Matches in SemOpenAlex for { <https://semopenalex.org/work/W996700706> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W996700706 abstract "Elgygytgyn Meteorite Crater in Chukotka holds the unique chance to trace frozen ground conditions back to the Pliocene. The basin was not glaciated in Quaternary time and terrestrial deposits accumulate at piedmont settings and continuously in a lake basin. Recent drilling into the permafrost of the Elgygytgyn basin recovered a 141 m long core of coarse-grained slope deposits. Drilling the complete lake fill and into the underlying bedrock provides a core that stretches back to 3.6 Myr BP, the time of the meteor impact.Permafrost conditions through time are preserved in proxy data of cryogenic weathering. Mineralogic weathering features originate in the active layer and grains are transported into the neighbouring lake forming a sediment trap. Production of silt size debris, a peculiar quartz grain morphometry, and the enrichment of quartz in the silt fraction are indicators of frozen ground conditions. They reflect thaw and freeze dynamics in the catchment when using the lake core. By now the permafrost history expands to at least 220 kyr before present documenting persistent frost weathering dynamics.Environmental change and climate signals linked to permafrost formation can be traced in ground ice hydrochemistry (i.e. 18O, D) and ice wedge architecture. The stable isotope record highlights thermal periods during the Late Quaternary, and the vegetation history based on frozen ground pollen records complements the regional climate resolution of climate conditions.Subaerial lake terrace remnants show a lake shrinking by about 80 m after an ancient highstand. A permafrost borehole temperature profile indicates a talik history of a formerly flooded area. This hypothesis is tested by a thermal modelling approach to back up the interpretation.The presentation sums up current results of studying Elgygytgyn permafrost and lake sediments related to permafrost dynamics. It is devoted to elucidate permafrost history for Far East Russia, an area yet underexposed in understanding Siberian permafrost history." @default.
- W996700706 created "2016-06-24" @default.
- W996700706 creator A5009728940 @default.
- W996700706 creator A5019757443 @default.
- W996700706 creator A5031740921 @default.
- W996700706 creator A5032656479 @default.
- W996700706 creator A5048134394 @default.
- W996700706 creator A5062390142 @default.
- W996700706 date "2010-01-01" @default.
- W996700706 modified "2023-09-26" @default.
- W996700706 title "The sedimentary record of NE Siberian permafrost in cores from El'gygytgyn Impact Crater" @default.
- W996700706 hasPublicationYear "2010" @default.
- W996700706 type Work @default.
- W996700706 sameAs 996700706 @default.
- W996700706 citedByCount "0" @default.
- W996700706 crossrefType "journal-article" @default.
- W996700706 hasAuthorship W996700706A5009728940 @default.
- W996700706 hasAuthorship W996700706A5019757443 @default.
- W996700706 hasAuthorship W996700706A5031740921 @default.
- W996700706 hasAuthorship W996700706A5032656479 @default.
- W996700706 hasAuthorship W996700706A5048134394 @default.
- W996700706 hasAuthorship W996700706A5062390142 @default.
- W996700706 hasConcept C111368507 @default.
- W996700706 hasConcept C114793014 @default.
- W996700706 hasConcept C127313418 @default.
- W996700706 hasConcept C137527640 @default.
- W996700706 hasConcept C15098985 @default.
- W996700706 hasConcept C151730666 @default.
- W996700706 hasConcept C15739521 @default.
- W996700706 hasConcept C160464908 @default.
- W996700706 hasConcept C161222754 @default.
- W996700706 hasConcept C17409809 @default.
- W996700706 hasConcept C40724407 @default.
- W996700706 hasConcept C6494504 @default.
- W996700706 hasConceptScore W996700706C111368507 @default.
- W996700706 hasConceptScore W996700706C114793014 @default.
- W996700706 hasConceptScore W996700706C127313418 @default.
- W996700706 hasConceptScore W996700706C137527640 @default.
- W996700706 hasConceptScore W996700706C15098985 @default.
- W996700706 hasConceptScore W996700706C151730666 @default.
- W996700706 hasConceptScore W996700706C15739521 @default.
- W996700706 hasConceptScore W996700706C160464908 @default.
- W996700706 hasConceptScore W996700706C161222754 @default.
- W996700706 hasConceptScore W996700706C17409809 @default.
- W996700706 hasConceptScore W996700706C40724407 @default.
- W996700706 hasConceptScore W996700706C6494504 @default.
- W996700706 hasLocation W9967007061 @default.
- W996700706 hasOpenAccess W996700706 @default.
- W996700706 hasPrimaryLocation W9967007061 @default.
- W996700706 hasRelatedWork W102801354 @default.
- W996700706 hasRelatedWork W1903775371 @default.
- W996700706 hasRelatedWork W1939817528 @default.
- W996700706 hasRelatedWork W1975730710 @default.
- W996700706 hasRelatedWork W1995879782 @default.
- W996700706 hasRelatedWork W2021528331 @default.
- W996700706 hasRelatedWork W2068294212 @default.
- W996700706 hasRelatedWork W2094308307 @default.
- W996700706 hasRelatedWork W2159678119 @default.
- W996700706 hasRelatedWork W2260244779 @default.
- W996700706 hasRelatedWork W2402641003 @default.
- W996700706 hasRelatedWork W2479509372 @default.
- W996700706 hasRelatedWork W2586082079 @default.
- W996700706 hasRelatedWork W2603707587 @default.
- W996700706 hasRelatedWork W2612974700 @default.
- W996700706 hasRelatedWork W2766368925 @default.
- W996700706 hasRelatedWork W2809492257 @default.
- W996700706 hasRelatedWork W2969685989 @default.
- W996700706 hasRelatedWork W3106978879 @default.
- W996700706 hasRelatedWork W587546502 @default.
- W996700706 isParatext "false" @default.
- W996700706 isRetracted "false" @default.
- W996700706 magId "996700706" @default.
- W996700706 workType "article" @default.