Browsing by Subject "permafrost"
Now showing items 1-10 of 10
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A permafrost glacial hypothesis – Permafrost carbon might help explaining the Pleistocene ice ages
(E&G – Quaternary Science Journal; Vol.61, No. 1)
Während der letzten ~100 ka Glazial-Interglazial-Zyklen war die Konzentration des Treibhausgases CO2 in der Atmosphäre eng mit der globalen Temperatur gekoppelt. Die Gründe fuür die CO2 Konzentrationsschwankungen wurden ... -
Burial and Origin of Permafrost-Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea
; Meyer, V.; Riedel, T.; ; Mathieu, L.; ; ; ; ; (Geophysical Research Letters, 2020)
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 ... -
Effects of Reversal of Water Flow in an Arctic Floodplain River on Fluvial Emissions of CO2 and CH4
; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Biogeosciences, 2022-01-04)
When organic matter from thawed permafrost is released, the sources and sinks of greenhouse gases (GHGs), like carbon dioxide (CO2) and methane (CH4) in Arctic rivers will be influenced in the future. However, the temporal ... -
Northeast Siberian Permafrost Ice‐Wedge Stable Isotopes Depict Pronounced Last Glacial Maximum Winter Cooling
; ; ; ; ; ; ; (Geophysical Research Letters, 2021-04-09)
Stable isotopes (δ18O, δD) of wedge ice hold potential to reconstruct past winter climate conditions. Here, we present records of the marine isotope stages (MIS) 3 and 2 including the last Glacial maximum (LGM) from Bol’shoy ... -
Permafrost am Pico de Orizaba/Mexiko
(E&G – Quaternary Science Journal; Vol.26, No. 1)Permafrost tritt in Mexiko (ca. 19° N) am Pico de Orizaba in Höhen zwischen 5000 und 4600 m auf. Der Permafrost ist fossil. Verschiedene Bodeneistypen können unterschieden werden. Die Permafrostvorkommen unterhalb der ... -
Präwürmzeitliche Eiskeile und Kryoturbationsformen östlich Bordeaux—eine Mitteilung zur Ausdehnung des vorzeitlichen Permafrostbereichs in Südwestfrankreich
(E&G – Quaternary Science Journal; Vol.39, No. 1) -
Pronounced increase in slope instability linked to global warming: A case study from the eastern European Alps
; Comiti, Francesco; (Earth Surface Processes and Landforms, 2021-03-06)
In recent decades, slope instability in high‐mountain regions has often been linked to increase in temperature and the associated permafrost degradation and/or the increase in frequency/intensity of rainstorm events. In ... -
Surface velocity fields of active rock glaciers and ice‐debris complexes in the Central Andes of Argentina
; Halla, Christian; Schwalbe, Ellen; Bottegal, Estefania; Trombotto Liaudat, Dario; Schrott, Lothar (Earth Surface Processes and Landforms, 2020-12-30)
Rock glaciers and transitional ice‐debris complexes predominate the Central Andean landform assemblage, yet regional studies on their state of activity and their kinematics remain sparse. Here we utilize the national glacier ... -
Three‐dimensional investigation of an open‐ and a closed‐system Pingo in northwestern Canada
; (Permafrost and Periglacial Processes, 2021-05-13)
The present study presents three‐dimensional investigations of a hydrostatic pingo in the Mackenzie Delta region and a hydraulic pingo in the Ogilvie Mountains and contributes to a better understanding about the internal ... -
Weichselzeitliche Kryocalcite als Hinweise für Eisseen in der Hüttenbläserschachthöhle (Iserlohn/NRW)
Richter, K., Detlev; Goll, Kristina; Grebe, Witold; Niedermayr, Andrea; Platte, Alexander; (E&G – Quaternary Science Journal; Vol.64)
C/O-stable isotope composition (VPDB) of speleothems from the Makkaronihalle of the Hüttenbläserschacht Cave in Iserlohn shows a clear separation between glacial and interglacial calcites. In contrast to normal speleothems ...
