On 9 January 1857, a large earthquake of magnitude 7.9 occurred on the San Andreas fault, with rupture initiating at Parkfield in central California and propagating in a southeasterly direction over a distance of more than 360 km. Such a unilateral rupture produces significant directivity toward the San Fernando and Los Angeles basins. Indeed, newspaper reports of sloshing observed in the Los A...

Well-constrained case studies of transient landscape response to external forcing are needed to improve our understanding of erosion processes in tectonically active mountain belts. The Peninsular Ranges portion of the San Jacinto fault zone (SJFZ) is an excellent location for such a study because it displays pronounced geomorphic disequilibrium resulting from initiation of a major strike-slip ...

Geodesy shows that ?7 mm/yr of dextral shear is accumulating across the Central Walker Lane in absence through-going strike-slip faults. To better understand how this accommodated, we describe and quantify patterns slip rates active faults extending between Lake Tahoe basins. Lidar data geomorphic mapping show linear fault traces stepping geometries consistent with accommodation oblique-slip mo...

The Gulf of Suez area represents one the most famous tectonic structures in Red Sea, with a long history low-, moderate-, and high-intensity earthquakes. This paper provides geomorphic analytics fault-initiated mountain front sinuosity (Smf) stream gradients that cross various segments fault scarps. results from index valley floor width to height ratio (Vf) suggest different levels activities a...

Abstract Nearby faults interact through stress changes induced by fault slip and viscoelastic flow. The process is, however, often elusive can be geometry-dependent time-variant. Here, we combine geodetic field observations to characterize the interaction of two head-to-head, conjugate in eastern Taiwan during 2022 Chihshang earthquake sequence. We map coseismic on Central Range dynamically-tri...

Swarms in Central Utah are situated the complex transition between Basin and Range (BR) province Colorado Plateau. Transecting transverse structures, volcanic deposits, hydrothermal systems complicate extensional BR horst graben structures provide a multitude of plausible triggering mechanisms. Revisiting catalog University Seismograph Stations (1981–2022), we analyze spatio-temporal patterns c...

It is believed that Greater India migrated from the southern hemisphere, collided with Gondwanaland, Angaraland and Cathaysia, thereby closing an intervening oceanic Tethys along the Indus-Yarlung-Tsangpo Suture Zone (IYTSZ).The suture zone is placed along the Chaman Fault in the Baluchistan-Afghanistan area in the west, and the Indus-Yarlung-Tsangpo in the north, whereas along the east from Th...

Article history: Received 7 August 2015 Received in revised form 21 January 2016 Accepted 22 January 2016 Available online 23 January 2016 In order to better understand the activity of the Akşehir normal fault in SW Turkey and the associated seismic hazard, we investigated the tectonic geomorphology of a 60-km stretch of the 100-km-long Akşehir fault block. The fault can be separated into seven...

Abstract An unusually damaging Mw 4.9 earthquake occurred on November 11, 2019 in the south east of France within lower Rhône river valley, an industrial region that hosts several operating nuclear power plants. The hypocentre this event at exceptionally shallow depth about 1 km. Here we use far-field seismological observations to demonstrate rupture properties are consistent with those commonl...

in this paper, an advanced formulation of the spectral finite element method (sfem) is presented and applied in order to carry out site response analysis of 2d topographic structures subjected to vertically propagating incident in-plane waves in time-domain. the accuracy, efficiency and applicability of the formulation are demonstrated by solving some wave scattering examples. a numerical param...