Alexandra Robert

ORCID: 0000-0003-4934-080X
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About
Contact & Profiles
Research Areas
  • Geological and Geochemical Analysis
  • earthquake and tectonic studies
  • Geological and Geophysical Studies
  • High-pressure geophysics and materials
  • Landslides and related hazards
  • Geological Studies and Exploration
  • Geological and Tectonic Studies in Latin America
  • Geology and Paleoclimatology Research
  • Geochemistry and Geologic Mapping
  • Geological and Geophysical Studies Worldwide
  • Geological formations and processes
  • Remote Sensing and Land Use
  • Seismic Waves and Analysis
  • Yersinia bacterium, plague, ectoparasites research
  • Geotechnical and Geomechanical Engineering
  • Geomagnetism and Paleomagnetism Studies
  • Seismology and Earthquake Studies
  • Seismic Imaging and Inversion Techniques
  • Tree Root and Stability Studies
  • Geological Modeling and Analysis
  • Hydrocarbon exploration and reservoir analysis
  • Estrogen and related hormone effects
  • Vietnamese History and Culture Studies
  • Botany, Ecology, and Taxonomy Studies
  • Geophysics and Gravity Measurements

Université Toulouse III - Paul Sabatier
2015-2025

Institut de Recherche pour le Développement
2014-2025

Université de Toulouse
2014-2025

Centre National de la Recherche Scientifique
2014-2025

Géosciences Environnement Toulouse
2010-2019

Observatoire Midi-Pyrénées
2010-2019

Geociencias Barcelona
2015

Consejo Superior de Investigaciones Científicas
2014

Laboratoire de Physique de l'ENS
2009-2011

Université Laval
2005

Abstract The relationships between the serpentinized continental mantle in orogens, its geophysical signature at depth and hydrogen seepages are poorly understood. A petro‐physical modeling approach accounting for serpentinization shows that a large domain of (1,800 km 2 ) is present northern Pyrenees. reached maximum 40% during mid‐Cretaceous rifting, according to predicted temperature pressure. Although high‐temperature could have generated quantify Mesozoic, shallow inactive faulting...

10.1029/2024gc011804 article EN cc-by-nc-nd Geochemistry Geophysics Geosystems 2025-01-01

Abstract We present new crust and lithosphere thickness maps of the African mainland based on integrated modeling elevation geoid data thermal analysis. The approach assumes local isostasy, steady state, linear density increase with depth in temperature‐dependent lithospheric mantle. Results are constrained by a comprehensive compilation seismic Moho consisting 551 points published tomography models relative to LAB depth. crustal map shows N‐S bimodal distribution higher values cratonic...

10.1002/2016jb012972 article EN Journal of Geophysical Research Solid Earth 2016-06-24

Abstract. The large, shallow earthquakes at Northridge, California (1994), Chi-Chi, Taiwan (1999), and Wenchuan, China (2008), each triggered thousands of landslides. We have determined the position these landslides along hillslopes, normalizing for statistical bias. landslide patterns a co-seismic signature, with clustering ridge crests slope toes. A cross-check against rainfall-induced inventories seems to confirm that crest is specific seismic triggering as observed in previous studies....

10.5194/esurf-7-829-2019 article EN cc-by Earth Surface Dynamics 2019-09-02

The relationships between the serpentinised continental mantle in orogens, its geophysical signature at depth and hydrogen seepages are poorly understood. A petro-physical modelling approach accounting for serpentinisation shows that a large domain of is present northern Pyrenees. reached maximum 40% during mid-Cretaceous rifting, according to predicted temperature pressure. Although high-temperature could have generated quantify Mesozoic, shallow inactive faulting Northern Pyrenees make...

10.5194/egusphere-egu25-6373 preprint EN 2025-03-14

Abstract We present new crustal and lithospheric thickness maps for Central Eurasia from the combination of elevation geoid anomaly data thermal analysis. The results are strongly constrained by numerous previous based on seismological seismic experiments, tomographic imaging integrated geophysical studies. Our indicate that high topography regions associated with thickening is at a maximum below Zagros, Himalaya, Tien Shan Tibetan Plateau. stiffer continental blocks remain undeformed within...

10.1144/sp427.10 article EN Geological Society London Special Publications 2015-09-07

Abstract The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by occurrence unexpected 2008 M w 7.9 Wenchuan and 2013 6.6 Lushan earthquakes in central southern parts belt, respectively. These events revealed necessity better understanding long‐term geological evolution its effect on present dynamics crustal structure. New structural thermobarometric data offer comprehensive set paleotemperatures across P ‐ T estimates for...

10.1029/2018tc005005 article EN Tectonics 2018-11-14

The morphology of the Pyrenees is characterized by presence high-elevation, low-relief surfaces. origin these Lower-Miocene surfaces still debated. Two major interpretations have been proposed, both assuming that are remnants a single composite planation surface. first interpretation proposes this surface corresponds to peneplain developed near sea level before Late Miocene, subsequently uplifted and dissected. present-day therefore supposed rise from Miocene. In second interpretation,...

10.1016/j.crte.2015.08.005 article EN cc-by-nc-nd Comptes Rendus Géoscience 2015-12-08

Abstract. The large, shallow earthquakes at Northridge, California (1994), Chi-Chi, Taiwan (1999) and Wenchuan, China (2008) each triggered thousands of landslides. We have determined the position these landslides along hillslopes, normalizing for statistical bias. landslide patterns a co-seismic signature, with clustering ridge crests slope toes. A cross check against rainfall-induced inventories confirms that crest-clustering is specific to seismic-triggering. In our three study areas,...

10.5194/esurf-2018-82 preprint EN cc-by 2018-11-26

Methods and MetricsEvery cell in the landscape is defined by its normalized distance to river network |dst| expressed as:where dst dtp are flow distances nearest crest respectively.|dst| ranges from 0 for cells located floodplains 1 on crests.In any part of landscape, one can compute probability density function (PDF) a being at given over interval (0,1).The boundaries kept opened order keep PDF

10.5194/esurf-2018-82-supplement preprint EN 2018-11-26

Summary We would like to present our project that aims investigate the tectono-thermal evolution of Altiplano in Central Andes from basin orogenic scale and study interplay between Earth's deep surface processes convergent context. aim unravel sedimentologic, structural thermal hinterland basins order provide critical evidences for history style deformation region. In fact, these remain attractive frontier petroleum exploration. At scale, this projects compare regional cross-sections at...

10.3997/2214-4609.201413491 article EN Proceedings 2015-05-26
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