Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Ryan Modrak"'
Publikováno v:
The Seismic Record, Vol 3, Iss 3, Pp 215-217 (2023)
Externí odkaz:
https://doaj.org/article/4e849a2a0d7d4c18997adf481f6fc093
Publikováno v:
The Seismic Record, Vol 3, Iss 2, Pp 168-170 (2023)
Externí odkaz:
https://doaj.org/article/dd14c017323b4d44840f2bcf9176122d
Publikováno v:
The Seismic Record, Vol 2, Iss 4, Pp 217-226 (2022)
The eruption of the Hunga Tonga–Hunga Ha’apai submarine volcano on 15 January 2022 produced a variety of geophysical responses, including a significant seismic signal. We study the seismic source process of this event by inverting for moment tens
Externí odkaz:
https://doaj.org/article/911697a984714a56853535601a19b567
Publikováno v:
Bulletin of the Seismological Society of America. 112:153-170
Short-period Rayleigh waves, Rg, provide strong constraints on the depth of shallow seismic events and are of interest for monitoring small explosions. Characterizing the seismic sources that generate Rg requires an understanding of how shallow crust
Autor:
Carl Tape, Nick Mortimer, Stephen Bannister, John Townend, Yoshihiro Kaneko, Bryant Chow, Ryan Modrak
Publikováno v:
Journal of Geophysical Research: Solid Earth. 127
We use earthquake-based adjoint tomography to invert for three-dimensional structure of the North Island, New Zealand, and the adjacent Hikurangi subduction zone. The study area, having a shallow depth to the plate interface below the North Island, o
Publikováno v:
Journal of Geophysical Research: Solid Earth. 127
Publikováno v:
Geophysical Journal International. 223:1461-1480
SUMMARY We develop and verify an automated workflow for full-waveform tomography based on spectral element and adjoint methods. We choose the North Island, New Zealand as a study area because of its high seismicity, extensive seismic network, and the
Publikováno v:
Geophysical Journal International
Geophysical Journal International, 2019, 219 (2), pp.1225-1236. ⟨10.1093/gji/ggz356⟩
Geophysical Journal International, 2019, 219 (2), pp.1225-1236. ⟨10.1093/gji/ggz356⟩
SUMMARY The uneven distribution of earthquakes and stations in seismic tomography leads to slower convergence of nonlinear inversions and spatial bias in inversion results. Including dense regional arrays, such as USArray or Hi-Net, in global tomogra
Autor:
Jeroen Tromp, Richard D. Miller, Harley Cudney, Dmitry Borisov, Mark Moran, Shelby L. Peterie, James A Smith, Ryan Modrak, Yao Wang, Steven D. Sloan
Publikováno v:
GEOPHYSICS. 84:B95-B105
We have applied time domain 2D full-waveform inversion (FWI) to detect a known 10 m deep wood-framed tunnel at Yuma Proving Ground, Arizona. The acquired seismic data consist of a series of 2D survey lines that are perpendicular to the long axis of t