نتایج جستجو برای: strike fault

تعداد نتایج: 71115  

2006
M. E. Pritchard M. Simons

[1] We use interferometric synthetic aperture radar, GPS, and seismic observations spanning 5 to 18 years to reveal a detailed kinematic picture of the spatiotemporal evolution of fault slip in a region corresponding to the 30 July 1995 Mw 8.1 subduction zone megathrust earthquake in northern Chile. In a single area, we document a complex mosaic of phenomena including large earthquakes, postsei...

Journal: :Science 2016
Junle Jiang Nadia Lapusta

Why many major strike-slip faults known to have had large earthquakes are silent in the interseismic period is a long-standing enigma. One would expect small earthquakes to occur at least at the bottom of the seismogenic zone, where deeper aseismic deformation concentrates loading. We suggest that the absence of such concentrated microseismicity indicates deep rupture past the seismogenic zone ...

2003
Tim J. Wright Zhong Lu Chuck Wicks

[1] The 23 October 2002 Nenana Mountain Earthquake (Mw 6.7) occurred on the Denali Fault (Alaska), to the west of the Mw 7.9 Denali Earthquake that ruptured the same fault 11 days later. We used 6 interferograms, constructed using radar images from the Canadian Radarsat-1 and European ERS-2 satellites, to determine the coseismic surface deformation and a source model. Data were acquired on asce...

2011
Eşen Basin

The Eşen Basin is a ca. 30 km long and 15 km wide, NNE-SSW trending young graben which is located in SW Turkey between the Isparta Angle and the Western Anatolian Extensional Province (Fig. 3). The basin has a key position in the south-western part of the Fethiye-Burdur Fault Zone (FBFZ), which is a presumed strike-slip zone with faults that run through numerous small cities and villages. There...

2012
M. R. Banks

BERRY, R.F. & BANKS, M.R., 1985 (31 :vii): Striations on minor faults and the structure of the Parmeener Super-group near Hobart, Tasmania. Pap. Proc. R. Soc. Tasm. 119:23-29. ISSN 0080-4071. University of Tasmania, Hobart, Tasmania, Australia, 7000. Fault striations were measured on 104 minor faults within the Parmeener Super-group near Hobart. The fault striations probably reflect the complex...

2007
K. V. Hodges L. W. McKenna

Neogene extension in the Death Valley region, SE California, has produced a variety of sedimentary basins. Diachronous movements on an array of strike-slip and normal fault systems have resulted in the uplift and preservation of older basins in modern ranges. One of the best exposed of these is the Nova basin on the western flank of the Panamint Mountains. The Nova basin includes over 2000 m of...

Journal: :Geological Society of America Bulletin 2021

Abstract Normal faults are commonly segmented along strike, with segments that localize strain and influence propagation of slip during earthquakes. Although the geometry can be constrained by fault mapping, it is challenging to determine seismically relevant a zone. Because histories, geometries, strengths linkages between normal fundamentally control rupture earthquakes, differences in segmen...

2013
Shengji Wei Don Helmberger Jean-Philippe Avouac

[1] A sequence of large strike-slip earthquakes occurred west of Sunda Trench beneath the Wharton Basin. First reports indicate that the main shock was extremely complex, involving three to four subevents (Mw> 8) with a maze of aftershocks. We investigate slip models of the two largest earthquakes by joint inversion of regional and teleseismic waveform data. Using the Mw7.2 foreshock, we develo...

Lat-Blukan district situated on N-Qazvin and western Alborz zone contains various extrusive and intrusive bodies with Eocene age. They are divided into three main facies that are volcaniclastic deposits (including tuff, lapilli tuff, agglomerate, tuffaceous sandstone and shale and also the carbonate intercalations), the trachyandesitic lava flows and subvolcanic bodies (including dioritic bodie...

Journal: :فیزیک زمین و فضا 0
مرتضی فتاحی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران سمیه رستمی مهربان دانشجوی کارشناسی ارشد‍‍ ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران مرتضی طالبیان استاد یار، سازمان زمین شناسی ایران عباس بحرودی استاد یار، سازمان زمین شناسی ایران، جیمز هالینگورت محقق، دپارتمان علوم زمین، ریچارد والکر استادیار، دپارتمان علوم زمین، دانشگاه آکسفورد، انگلیس

iran is one the most tectonically active parts of the world and regularly experiences earthquakes of both low and high magnitude. therefore, earthquake hazard assessment before any kind of building construction and for already built and populated area is essential. a vital first step in this type of study is to identify, map, and determine the activity of faults within a given region. investiga...

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