Results 101 to 110 of about 10,380 (227)
Hypocenter for the 1979 Imperial Valley Earthquake
Geophysical Research Letters, 1982 Using P‐and S‐wave arrival times with the laterally varying P‐wave velocity structure derived from analysis of a refraction survey of the Imperial Valley, a hypocenter is ascertained for the October 15, 1979, Imperial Valley earthquake:Latitude 32° 39.50′N,Longitude 115° 19.80′W,Depth 8.0 km,Time 23:16:54.40 GMT.
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Partial Ruptures, Cascading Multi‐Fault Ruptures, and Aftershocks in 2D Random Fault Network
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The Gutenberg‐Richter law for the distribution of earthquake magnitude and the Omori law for the decay of aftershocks are two universal laws in seismicity. Although numerical models have been developed to reproduce these laws, they sometimes produce many more foreshocks and fewer aftershocks than observed.
So Ozawa
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Earthquake Hypocenter data base available
Eos, Transactions American Geophysical Union, 1971 A magnetic tape containing hypocenter data for 40,000 earthquakes from January 1961 through August 1970 is now available from NOAA's National Geophysical Data Center. These data were used by the National Ocean Survey (formerly Coast and Geodetic Survey) to produce World and Regional Seismicity Maps.
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Laboratory experiments and theoretical models suggest that earthquakes are preceded by extended nucleation phases, perhaps by slow but accelerating slip. However, such nucleation phases are hard to observe before natural earthquakes. Here we identify clustered foreshock sequences that could be nucleation signatures.
Hui Huang, Jessica C. Hawthorne
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, 2018 Functional data typically contains amplitude and phase variation. In many data situations, phase variation is treated as a nuisance effect and is removed during preprocessing, although it may contain valuable information.
Gabriel, Alice-Agnes +3 more
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Trench‐Breaching Rupture of the 2025 Mw 8.8 Kamchatka Earthquake and How It Repeats the 1952 Event
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The 29 July 2025 Mw 8.8 Kamchatka earthquake generated a trans‐Pacific tsunami. The hypocenter was nearly at the same location as the 1952 great earthquake (Mw 8.8–9.0). Determining whether the 2025 rupture reached the trench and how it relates to the 1952 event is crucial for understanding slip behavior along the Kamchatka subduction zone. We
Yifan Zhu, Chao An, Han Yue
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Вестник Дагестанского государственного технического университета: Технические науки, 2019 Objectives The purpose of the study is to obtain an expression for determining the coordinates of the earthquake focus using the ellipsoid method, as well as testing the possibility of using the method using the figures of the second order of the ...
T. G. Aslanov, U. A. Musaeva
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The July 2025 Kamchatka earthquake (Mw 8.8) generated Pacific‐wide tsunamis. Inversion of 40 DART bottom pressure records revealed a large (∼9 m) slip at 200–400 km southwest of the epicenter. This model reproduces the local geodetic data, and is similar to other finite fault models based on teleseismic and geodetic data. Inversion of the tide
Yushiro Fujii, Kenji Satake
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INTERPRETING FAULT DYNAMICS IN TERMS OF HYPOCENTER RELOCATION AND FAULT CHARACTERIZATION
Геодинамика и тектонофизикаSoutheast and Central Sulawesi are the areas characterized by high tectonic activity due to the presence of the active Matano fault. The seismicity along this fault is high. However, the initial hypocenter often deviates from the fault’s trend line, thus
M. F. I. Massinai +5 more
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Shallow Creep in the Leaky Stress Shadow of Locked Zones of Subduction Megathrust
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract In some subduction zones such as Nankai, creeping of the shallow part of the megathrust in the stress shadow of deeper locked zones is detected by seafloor geodetic measurements and/or reflected by slow earthquakes (SEQs). Here we explain that shallow creep occurs in the stress shadow for two reasons: (a) prolonged afterslip and (b) a leaky ...
Kelin Wang, Yajing Liu, Tianhaozhe Sun
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