A5015913528- earthquake and tectonic studies
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Seismic Performance and Analysis
- Disaster Management and Resilience
- Earthquake Detection and Analysis
- Geological and Geochemical Analysis
- Structural Health Monitoring Techniques
- Infrastructure Resilience and Vulnerability Analysis
- Geological Formations and Processes Exploration
- Insurance and Financial Risk Management
- Flood Risk Assessment and Management
- Anomaly Detection Techniques and Applications
- Drilling and Well Engineering
- Risk and Safety Analysis
- Geophysics and Sensor Technology
- Methane Hydrates and Related Phenomena
- Disaster Response and Management
- Geological and Geophysical Studies
- Tropical and Extratropical Cyclones Research
- Wind and Air Flow Studies
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
Karlsruhe Institute of Technology
2014-2024
Heidelberg University
2020
Heidelberg Institute for Theoretical Studies
2020
Japan External Trade Organization
2014
Earth Science Institute of the Slovak Academy of Sciences
1986-2009
Karlsruhe University of Education
1999-2008
California Institute of Technology
2008
GFZ Helmholtz Centre for Geosciences
1993-2007
National Science and Technology Center for Disaster Reduction
2007
Heidelberg Academy of Sciences and Humanities
2007
INDEPTH geophysical and geological observations imply that a partially molten midcrustal layer exists beneath southern Tibet. This has been produced by crustal thickening behaves as fluid on the time scale of Himalayan deformation. It is confined south structurally imbricated Indian crust underlying Tethyan High Himalaya underlain, apparently, stiff mantle lid. The results suggest during Neogene underthrusting acted plunger, displacing middle to north while at same contributing this melting...
Marine seismic data recorded as a function of source‐receiver offset and traveltime are mapped directly to the domain intercept or vertical delay time horizontal ray parameter. This is plane‐wave decomposition based on beam forming wide‐aperture array determine automatically loci coherent reflection refraction events. In this computation, semblance, in addition required slowness parameter stack, found for linear X — T trajectories across subarrays. Subsequently, semblance used derive...
An important characteristic of seismicity is the distribution magnitudes earthquakes. Fluid injection in rocks, aimed to create enhanced geothermal systems (EGS), can sometimes produce significant seismic events (e.g., Majer et al., 2007). This rarely case hydraulic fracturing hydrocarbon reservoirs. However, any behavior triggering space and time controlled by process stress relaxation pore-pressure perturbation that was initially created at source. be approximated pressure diffusion...
The World Stress Map Project compiles a global database of contemporary tectonic stress information the Earth's crust. Early releases demonstrated existence first‐order (plate‐scale) fields controlled by plate boundary forces and second‐order (regional) major intraplate sources such as mountain belts zones widespread glacial rebound. 2005 release provides, for some areas, high data density that enables us to investigate third‐order (local) field variations, controlling them active faults,...
Abstract. The global CATDAT damaging earthquakes and secondary effects (tsunami, fire, landslides, liquefaction fault rupture) database was developed to validate, remove discrepancies, expand greatly upon existing databases; better understand the trends in vulnerability, exposure, possible future impacts of such historic earthquakes. Lack consistency errors other earthquake loss databases frequently cited used analyses a major shortcoming view authors which needed be improved upon. Over 17...
The number of earthquakes with high damage and losses has been limited to around 100 events since 1900. Looking at historical from 1900 onwards, we see that key (or 1% damaging earthquakes) have caused 93% losses. What is indeed interesting about this statistic within these events, secondary effects played a major role, causing 40% economic fatalities as compared shaking effects. Disaggregation effect demonstrating the relative influence direct earthquake in comparison tsunami, fire,...
Rural transportation networks are highly susceptible to geohazards such as earthquakes and landslides. Indirect losses can be severe because the breakdown of a network aggravates rescue, supply, other recovery activities. The operations logistics rural that under seismic risks must managed using limited resources specifically in developing countries. We propose methodology evaluate road strategies for restoring connectivity after blockages due earthquake-triggered This paper gives insight...
Abstract. At the end of October 2012, Hurricane Sandy moved from Caribbean Sea into Atlantic Ocean and entered United States not far New York. Along its track, caused more than 200 fatalities severe losses in Jamaica, The Bahamas, Haiti, Cuba, US. This paper demonstrates capability potential for near-real-time analysis catastrophes. It is shown that impact was driven by superposition different extremes (high wind speeds, storm surge, heavy precipitation) cascading effects. In particular...
Slab break‐off is a plate‐tectonic process which does not only return lithospheric material into the deeper mantle, but also has severe effects on surface movements and seismic hazard: slab‐pull induced seismicity reduced when subducted slab decouples from overlying crust. In Vrancea region (SE Carpathians), strong earthquakes frequently occur at intermediate depths (70–180 km) in laterally small volume, while crust shows low distributed seismicity. The stress pattern similar partitioning...
Non-linear teleseismic bodywave tomography with data of the 1999 CALIXTO field experiment (Carpathian Arc Lithosphere X-Tomography) in Romania provides high-resolution imaging upper-mantle structure. In this paper, we present relative P-wave velocity distribution lithosphere/asthenosphere system. Smearing from strong crustal anomalies into upper mantle is successfully suppressed by traveltime corrections an a priori 3-D regional model (see Martin et al. 2005, herein referenced as paper 1)....
The algorithm of the original Reflectivity Method has been vectorized and implemented on a CDC CYBER 205 computer. Calculation times are shortened by factor 20 to 30 compared with general purpose computer capacity several million floating point operations per second (MFLOP). rapid calculation synthetic seismograms for complex models, high frequency sources all offset ranges is provision modeling not only particular phases but whole observed wavefield. As an example we model refraction data...
Research Article| July 01, 1991 Crustal-scale structure of the southern Rhinegraben from ECORS-DEKORP seismic reflection data J. P. Brun; Brun 1Laboratoire de lectonique, Université Rennes, 35042 France Search for other works by this author on: GSW Google Scholar F. Wenzel 2Geophysikalisches Institut, Universität Fridericiana Karlsruhe, Hertzstrasse 16, D-7500 Karlsruhe 21, Germany Author and Article Information Publisher: Geological Society America First Online: 02 Jun 2017 Online ISSN:...
The accumulation of strong earthquakes with resembling source mechanisms in the Romanian Vrancea zone, SE Carpathians, allows for designing a simple, cheep and robust earthquake early warning (EEW) system Bucharest leading times about 25 s. A previously established scaling relation EEW predicts range from 1–2 s ten higher ground motion amplitude than maximum P‐wave acceleration measured epicentral area. Using additional weak data, we find that shaking is generally overestimated by this...
Knowledge of the present-day tectonic stress is essential for numerous applications in petroleum exploration and production civil mining engineering, such as improving stability boreholes tunnels enhancing through natural or induced fractures. The World Stress Map (WSM) Project a collaborative project between academia, industry, government that building comprehensive global database information to better understand state sources contemporary lithosphere (Figure 1).
The major challenge in the development of earthquake early warning (EEW) systems is achievement a robust performance at largest possible time.We have developed new method for EEW-called PreSEIS (Pre-SEISmic)that as quick methods that are based on single station observations and, same time, shows higher robustness than most other approaches.At regular timesteps after triggering first EEW sensor, estimates likely source parameters an using available information ground motions different sensors...
In this work we analyzed characteristics of aleatory variability with regard to intra-event and inter-event components in the prediction peak ground acceleration Taiwan spatial (site-to-site) correlation motion residuals.The are very important for an assessment seismic hazard loss regionally located building assets (portfolio) spatially distributed systems (lifelines) ShakeMap generation.The strong-motion database collected by TSMIP network Taiwan, which includes about 4650 records from 66...
The importance of critical infrastructures and strategic planning in the context extreme events, climate change urbanization has been underscored recently international policy frameworks, such as Sustainable Development Goals (SDGs), Sendai Framework for Disaster Risk Reduction 2015–2030 (UNISDR (United Nations/International Strategy Reduction) 2015), new Paris agreement (UNFCCC Nations — Convention on Climate Change) 2015) well New Urban Agenda (UN-HABITAT 2016). This paper outlines key...