A5007061034- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geological formations and processes
- earthquake and tectonic studies
- Landslides and related hazards
- High-pressure geophysics and materials
- Geological and Geophysical Studies
- Cryospheric studies and observations
- Hydrocarbon exploration and reservoir analysis
- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Geological Studies and Exploration
- Geochemistry and Geologic Mapping
- Methane Hydrates and Related Phenomena
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies Worldwide
- Pleistocene-Era Hominins and Archaeology
- Climate change and permafrost
- Groundwater flow and contamination studies
- Flood Risk Assessment and Management
- Paleontology and Stratigraphy of Fossils
- Geological Modeling and Analysis
- Evolution and Paleontology Studies
- Geological and Tectonic Studies in Latin America
GFZ Helmholtz Centre for Geosciences
2016-2025
University of Potsdam
2009-2024
Institut des Sciences de la Terre
2011-2024
Centre National de la Recherche Scientifique
2012-2024
Université Savoie Mont Blanc
2022-2024
Université Gustave Eiffel
2011-2024
Université Grenoble Alpes
2010-2024
Institut de Recherche pour le Développement
2013-2024
Géosciences Rennes
2005-2023
Université de Rennes
2005-2023
We present simulations of large‐scale landscape evolution on tectonic time scales obtained from a new numerical model which allows for arbitrary spatial discretization. The method makes use efficient algorithms the field computational geometry to compute set natural neighbours any irregular distribution points in plane. are used solve geomorphic equations that include erosion/deposition by channelled flow and diffusion. algorithm has great geometrical flexibility, it possible problems...
Research Article| August 01, 1989 A physical explanation of the relation between flank uplifts and breakup unconformity at rifted continental margins Jean Braun; Braun 1Department Oceanography, Dalhousie University, Halifax B3H 4J1, Canada Search for other works by this author on: GSW Google Scholar Christopher Beaumont Geology (1989) 17 (8): 760–764. https://doi.org/10.1130/0091-7613(1989)017<0760:APEOTR>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to...
Summary An approach is presented for interpolating a property of the Earth (for example temperature or seismic velocity) specified at series ‘reference’ points with arbitrary distribution in two three dimensions. The method makes use some powerful algorithms from field computational geometry to efficiently partition medium into ‘Delaunay’ triangles (in 2-D) tetrahedra 3-D) constructed around irregularly spaced reference points. can then be smoothly interpolated anywhere using known as...
We employ a numerical surface processes model to study the controls on postbreakup landscape development and denudational history of southeast African margin. Apatite fission track data, presented in companion paper, suggest that Drakensberg Escarpment formed by rapid river incision seaward preexisting drainage divide, located close its present position, subsequently retreated at rates only ∼100 m m.y. −1 . Numerical modeling results support such scenario show prebreakup topography margin...
ABSTRACT The Earth's topography is shaped by surface processes that operate on various scales. In particular, river control landscape dynamics over large length scales, whereas hillslope the smaller This scale separation challenges numerical treatments of evolution use space discretization. Large grid spacing cannot account for water divides drainage area competition, and erosion rate slope distribution. Small properly accounts divide computationally inefficient when studying domains. Here...
ABSTRACT The terrigeneous sediment budget of passive margin basins records variations in continental relief triggered by either deformation or climate. Consequently, it becomes a major challenge to determine accumulation histories large number found various geodynamic contexts. In this study, we developed GIS‐based method the at scale whole basin (from upstream onlap most distal deepest marine deposits) and associated uncertainties. volume sediments preserved for each time interval was...
The Himalayan range is commonly presented as largely laterally uniform from west to east.However, geological structures, topography, precipitation rate, convergence rates, and low-temperature thermochronological ages all vary significantly along strike.Here, we focus on the interpretation of data sets in terms along-strike variations geometry kinematics main crustal detachment underlying Himalaya: Main Thrust (MHT).We report new apatite fission track (AFT) collected north-south transects...
Abstract We present new sedimentary flux data confirming that a large pulse of erosion affected the Southern African Plateau in Late Cretaceous and is likely to be related major uplift episode plateau. This short phase (i.e., less than 30 Myr duration) has commonly been difficult reconcile with mantle origin for plateau anomalous uplift: given its size, rise superplume have lasted much longer. Here we demonstrate by using simple model fluvial tilting continent as it rides over wide dynamic...
The stream power law model has been widely used to represent erosion by rivers but does not take into account the role played sediment in modulating and deposition rates. Davy Lague (2009, https://doi.org/10.1029/2008JF001146 ) provide an approach address this issue, it is computationally demanding because local balance between depends on flux resulting from net upstream erosion. Here, we propose efficient (i.e., O ( N implicit) method solve their equation. This means that, unlike other...
Due to the challenges in upscaling daily climatic forcing geological time, physically realistic models describing how rainfall drives fluvial erosion are lacking. To bridge this gap between short‐term hydrology and long‐term geomorphology, we derive a theoretical framework for rates driven by climate integrating an established stochastic‐mechanistic model of into threshold‐stochastic formulation stream power. The hydrological theory provides equations streamflow probability distribution as...
The birth and expansion of continental plateaus exert a strong control on our planet's climate the distribution evolution its biodiversity. It has been proposed that Tibetan Plateau steadily growing by southward expansion. Here we demonstrate shape southeastern margin plateau remained unchanged for last 10 Myr despite vast amounts exhumation. Our finding is based new, high-resolution thermochronological dataset from deep gorges Salween Mekong rivers, which interpret using physics-based model...
We propose a simple parameterization of the transition between dislocation creep and grain‐size‐sensitive under conditions characteristic lithospheric mantle derived from results laboratory experiments on olivine‐rich rocks. Through numerical modeling linear stability analysis, we determine which this takes place potentially leads to strain localization. pay particular attention effect cooling rate are likely be dominant parameters in actively deforming tectonic areas. conclude that at...
Research Article| February 01, 2000 Thermochronological analysis of the dynamics Southern Alps, New Zealand Geoffrey E. Batt; Batt 1Research School Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Jean Braun; Braun Barry P. Kohn; Kohn 2Australian Geodynamics Cooperative Centre, Department La Trobe Melbourne, Victoria 3083, Ian McDougall GSA Bulletin (2000) 112 (2): 250–266....