نتایج جستجو برای: paleoseismology

تعداد نتایج: 84  

Journal: :Marine Geology 2022

Submerged fault ruptures generate earthquake-triggered mass flow deposits, which are extensively used as a tool in subaqueous paleoseismology. In tectonically active deep sedimentary basins, such the Sea of Marmara (SoM), these deposits defined turbidite-homogenite units (THUs), consisting essentially coarse basal part and an overlying homogeneous mud (homogenite). Detailed characterization THU...

Journal: :فیزیک زمین و فضا 0
رضا صحبتی دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک، دانشگاه تهران، ایران مرتضی فتاحی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک، دانشگاه تهران، ایران

a prerequisite to seismic hazard assessment is to have knowledge of historical and prehistorical earthquakes. to obtain such data, researchers have already practiced different methods including historical seismology, paleoseismology, and recently archaeoseismology. archaeoseismology is a multidisciplinary approach which ideally tries to find the age, epicenter, and magnitude of past earthquakes...

1999
Tsuneji Rikitake

In light of newly-acquired geophysical information about earthquake generation in the Tokai area, Central Japan, where occurrence of a great earthquake of magnitude 8 or so has recently been feared, probabilities of earthquake occurrence in the near future are reevaluated. Much of the data used for evaluation here relies on recently-developed paleoseismology, tsunami study and GPS geodesy. The ...

Journal: :Natural Hazards and Earth System Sciences 2022

Abstract. In slowly deforming intraplate tectonic regions such as the Alps only limited knowledge exists on occurrence of severe earthquakes, their maximum possible magnitude, and potential source areas. This is mainly due to long earthquake recurrence rates exceeding time span instrumental records historical documentation. Lacustrine paleoseismology aims at retrieving long-term continuous seis...

Journal: :فیزیک زمین و فضا 0
حمیده امینی دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران مرتضی فتاحی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک، دانشگاه تهران، ایران

optically stimulated luminescence (osl) is currently one of the most important dating methods. it dates the last exposure to sunlight. natural hazard evidences such as colluvial wedges, alluvial and fluvial sediments can be dated by osl. therefore, osl plays an important role in studies related to paleoseismology and tectonic activity, particularly in arid and semi- arid regions. the altai moun...

Journal: :Earth Surface Processes and Landforms 2021

The 20 May 2016 MW 6.1 Petermann earthquake in central Australia generated a 21 km surface rupture with 0.1 to 1 m vertical displacements across low-relief landscape. No paleo-scarps or potentially analogous topographic features are evident pre-earthquake Worldview-1 and Worldview-2 satellite data. Two excavations the expose near-surface fault geometry mixed aeolian-sheetwash sediment faulted o...

2002
Michele Cooke Susan Owen

s related to this work Cooke, Michele and Susan Owen, Comparing Mechanical and Geodetic Models of Los AngelesBasin Faults, SCEC Annual Meeting, Oxnard, 2001. ReferencesArgus, D. F., M. Heflin, A. Donnellan, F. Webb, D. Dong, K. Hurst, D. Jefferson, G. Lyzenga, M.Watkins, and J. Zumberge, Shortening and thickening of metropolitan Los Angeles measuredand inferred by using geodesy,...

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