A5048562088- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Oceanographic and Atmospheric Processes
- Climate variability and models
- Complex Systems and Time Series Analysis
- Heavy metals in environment
- Marine and Offshore Engineering Studies
- Time Series Analysis and Forecasting
- Chaos control and synchronization
- Arctic and Antarctic ice dynamics
- Marine and coastal ecosystems
- Environmental and Social Impact Assessments
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Coastal and Marine Management
- Geochemistry and Geologic Mapping
- Rock Mechanics and Modeling
- Geophysics and Gravity Measurements
- Ocean Acidification Effects and Responses
- Seismic Performance and Analysis
- Aeolian processes and effects
- Marine and coastal plant biology
- Groundwater and Isotope Geochemistry
Office Français de la Biodiversité
2021-2023
Laboratoire de Géologie de l’École Normale Supérieure
2020-2023
Université Paris Sciences et Lettres
2021-2023
French National Agency for Water and Aquatic Environments
2021-2023
École Normale Supérieure - PSL
2020-2023
Centre National de la Recherche Scientifique
2006-2022
Laboratoire de Physique de l'ENS
2020
California Institute of Technology
2017-2019
University of Cambridge
2015-2018
Ifremer
2005-2009
Shelf and coastal seas are regions of exceptionally high biological productivity, rates biogeochemical cycling immense socio-economic importance. They are, however, poorly represented by the present generation Earth system models, both in terms resolution process representation. Hence, these models cannot be used to elucidate role ocean global cycles effects change (both direct anthropogenic climatic) having on them. Here, we a for simulating all around world (the Global Coastal Ocean...
Abstract The 2016 Kumamoto earthquake sequence occurred on the Futagawa–Hinagu fault zone near Aso volcano Kyushu island. was initiated with two major ( M w ≥ 6.0) foreshocks, and mainshock = 7.0 ) 25 h after second foreshock. We combine GPS, strong motion, synthetic aperture radar images, surface offset data in a joint inversion to resolve kinematic rupture process of coseismic displacement foreshocks. results reveal unilateral for involving sequential four asperities. slip area foreshocks...
In this study, we model geodetic strain accumulation along the Cascadia subduction zone between 2007.0 and 2017.632 using position time series from 352 continuous GPS stations. First, use secular linear motion to determine interseismic locking megathrust. We two end member models, assuming that megathrust is either a priori locked or creeping, which differ essentially trench where inversion poorly constrained by data. case, significant of updip coastline needed. The downdip limit portion...
Abstract Megathrust earthquakes tend to be confined fault areas locked in the interseismic period and often rupture them only partially. For example, during 2015 M 7.8 Gorkha earthquake, Nepal, a slip pulse propagating along strike unzipped bottom edge of portion Main Himalayan Thrust (MHT). The lower produced dominant high‐frequency (>1 Hz) radiation seismic waves. We show that similar partial ruptures occur spontaneously simple dynamic model earthquake sequences. is governed by standard...
Slow earthquakes result from deterministic chaos and show predictability horizon time of the order days to weeks.
Recent studies have shown that the Himalayan region is under threat of earthquakes magnitude nine or larger. These estimates are based on comparisons geodetically inferred moment deficit rate with seismicity region. However, these did not account for physics fault slip, specifically influence frictional barriers earthquake rupture dynamics, which controls extent and therefore large earthquakes. Here we combine an improved probabilistic estimate results from dynamic models cycle to more fully...
Research Article| November 28, 2017 Seismic and Aseismic Moment Budget Implication for the Potential of Parkfield Segment San Andreas Fault Sylvain Michel; Michel aBullard Laboratories, Department Earth Sciences, University Cambridge, Madingley Road, Cambridge CB3 0EZ, United Kingdom, Sylvain_michel@live.freAlso at Geology Planetary California Institute Technology, 1200 E. Boulevard, Pasadena, 91125. Search other works by this author on: GSW Google Scholar Jean‐Philippe Avouac; Avouac...
Abstract Ten-year-long output series from a general circulation model forced by daily realistic winds are used to analyze the annual cycle of Equatorial Undercurrent (EUC) in Atlantic Ocean. Two well-defined transport maxima found: One, present during boreal summer and autumn central part basin, is generally recognized regarded as near-equilibrium response equatorial easterly trades that culminate this period. Another one, most pronounced near western boundary, occurs April–May when relax....
The temperature evolution over the past 40 years in Bay of Biscay (North-East Atlantic) is investigated from an situ data analysis, completed with a satellite SST (Sea Surface Temperature) analysis last 20 years. dataset interannual version BoByClim climatology, covering area 10-km horizontal resolution and 5-m vertical step. European COastral Sea Operational Observing Forcast System Program (ECOOP) daily IBIROOS (Iberian-Biscay-Irish Sea) 4-km resolution. study (43°N-50°N/12°W-1°W) extends...
Abstract The Parkfield segment of the San Andreas Fault (SAF) sits at transition between locked Cholame to South and SAF creeping North. hosts regular 6 earthquakes followed by postseismic deformation. Recent studies based on geodetic data have highlighted spatial temporal variations aseismic slip rate in addition along this section fault. We combine Global Navigation Satellite Systems (GNSS) seismicity over 2006–2018 period detail a comprehensive picture transient events. produce catalog...
Abstract The 700‐km‐long Chaman fault (CF) marks the western edge of plate boundary between India and Eurasia. Although global models predict 2.3–3.6 cm/yr left‐lateral motion both plates, is known to have hosted few earthquakes in historical times. Recent geodetic measurements attested presence aseismic slip locally. To detail interplay fast slow along CF, we build three Interferometric Synthetic‐Aperture Radar time series ground deformation covering whole length over 5 years (2014–2019)....
Abstract. A bi-dimensional mixed layer model (MLM) of the global ocean is used to investigate sea surface salinity (SSS) balance and variability at daily seasonal scales. Thus a simulation over an average year performed with climatological forcing fields. The dataset combines air-sea fluxes from meteorological model, geostrophic currents satellite altimeters in situ data for river run-offs, deep temperature salinity. based on "slab layer" formulation, which allows many simplifications...
An integral model of the oceanic mixed layer is used to estimate sea surface salinity anomalies caused by atmospheric heat fluxes, evaporation-precipitation budget, wind friction and geostrophic circulation. Input parameters are air-sea stress, temperature from a meteorological velocity derived several altimeters measurements. The tested using daily climatological forcing fields, in terms amplitude spatial distribution response. horizontal transport variations first cause variability, but...
ABSTRACT The northern Chile region of the Nazca subduction zone ruptured in an Mw∼8.5–9.0 earthquake 1877, which induced a tsunami. various magnitude estimates this event are based on evaluation historical records, seismic intensities, and/or tide gauge information; however, its actual along-strike extent is debated. Based geodetic data, previous studies have suggested that has potential for Mw 8.2–8.8 event. We re-evaluate region, accounting buildup rate moment deficit along megathrust,...