A5041835451- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Seismology and Earthquake Studies
- Landslides and related hazards
- Earthquake Detection and Analysis
- Geological and Geophysical Studies
- High-pressure geophysics and materials
- Geological and Geophysical Studies Worldwide
- Geological formations and processes
- Cryospheric studies and observations
- Seismic Waves and Analysis
- Geochemistry and Geologic Mapping
- Remote Sensing and Land Use
- Marine and environmental studies
- Pleistocene-Era Hominins and Archaeology
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Geoscience and Mining Technology
- Geophysics and Gravity Measurements
- Geochemistry and Geochronology of Asian Mineral Deposits
- Archaeological Research and Protection
- Geochemistry and Elemental Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
Université de Strasbourg
2015-2025
Centre National de la Recherche Scientifique
2015-2025
Institut Terre & Environnement de Strasbourg
2021-2025
Terre des Hommes
2022-2025
Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)
2021-2024
Institut des Sciences de la Terre
2019-2024
École & Observatoire des Sciences de la Terre
2003-2024
Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé
2024
Institut de physique du globe de Paris
2005-2023
Université Côte d'Azur
2022
Late Pleistocene–Holocene sinistral slip-rates on several segments of the Kunlun Fault in northeastern Tibet have been determined. These determinations are based measured displacement alluvial surfaces whose surface ages were determined by cosmogenic 26Al and 10Be dating quartz pebbles, 14C charcoal. In west, at three sites along Xidatan–Dongdatan segment fault, near 94uE, terrace riser offsets ranging from 24 to 110 m, with ∼1800 ∼8200 yr, yield a mean left-lateral slip-rate 11.7±1.5 mm...
Abstract The return times of large Himalayan earthquakes are poorly constrained. Despite historical devastation cities along the mountain range, definitive links between events and specific segments Main Frontal Thrust (MFT) not established, paleoseismological records have documented occurrence several similar at same location. In east central Nepal, however, recently discovered primary surface ruptures that megathrust in A.D. 1255 1934 associated with flights tectonically uplifted terraces....
On February 6, 2023, southern Türkiye was struck by two large earthquakes at 01:17 UTC (Mw=7.8, Pazarcık, Kahramanmaraş) and 10:30 (Mw = 7.6, Elbistan, Kahramanmaraş), causing severe damage the complex junction of Dead Sea Fault (DSF), Cyprus Arc East Anatolian Zone (EAFZ). The ruptures propagated along several known strands southwestern termination EAFZ, main Pazarcık Karasu valley faults, Çardak-Sürgü fault. Here we present high-resolution mapping entire coseismic surface rupture an...
Research Article| August 01, 1998 Holocene left-slip rate determined by cosmogenic surface dating on the Xidatan segment of Kunlun fault (Qinghai, China) J. Van der Woerd; Woerd 1Laboratoire de Tectonique, Mécanique la Lithosphère, URA 1093, Institut Physique du Globe Paris, 4 Place Jussieu, 75252 Paris Cedex 05, France2Institute Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, California 94550 Search for other works this author on: GSW Google Scholar F....
The Mw 7.8 Kokoxili earthquake of 14 November 2001, which ruptured a 450-km-long stretch the sinistral Kunlun strike-slip fault, at northeastern edge Tibet plateau, China, ranks as largest event ever recorded instrumentally in Asia. Newly available high-resolution satellite HRS images (pixel size 1 m) acquired months following proved powerful tool to complement field investigations and produce most accurate map date coseismic displacements along central Kusai Hu segment rupture. rupture...
Beryllium-10 surface exposure dating of offset moraines on one branch the Karakorum Fault west Gar basin yields a long-term (140- to 20-thousand-year) right-lateral slip rate approximately 10.7 +/- 0.7 millimeters per year. This is 10 times larger than that inferred from recent InSAR analyses ( 1 3 year) span 8 years and sample all branches fault. The difference in slip-rate determinations suggests large fluctuations may exist over centennial or millennial time scales. Such would be...
To better constrain the ongoing rates of deformation in northern Tibet, ages fluvial and glacial geomorphic markers left‐laterally displaced by Altyn Tagh Fault have been determined radiocarbon 10 Be‐ 26 Al cosmic ray exposure dating. Two sites were investigated: Cherchen He Sulamu Tagh, both near Tura (∼37.6°N, 86.6°E). The are geomorphologically distinct with dominated processes action. Nine offsets ranging from 166 to 3660 m between 6 113 ka yield an average slip rate 26.9 ± 6.9 mm/yr....
Millennial slip rates have been determined for the Altyn Tagh fault (ATF) at three sites near Aksay (∼94°E) in northeastern Tibet by dating fluvial channels and terrace riser offsets with radiocarbon 10 Be‐ 26 Al surface exposure dating. Up to nine main surfaces are defined on basis of morphology, elevation, The abandonment age some is constrained dating, which typically coincides youngest cosmogenic ages a particular surface. Older taken represent duration emplacement. Cumulative range from...
The 14 November 2001, M w = 7.8, Kokoxili earthquake ruptured more than 400 km of the westernmost stretch left‐lateral Kunlun fault in northern Tibet. Interferometric synthetic aperture radar data from descending orbits, along four adjacent tracks covering almost entire rupture, and 1‐m pixel Ikonos satellite images are used to map rupture geometry surface displacements produced by event. Interferograms then inverted solve for coseismic slip on at depth. show that connected Heituo fault,...
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Abstract The aim of the SI-Hex project (acronym for « Sismicité Instrumentale de l’Hexagone ») is to provide a catalogue seismicity metropolitan France and French marine economic zone period 1962–2009 by taking into account contributions various seismological networks observatories from its neighbouring countries. has been launched jointly Bureau Central Sismologique Français (CNRS-University/BCSF) Laboratoire Détection et Géophysique (CEA-DAM/LDG). One main motivations end user with best...
A long‐term slip‐rate is derived from concordant 10 Be, 26 Al and 14 C dating of cumulative offsets along much the length Kunlun Fault. Values at 6 sites indicate uniform slip (11.5±2.0 mm/yr) since ∼40 kyr BP. This relatively high rate corresponds to a first‐order discontinuity in Asian crustal velocity field. M∼8 M∼7.5 earthquakes on 2 segments fault recur with characteristic (∼10±2 m 4.4±0.4 m) every ∼850 ∼420 yrs, respectively.
Fieldwork along the western Haiyuan fault, where it cuts young glacial landforms in Leng Long Ling range (Qinghai, northeastern Tibet), yields new constraints on its long‐term left‐slip rate. Our mapping near 101.85°E, based aerial photographs, 1/50,000 topographic maps, and SPOT images, shows valley edges lateral moraines offset ∼200 m by fault. Quartz‐rich cobbles were sampled top of one moraine for situ 10 Be 26 Al cosmogenic nuclide dating. Among 12 dated samples, 6 oldest show ages...
Although the M=w8.7, 1950 Assam earthquake endures as largest continental ever recorded, its exact source and mechanism remain contentious. In this paper, we jointly analyze spatial distributions of reappraised aftershocks landslides, provide new field evidence for hitherto unknown surface rupture extent along Mishmi Abor Hills. Within both mountain fronts, relocated fresh landslide scars spread over an area ≈330 km by 100 km. The former are more abundant in Hills while later mostly affect...
Abstract The presence of ~NS‐trending rifts within the Tibetan Plateau attests that it is undergoing ~EW extension. In southern Tibet, total extension rate, distributed across seven main over a distance ~1,000 km, has been inferred to amount about half shortening rate Himalayas. Quantifying late Quaternary rates largest rift (Yadong‐Gulu [YGR]) important understand deformation and discuss high plateau evolution during later stages continental collision. We performed 10 Be surface‐exposure...
SUMMARY The brutal onset of seismicity offshore Mayotte island North the Mozambique Channel, Indian Ocean, that occurred in May 2018 caught population, authorities and scientific community off guard. Around 20 potentially felt earthquakes were recorded first 5 d, up to magnitude Mw 5.9. had little pre-existing knowledge seismic activity region due poor network coverage. During 2019, MAYOBS/REVOSIMA seismology group was progressively built between four French research institutions improve...
The western part of the Tanghe Nan Shan range southwest Subei (western Gansu, China) is presently growing on thrust ramps splaying from left‐lateral Altyn Tagh Fault. Late Cenozoic thrusting has folded and sliced Oligocene‐Miocence red beds into an imbricate wedge, capped by warped uplifted Quaternary terraces that form a 2‐ to 5‐km‐wide ledge, north steeply faceted front. Seismic scarps 1.5 4.5 m high cut young fans along outer thrusts. Carbon 14 dating organic remains collected strath...
The 14 November 2001, M w = 7.8 Kunlunshan earthquake ruptured the westernmost part of Kunlun Fault, northern Tibetan Plateau. main segment affected by this event was Kusaihu segment. Field investigations allowed us to constrain length, width, and coseismic horizontal displacement distribution rupture zone. mapped surface zone starts from 90.257°E in west ends at 94.795°E east with a total length 426 km. It consists three sections, western strike‐slip section, transtensional eastern section....