Results 1 to 10 of about 34,992 (234)

Neural Network Nodal Ambient Noise Tomography of a transient plumbing system under unrest, Vulcano, Italy [PDF]

Nature Communications
Volcanic risk escalates significantly during unrest. In late 2021, the Italian island of Vulcano entered into a phase of unrest featuring Very Long Period seismic events, which are considered to be markers of magma and gas flowing across the volcanic ...
Douglas Sami Stumpp, Iván Cabrera-Pérez, Geneviève Savard, Tullio Ricci, Mimmo Palano, Salvatore Alparone, Andrea Ursino, Federica Sparacino, Anthony Finizola, Francisco Muñoz Burbano, María-Paz Reyes Hardy, Joël Ruch, Costanza Bonadonna, Matteo Lupi   +13 more
doaj   +2 more sources

Review on body-wave tomography for seismic velocity and anisotropy

地球与行星物理论评, 2022
Seismic tomography, also named Earth CT, uses the observational seismic data to invert for the deep structures in the Earth. Body-wave travel-time tomography is one of the most popular and robust methods; it has revealed clear Earth structures and ...
Zhouchuan Huang
doaj   +1 more source

Review of progress in seismic attenuation tomography

地球与行星物理论评, 2022
Global and regional seismic attenuation models reveal anelastic heterogeneous structures in the earth, which shed new light on the temperature, melt and volatile fraction of Earth's interior, as well as the geodynamic processes and source focal ...
Andy Dai, Hao Shan, Kun Meng, Xueyang Bao   +3 more
doaj   +1 more source

Multiple surface wave tomography methods and their applications to the Tibetan Plateau

地球与行星物理论评, 2023
Surface wave tomography is a widely used geophysical method to measuring seismic velocity and anisotropy in the crust and upper mantle. This paper briefly reviewed the history of surface wave tomography, and summarized the principles and advantages of ...
Lun Li, Chen Cai, Yuanyuan Fu, Hongjian Fang   +3 more
doaj   +1 more source

Multi-Scale Seismic Measurements for Site Characterization and CO₂ Monitoring in an Enhanced Oil Recovery/Carbon Capture, Utilization, and Sequestration Project, Farnsworth Field, Texas

Energies, 2023
To address the challenges of climate change, significantly more geologic carbon sequestration projects are beginning. The characterization of the subsurface and the migration of the plume of supercritical carbon dioxide are two elements of carbon ...
George El-kaseeh, Kevin L. McCormack
doaj   +1 more source

Reflection tomography by depth warping: a case study across the Java trench [PDF]

Solid Earth, 2022
Accurate subsurface velocity models are crucial for geological interpretations based on seismic depth images. Seismic reflection tomography is an effective iterative method to update and refine a preliminary velocity model for depth imaging.
Y. Xia, D. Klaeschen, H. Kopp, H. Kopp, M. Schnabel   +4 more
doaj   +1 more source

Waveform Energy Focusing Tomography With Passive Seismic Sources

Frontiers in Earth Science, 2022
By taking advantage of the information carried by the entire seismic wavefield, Full Waveform Inversion (FWI) is able to yield higher resolution subsurface velocity models than seismic traveltime tomography.
Yueqiao Hu, Junlun Li, Junlun Li, Haijiang Zhang, Haijiang Zhang   +4 more
doaj   +1 more source

Multiscale seismic tomography [PDF]

Geophysical Journal International, 2001
Summary Seismic traveltime tomography is commonly discretized by a truncated expansion of the pursued model in terms of chosen basis functions. Whether parametrization affects the actual resolving power of a given data set as well as the robustness of the resulting earth model has long been seriously debated.
Chiao, Ling-Yun, Kuo, Ban-Yuan
openaire   +1 more source

Main Sections of the Earth Crust and Upper Mantle of the Greater Caucasus by New Technologies. 2. Deep Seismic Sounding, Micro Seismic Sounding

Геофизический журнал, 2016
The work reviews the possibility of application of the seismic tomography method for processing the materials of deep seismic sounding (DSS). It presents comparative results by various softwares as GeoGiga Seismic PRO 7.0 (Canada), XTomo-LM (St ...
S. A. Ghonghadze, T. L. Chelidze, P. Sh. Mindeli, N. I. Ghlonti, J. K. Kiria, O.V. Yavolovskaya   +5 more
doaj   +1 more source

Ambient Noise Attenuation Tomography Reveals an Asymmetric Damage Zone Across San Jacinto Fault Near Anza, California

Geophysical Research Letters, 2022
We perform seismic attenuation tomography of the shallow structure for the San Jacinto Fault in the Ramona Reservation of southern California. The study uses ambient seismic noise recorded by a linear array of 65 3‐C sensors across the fault.
Xin Liu, Gregory C. Beroza, Yehuda Ben‐Zion   +2 more
doaj   +1 more source