A5075939931- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Archaeological and Historical Studies
- Infectious Diseases and Tuberculosis
- Geological and Geophysical Studies
- Seismology and Earthquake Studies
- Seismic Imaging and Inversion Techniques
- Earthquake Detection and Analysis
- Seismic Waves and Analysis
- Flow Measurement and Analysis
University of Sciences and Technology Houari Boumediene
2009-2015
Cornell University
1990
Laboratoire de Géologie de l’École Normale Supérieure
1989
We seek to determine the mantle lid thickness of lithosphere and constrain mechanisms that are responsible for Cenozoic uplift Tibetan plateau located behind Himalaya collision zone western United States San Andreas transform/convergent plate boundary. Selected first P arrivals International Seismological Centre (ISC) data at distances less than 22° analyzed by two‐station method upper structure Basin Range (BR), Colorado Plateau (CP), Great Plains (GP) (TP). The presented as plots apparent...
First arrival times from regional distances (200–1200 km) in the western United States extracted International Seismological Centre (ISC) data set were inverted a tomographic study to map laterally varying Pn velocity structure of uppermost mantle (i.e., lid) and estimate crustal static delay at each seismograph station. Synthetic used evaluate resolution. Results correlate well with major tectonic features. We find low velocities (V < 7.9 km/s) centered Basin Range Province surrounded by...
The massive International Seismological Centre data set of the past 20 years and two‐station method are used to determine Pn velocities in mantle lid beneath Colorado plateau. In this event is located at distances where first arrival (2°–16°) path or very near azimuth pair crosses This technique a large extent minimizes hypocenter mislocation effect possible errors due variations crustal structure source, since only difference travel times two stations used. However, has few underlying...
Summary Selected Pn arrival times extracted from the ISC data, covering time period 1964 to present, are used in a non classical tomography scheme, map with an improved resolution, lateral velocity variations of mantle lid Western Mediterranean region and Gulf Cadiz. This reveals that all recent shallow large instrumental earthquakes (Mag ≥ 6.5) Maghreb Cadiz, have occurred areas where (a) is cold velocities larger than 7.95 km/sec, (b) significant occur around these areas, particular has...