A5081720149- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Pleistocene-Era Hominins and Archaeology
- Landslides and related hazards
- Polar Research and Ecology
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Geological formations and processes
- earthquake and tectonic studies
- Geological and Geophysical Studies Worldwide
- Winter Sports Injuries and Performance
- Marine and environmental studies
- Archaeology and ancient environmental studies
- Geomagnetism and Paleomagnetism Studies
- Nuclear Physics and Applications
- Tree-ring climate responses
- Aeolian processes and effects
- Evolution and Paleontology Studies
- Astrophysics and Cosmic Phenomena
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Radioactivity and Radon Measurements
- Neutrino Physics Research
Centre de Recherche et d’Enseignement de Géosciences de l’Environnement
2015-2024
Aix-Marseille Université
2014-2024
Centre National de la Recherche Scientifique
2014-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2024
Institut de Recherche pour le Développement
2014-2024
Collège de France
2014-2022
Sustainable Europe Research Institute
2009-2021
Lamont-Doherty Earth Observatory
2012-2014
Columbia University
2012-2014
Cosmic-ray exposure dating of preserved, seismically exhumed limestone normal fault scarps has been used to identify the last few major earthquakes on seismogenic faults and recover their ages displacements through modelling content in situ[36Cl] cosmonuclide scarp rocks. However, previous studies neglected some parameters that contribute 36Cl accumulation uncertainties inferred earthquake were not discussed. To better constrain explore limits this palaeoseismological method, we developed a...
Research Article| October 01, 2012 Holocene glacier culminations in the Western Alps and their hemispheric relevance I. Schimmelpfennig; Schimmelpfennig 1Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar J.M. Schaefer; Schaefer USA2Department of Environmental Sciences, York, 10027, N. Akçar; Akçar 3Institute Geological University Bern, Switzerland S. Ivy-Ochs; Ivy-Ochs 4Insitut für...
Unlike other glacier fluctuations during the Holocene, advances Little Ice Age (LIA) occurred widely across many glaciated regions in both hemispheres. To understand climatic mechanisms driving this widespread phenomenon, it is essential to determine whether LIA was a truly global event or if confined specific regions.Exploring cosmogenic-nuclide-dated moraine chronologies offers powerful method address question. This approach leverages several key advantages:Measurements of cosmogenic...
Abstract Based on new and published cosmic-ray exposure chronologies, we show that glacier extent in the tropical Andes north Atlantic regions (TANAR) varied in-phase millennial timescales during Holocene, distinct from other regions. Glaciers experienced an early Holocene maximum extent, followed by a strong mid-Holocene retreat re-advance late Holocene. We further explore potential forcing of TANAR variations using transient climate simulations. Since Meridional Overturning Circulation...
ABSTRACT During the Late Pleistocene, an ice cap temporarily rested on highest summit of Black Forest, Feldberg, and surrounding region. Moraines inside last glaciation maximum extent document subsequent glacial standstills and/or re‐advances, but chronology deglaciation remains largely unknown. In Sankt Wilhelmer Tal, moraines were mapped, suitable moraine boulders sampled for 10 Be cosmic ray exposure (CRE) dating. Equilibrium line altitudes (ELAs) during formation reconstructed to...
CEREGE is a renowned French Research and Teaching Centre for Environmental Geosciences, employing approximately 220 staff members. In 2019, the carbon footprint of CEREGE’s research-related activities was estimated at around 7 tons CO2 equivalent per person. This primarily stems from three sources: 1) purchases that are e.g. necessary various analytical methods, 2) commuting between home remote location, 3) international travel sampling campaigns conferences.Since group about dozen...
In light of the major socio-environmental challenges our time, ensuring a safe and just world for humans non-humans calls profound changes in societies. According to 6th IPCC WG3 report, scale speed actions required keep global warming below +2°C are unparalleled at both individual institutional levels. Consequently, no sector nor activity - whether Global North or countries moving toward similar economic trajectories should be exempt from critical reflection on its suitability...
East Antarctic Ice Sheet (EAIS) dynamics are source of uncertainty in past and future sea level variations. The assessment the EAIS stability lies on a lack data, especially since Last Glacial Maximum (LGM). Although previous works focused LGM ice sheet front at shelf break or its modern position reached ~8 ka ago, these offshore marine records did not document post-LGM to Holocene fluctuations driven by climatic oceanic circulation In Adélie Land (136°E-142°E),...
Abstract In the Northern Hemisphere, most mountain glaciers experienced their largest extent in last millennium during Little Ice Age (1450 to 1850 CE, LIA), a period marked by colder hemispheric temperatures than Medieval Climate Anomaly (950 1250 MCA), which coincided with glacier retreat. Here, we present new moraine chronology based on 36 Cl surface exposure dating from Lyngmarksbræen glacier, West Greenland. Consistent other western Arctic, several advances millennium, first one at end...
Reconstructing the spatial and temporal response of mountain glaciers to rapid climate change in past provides access effects current change. Yet, variability glacier fluctuations is not fully understood. In this study, we focus on timing European Alps during Younger Dryas/Early Holocene (YD/EH) transition. an effort elucidate whether were synchronous period, present a new chronology Alpine Talèfre glacier, based 14 10 Be ages moraines roches moutonnées. The retreat was initiated mid‐YD...
ABSTRACT The abundant production of in situ cosmogenic 36 Cl from potassium renders measurements K‐rich rocks or minerals, such as K‐feldspars, potentially useful for precisely dating rock surfaces, either single‐nuclide multi‐nuclide studies, example combined with 10 Be quartz. However, significant discrepancies experimentally calibrated rates spallation ( P K‐sp ), referenced to sea‐level/high‐latitude (SLHL), limit the accuracy lithologies. We present a new calibration using which...
The objective of this work is to chronologically establish the origin different glacial and rock glacier complex landforms deposited by Héðinsdalsjökull (65°39′ N, 18°55′ W), in Héðinsdalur valley (Skagafjörður fjord, Tröllaskagi peninsula, central northern Iceland). Multiple methods were applied: geomorphological analysis mapping, reconstruction equilibrium-line altitude calculation, Cosmic-Ray Exposure dating (in situ cosmogenic 36Cl), lichenometric dating. results reveal that a...