretaceous-Pliocene strata along its eastern margin describe the depositional environment and basin-formation stages in reaction to hinterland exhumation and basin inversion. During the Late Cretaceous-Eocene (preorogenic stage: ~100–34 Ma), a shallow-marine to terrestrial basin extended throughout Central Asia. An alluvial plain with influx of conglomerate bodies (Baljuvon Formation) indicates a first pulse of hinterland erosion and foreland-basin formation in the late Oligocene-early Miocene (synorogenic stage Ia: ~34–23 Ma). Further hinterland exhumation deposited massive alluvial conglomerates (Khingou Formation) in the early-middle Miocene (synorogenic stage Ib: ~23–15 Ma). Westward thickening growth strata suggest transformation of the Tajik basin into the Tajik fold-thrust belt in the middle-late Miocene (synorogenic stage IIa: ~15–5 Ma). Increased water supply led to the formation of fluvial mega-fans (Tavildara Formation). Latest Miocene-Pliocene shortening constructed basin morphology that blocked sediment bypass into the central basin from the east (Karanak Formation), triggering drainage-system reorganization from transverse to longitudinal sediment transport (synorogenic stage IIb: 〈 ~5 Ma). Accelerated shortening (~27–20 Ma) and foreland-directed collapse (~23–12 Ma) of Pamir-plateau crust loaded the foreland and induced synorogenic stages Ia and Ib. Coupling of Indian and Asian cratonic lithospheres and onset of northward and westward delamination/rollback of Asian lithosphere (i.e., lithosphere of the Tajik basin) beneath the Pamir at ~12–11 Ma transformed the Tajik basin into the Tajik fold-thrust belt (synorogenic stage IIa). The timing of the sedimentologically derived basin reconfiguration matches the thermochronologically derived onset of Tajik-basin inversion at ~12 Ma.
    Keywords: 551 ; 555 ; Pamir-Tibet formation ; Tajik retro-foreland basin ; growth strata ; provenance ; deep-lithosphere trigger
    Language: English
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  • 59
    Publication Date: 2021-09-15
    Description: Geophysical length scales defined from induced-polarization measurements can be used in models of permeability (k) prediction. We explore the relative merit of different induced-polarization parameters as proxies of an effective hydraulic radius (reff) that can be used to predict permeability from a modified Hagen–Poiseuille equation. Whereas geometrical measures of the hydraulic radius are good proxies of reff, the induced-polarization measures are not well correlated with reff. However, a new proxy of reff that considers both imaginary conductivity and formation factor shows an improved correlation with reff. The resulting model enables a better quality of permeability prediction compared with the other geophysical length scales, but does not reach the predictive quality of the models based on geometrical length scales. The specific polarizability defined when incorporating the effect of the formation factor on imaginary conductivity appears to be independent of pore geometry, indicating that it is the correct parameter representing the role of the surface electrochemistry on the induced-polarization effect. However, the joint dependence of induced-polarization measurements on both the pore radius and the tortuosity and porosity of the interconnected pore network is a limitation to the widely explored use of induced-polarization measurements to isolate surface properties from volumetric properties of the interconnected pore network.
    Keywords: 551 ; 622.15 ; Complex conductivity ; Hydrogeophysics ; Induced polarization ; Permeability ; Porosity
    Language: English
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  • 60
    Publication Date: 2021-09-15
    Description: New marine geophysical data acquired across the partly ice-covered northern East Greenland continental margin highlight a complex interaction between tectonic and magmatic events. Breakup-related lava flows are imaged in reflection seismic data as seaward dipping reflectors, which are found to decrease in size both northward and southward from a central point at 75°N. We provide evidence that the magnetic anomaly pattern in the shelf area is related to volcanic phases and not to the presence of oceanic crust. The remnant magnetization of the individual lava flows is used to deduce a relative timing of the emplacement of the volcanic wedges. We find that the seaward dipping reflectors have been emplaced over a period of 2–4 Ma progressively from north to south and from landward to seaward. The new data indicate a major post-middle Eocene magmatic phase around the landward termination of the West Jan Mayen Fracture Zone. This post-40-Ma volcanism likely was associated with the progressive separation of the Jan Mayen microcontinent from East Greenland. The breakup of the Greenland Sea started at several isolated seafloor spreading cells whose location was controlled by rift structures and led to the present-day segmentation of the margin. The original rift basins were subsequently connected by steady-state seafloor spreading that propagated southward, from the Greenland Fracture Zone to the Jan Mayen Fracture Zone.
    Keywords: 551 ; 559 ; NE Greenland ; seismic reflection ; seaward dipping reflectors ; continent-ocean transition ; rifting ; Greenland Sea
    Language: English
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  • 61
    Publication Date: 2021-09-15
    Description: We combine numerical modeling of lithospheric extension with analysis of seismic moment release and earthquake b-value in order to elucidate the mechanism for deep crustal seismicity and seismic swarms in the Main Ethiopian Rift (MER). We run 2-D numerical simulations of lithospheric deformation calibrated by appropriate rheology and extensional history of the MER to simulate migration of deformation from mid-Miocene border faults to ∼30 km wide zone of Pliocene to recent rift floor faults. While currently the highest strain rate is localized in a narrow zone within the rift axis, brittle strain has been accumulated in a wide region of the rift. The magnitude of deviatoric stress shows strong variation with depth. The uppermost crust deforms with maximum stress of 80 MPa, at 8–14 km depth stress sharply decreases to 10 MPa and then increases to a maximum of 160 MPa at ∼18 km depth. These two peaks at which the crust deforms with maximum stress of 80 MPa or above correspond to peaks in the seismic moment release. Correspondingly, the drop in stress at 8–14 km correlates to a low in seismic moment release. At this depth range, the crust is weaker and deformation is mainly accommodated in a ductile manner. We therefore see a good correlation between depths at which the crust is strong and elevated seismic deformation, while regions where the crust is weaker deform more aseismically. Overall, the bimodal depth distribution of seismic moment release is best explained by the rheology of the deforming crust.
    Keywords: 551 ; 556 ; numerical modeling ; earthquakes ; Main Ethiopian Rift ; strain rate
    Language: English
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  • 62
    Publication Date: 2021-09-08
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: contributiontoperiodical , doc-type:contributionToPeriodical
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  • 63
    Publication Date: 2021-10-06
    Description: Loess sediments are windblown silt deposits with, in general, a carbonate grain content of up to 30%. While regionally, loess was reported to increase weathering fluxes substantially, the influence on global weathering fluxes remains unknown. Especially on glacial-interglacial time scales, loess weathering fluxes might have contributed to land-ocean alkalinity flux variability since the loess areal extent during glacial epochs was larger. To quantify loess weathering fluxes, global maps representing the loess distribution were compiled. Water chemistry of rivers draining recent loess deposits suggests that loess contributes over-proportionally to alkalinity concentrations if compared to the mean of alkalinity concentrations of global rivers (~4,110 µeq L−1 for rivers draining loess deposits and ~1,850 µeq L−1 for the total of global rivers), showing comparable alkalinity concentration patterns in rivers as found for carbonate sedimentary rocks. Loess deposits, covering ~4% of the ice- and water-free land area, increase calculated global alkalinity fluxes to the coastal zone by 16%. The new calculations lead to estimating a 4% higher global alkalinity flux during the Last Glacial Maximum (LGM) compared to present fluxes. The effect of loess on that comparison is high. Alkalinity fluxes from silicate-dominated lithological classes were ~28% and ~30% lower during the LGM than recent (with loess and without loess, respectively), and elevated alkalinity fluxes from loess deposits compensated for this. Enhanced loess weathering dampens due to a legacy effect changes in silicate-dominated lithologies over the glacial-interglacial time scale.
    Keywords: 551 ; chemical weathering ; loess deposits
    Language: English
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  • 64
    Publication Date: 2021-12-03
    Description: In contrast to seamount chains, small solitary seamounts/seamount groups have rarely been sampled despite their large number and therefore their origins remain enigmatic. Here we present new 40Ar/39Ar, trace element and Nd-Hf-Pb isotope data from the solitary Demenitskoy Seamount, the isolated Tolkien seamount group and the Krylov Seamount and Ridge in the Canary Basin, Central Atlantic Ocean. Their chemical compositions range from intraplate ocean-island-basalt (Demenitskoy) to mid-ocean-ridge-basalt (Tolkien and Krylov) types. Lavas from all three seamount groups, however, show geochemical evidence for involvement of enriched Canary/Cape Verde plume material. Seismic tomography shows that large areas around these mantle plumes consist of dispersed low-velocity material, which could represent diffusely-upwelling plume mantle. Melts from such upwelling mantle could form isolated seamounts. Diffuse upwelling of plume material is likely to be extremely widespread but has been poorly studied to date. Significance Statement A fundamental question concerns the origin of the hundreds of thousands of solitary seamounts and small isolated clusters of such seamounts on the seafloor of the world's ocean basins. Most of them do not fit into any currently accepted models (e.g. they are not associated with a linear hotspot track or plate boundary processes). Their formation could therefore represent a new kind of intraplate volcanism that in fact could be extremely widespread but has been thus far largely neglected. In this manuscript, we report geochemical data from three isolated seamount sites in the Canary Basin and propose a provocative model for their formation that can also be applied to isolated seamounts elsewhere. Our study is therefore also a plea for the long overdue systematic investigation of small seamount volcanism in the world's ocean basins. I hereby confirm that all the data and interpretations are new and have not been published elsewhere. All co-authors have been actively involved in this work, have approved the manuscript and agreed to this submission.
    Keywords: 551 ; Canary Basin ; seamounts ; isotopic compositions
    Language: English
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  • 65
    Publication Date: 2021-11-30
    Description: The Indonesian Throughflow (ITF) operates as an important link in global thermohaline circulation, and ITF variability probably modulated Pliocene climate change. Yet, whether ITF variability accounted for oceanographic change south of Northwest Cape remains controversial. Here, we present a multiproxy oceanographic reconstruction from the Perth Basin and reconstruct the Pliocene history of the Leeuwin Current (LC). We show that the LC was active throughout the Pliocene, albeit with fluctuations in intensity and scope. Three main factors controlled LC strength. First, a tectonic ITF reorganization caused an abrupt and permanent LC reduction at 3.7 Ma. On shorter timescales, eustatic sea level and direct orbital forcing of wind patterns hampered or promoted the LC. At 3.3 Ma, for instance, LC intensity plunged in response to a eustatic ITF restriction. Site U1459 then fell outside the extent of a weakened LC, and the latitudinal sea surface temperature gradient along West Australia doubled its steepness.
    Keywords: 551 ; Perth Basin ; sediment core ; multiproxy geochemical records ; Pliocene ; Leeuwin Current (LC)
    Language: English
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  • 66
    Publication Date: 2021-12-03
    Description: The rising popularity and strong increase in the number of electric bicycles make it necessary to consider the built-in resources as well as possible treatments after the use phase. The time lag between the purchase and the occurrence of relevant defects suggests significant increases in defective components. Especially the great dynamics of the market due to regular innovations, product renewals, and the lack of spare parts availability for older models make the long-term use by customers much more difficult than for conventional bicycles. Therefore, it is necessary to analyze circular business models for the electric bicycle market. In this way, the required structures for a sustainable electric bicycle industry can be created so that valuable materials do not go into disposal but undergo a new use phase. Based on the results of "AddRE-Mo-Value Preservation Scenarios for Urban Electromobility of Persons and Loads through Additive Manufacturing and Remanufacturing," a research project funded by the German Federal Ministry of Education and Research, this paper addresses four circular business models, two sales models, and two service models. The guiding research interest of this paper is the combination of remanufacturing and additive manufacturing from a business model perspective, analyzing the extent to which additive remanufacturing can be considered a solution for electric bicycles' circularity. After describing the approach and methods used to develop these four circular business models the business models are described and analyzed using the Business Model Canvas. Based on this analysis, it is shown that the combination of remanufacturing and additive manufacturing can be applied to the electric bicycle market and be integrated into both sales and service models. The description of these business models will help managers design viable business models in the context of sustainable electric bicycles. It also shows that the individual partners within the value chain must collaborate more closely. In the electric bicycle industry, a single company will probably not be able to close the product cycle completely. Further research is needed to develop concepts of the business models and examine their practical feasibility in technical and organizational operations to achieve a circular economy.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
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  • 67
    Publication Date: 2021-11-11
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: contributiontoperiodical , doc-type:contributionToPeriodical
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  • 68
    Publication Date: 2021-11-11
    Description: Reuse is still seen as a "niche phenomenon" and consumers seem to waste economic opportunities linked to buying and selling second-hand products. For this reason, this paper focuses on incentives and barriers to sell and buy second-hand products, as indicated in the literature, and applies a theoretical framework of transaction costs to explain the existing consumption patterns. For this paper, a representative online survey was conducted in which 1023 consumers in Germany participated, age 16 and older. The data were analyzed for statistically significant deviations between different groups of economic actors selling or buying second-hand products. Results show that valuable unused products exist in households, but barriers such as uncertainties about the reliability of the buyer or the quality of the product hinder the transition into sustainable consumption. Different forms of transaction costs are important explanatory variables to explain why consumers nevertheless predominantly buy new products, although they are aware that second-hand would save money and make an individual contribution to climate protection.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
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  • 69
    Publication Date: 2021-11-11
    Description: This paper argues that, although Japan's and Germany's energy transition paths differ in detail, a trend towards decentralisation is clearly evident in both countries. Based on comprehensive screening, own stocktaking and the results of a stakeholder dialogue, this paper highlights the motivation for different local actors to enter the energy market in both countries. Although there are challenges to success in a market dominated by large energy companies, this paper argues that the benefits to local communities outweigh the efforts. Overall, it is shown that democratisation and the decentralisation of the energy system are suitable to facilitate a successful transformation process in both countries.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: article , doc-type:article
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  • 70
    Publication Date: 2021-11-26
    Description: More and more companies are announcing their intention to become climate-neutral and numerous companies already offer climate-neutral products or services: From climate-neutral parcel delivery to air travel. But what exactly do the companies' net-zero targets mean? Is the target set ambitious? And what role does offsetting play, i.e., purchasing carbon credits that are accounted against the company's own climate target? The approaches behind the proclaimed targets are often difficult to understand. Against this background, this Zukunftsimpuls provides ten recommendations for the definition and implementation of neutrality targets. Among other things, the authors advocate the use of a robust database as the basis for net-zero targets, emphasize the importance of transparent communication, and highlight the role that offsetting should play. Purchased carbon credits should make as limited a contribution as possible for meeting climate targets and should only be used to offset emissions that cannot be reduced or avoided. More generally, net-zero targets should not be made the sole criterion for ambitious climate strategies. Rather, they are a building block of a much more comprehensive strategy of corporate climate action.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: workingpaper , doc-type:workingPaper
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  • 71
    Publication Date: 2021-10-25
    Description: Estimates of flood susceptibility and land loss in the world's coastal regions depend on our knowledge of sea level rise (SLR) from increases in ocean mass and volume, as well as knowledge of vertical land motion. Conventional approaches to the latter include tide-gauge and Global Positioning System (GPS) measurements relative to well-anchored monuments few meters below the surface. However, in regions of rapid Holocene sedimentation, compaction of this material can add a significant component to the surface lowering. Unfortunately, this process has been difficult to quantify, especially for the shallowest material above the monument. Here we use a new technique, GPS interferometric reflectometry, to estimate the rate of this process in the Mississippi Delta and the eastern margin of the North Sea. We show that the rate of shallow compaction is comparable to or larger than the rate of global SLR, adding 35% and 65%, respectively, to the rate of relative SLR by 2100.
    Keywords: 526.3 ; 551 ; GPS ; interferometric reflectometry ; tide gauge ; coastal subsidence ; shallow subsidence ; Holocene sediment compaction
    Language: English
    Type: map
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