Matches in SemOpenAlex for { <https://semopenalex.org/work/W2947359365> ?p ?o ?g. }
Showing items 1 to 61 of
61
with 100 items per page.
- W2947359365 endingPage "4" @default.
- W2947359365 startingPage "2" @default.
- W2947359365 abstract "Understanding the mechanisms of groundwater recharge and flow in periglacial environments remains enigmatic. Methane releases from melting permafrost in a warming world are a hot topic in contemporary climate research. Noble gas analyses have been proposed to study methane-driven degassing in lakes as well as in permafrost terrains. The Ledo-Paniselian aquifer is shown to provide an analogue for such processes, from the last period of global warming after the LGM. It is postulated that recharge from methane bubbling thermokarst lakes to groundwater took place, and can be recognized by a specific signature in the groundwater. The Ledo-Paniselian aquifer offers unique opportunities to study periglacial groundwater recharge during the LGM, as it was located in the permanent permafrost area to the south of the ice sheet at that time. It contains Holocene and Pleistocene groundwaters, which are separated by a recharge gap, referring to permafrost during the LGM. This is confirmed by noble gas temperature (NGT) data. In the samples immediately upstream of this gap, several potential indicators for the specific methanogenic recharge conditions from thawing permafrost are being put forward, based on noble gases, chemical and isotopic data.Immediately upstream of the age gap, groundwaters show strikingly deviating HCO3−, SO42−, δ13C, δ18O and δ2H compared to the regional trend, while their 14C model ages are too young, and NGTs seem too high. These samples are affected by degassing, which is not an artefact of sampling, and which, according to their radiogenic helium concentrations, occurred early on, during recharge or shortly thereafter. The origin of these samples could be explained by the conditions prevailing as the permafrost thawed, and groundwater recharge could resume. It is inferred that the degassed samples were infiltrated during or shortly after the LGM, when recharge from methane bubbling thermokarst lakes to groundwater took place, associated to the melting permafrost." @default.
- W2947359365 created "2019-06-07" @default.
- W2947359365 creator A5062718475 @default.
- W2947359365 date "2019-01-01" @default.
- W2947359365 modified "2023-10-18" @default.
- W2947359365 title "Quaternary International 500 – A milestone to be celebrated" @default.
- W2947359365 doi "https://doi.org/10.1016/j.quaint.2019.05.035" @default.
- W2947359365 hasPublicationYear "2019" @default.
- W2947359365 type Work @default.
- W2947359365 sameAs 2947359365 @default.
- W2947359365 citedByCount "0" @default.
- W2947359365 crossrefType "journal-article" @default.
- W2947359365 hasAuthorship W2947359365A5062718475 @default.
- W2947359365 hasConcept C111368507 @default.
- W2947359365 hasConcept C127313418 @default.
- W2947359365 hasConcept C140345934 @default.
- W2947359365 hasConcept C15098985 @default.
- W2947359365 hasConcept C151730666 @default.
- W2947359365 hasConcept C160464908 @default.
- W2947359365 hasConcept C174091901 @default.
- W2947359365 hasConcept C17409809 @default.
- W2947359365 hasConcept C187320778 @default.
- W2947359365 hasConcept C1965285 @default.
- W2947359365 hasConcept C2780155556 @default.
- W2947359365 hasConcept C75622301 @default.
- W2947359365 hasConcept C76177295 @default.
- W2947359365 hasConcept C76886044 @default.
- W2947359365 hasConceptScore W2947359365C111368507 @default.
- W2947359365 hasConceptScore W2947359365C127313418 @default.
- W2947359365 hasConceptScore W2947359365C140345934 @default.
- W2947359365 hasConceptScore W2947359365C15098985 @default.
- W2947359365 hasConceptScore W2947359365C151730666 @default.
- W2947359365 hasConceptScore W2947359365C160464908 @default.
- W2947359365 hasConceptScore W2947359365C174091901 @default.
- W2947359365 hasConceptScore W2947359365C17409809 @default.
- W2947359365 hasConceptScore W2947359365C187320778 @default.
- W2947359365 hasConceptScore W2947359365C1965285 @default.
- W2947359365 hasConceptScore W2947359365C2780155556 @default.
- W2947359365 hasConceptScore W2947359365C75622301 @default.
- W2947359365 hasConceptScore W2947359365C76177295 @default.
- W2947359365 hasConceptScore W2947359365C76886044 @default.
- W2947359365 hasLocation W29473593651 @default.
- W2947359365 hasOpenAccess W2947359365 @default.
- W2947359365 hasPrimaryLocation W29473593651 @default.
- W2947359365 hasRelatedWork W2120035461 @default.
- W2947359365 hasRelatedWork W2300972562 @default.
- W2947359365 hasRelatedWork W2729881884 @default.
- W2947359365 hasRelatedWork W2775390275 @default.
- W2947359365 hasRelatedWork W2802620913 @default.
- W2947359365 hasRelatedWork W2808319270 @default.
- W2947359365 hasRelatedWork W3021571000 @default.
- W2947359365 hasRelatedWork W3137020286 @default.
- W2947359365 hasRelatedWork W3198506195 @default.
- W2947359365 hasRelatedWork W4205562317 @default.
- W2947359365 hasVolume "500" @default.
- W2947359365 isParatext "false" @default.
- W2947359365 isRetracted "false" @default.
- W2947359365 magId "2947359365" @default.
- W2947359365 workType "article" @default.