Results 31 to 40 of about 2,059 (169)

Inversion of Love waves in earthquake ground motion records for two-dimensional S-wave velocity model of deep sedimentary layers

open access: yesEarth, Planets and Space, 2021
We propose a new waveform inversion method to estimate the 2D S-wave velocity structure of deep sedimentary layers using broadband Love waves. As a preprocessing operation in our inversion scheme, we decompose earthquake observation records into velocity
Kentaro Kasamatsu   +2 more
doaj   +1 more source

Dykes, Synclines and Geophysical Inversion - is geology important? [PDF]

open access: yesASEG Extended Abstracts, 2018
In the last 10 years, the average depths of cover for gold and base metal discoveries was 60 and 128 metres respectively (Schodde, 2017). Existing methods of geophysical search techniques appear to lose their practical effectiveness below ~200m. This lack of success has been highlighted as part of the general UNCOVER movement in Australia.
openaire   +1 more source

New perspectives on Solid Earth Geology from Seismic Texture to Cooperative Inversion [PDF]

open access: yesScientific Reports, 2019
AbstractSeismic and electromagnetic methods are fundamental to Solid Earth research and subsurface exploration. Acquisition cost reduction is making dense 3D application of these methods accessible to a broad range of geo-scientists. However, the challenge of extracting geological meaning remains.
Le, Cuong Van Anh   +2 more
openaire   +2 more sources

Synthetic modelling of downhole resistivity data to improve interpretation of basin morphology from magnetotelluric inversion

open access: yesEarth, Planets and Space, 2020
Prospective Proterozoic units in the southern Mount Isa Province are concealed by a poorly defined extent of younger basin cover, leading to poor exploration success.
Janelle M. Simpson, Graham Heinson
doaj   +1 more source

Building probabilistic quasi-geology models and mapping mineral resources using joint inversion and geology differentiation

open access: yes, 2023
Multiple data sets are typically collected in an airborne survey. The standard way of interpreting multiple airborne data sets is to invert them separately to obtain a set of physical property models, e.g., a density contrast and a susceptibility model. There are two issues with this approach.
Sun, J., Wei, X.
openaire   +2 more sources

Velocity structure above seismological bedrock estimated from earthquake recordings: an application of diffuse wave-field concept to strong motions in Iran

open access: yesEarth, Planets and Space, 2023
We present velocity structure inversion for three stations of Iranian Strong Motion Network (ISMN), and one KiK-net station that is used as a benchmark, for the application of diffuse wave-field concept in tectonic and geological setting of the west of ...
Iman Ashayeri, Eri Ito, Hiroshi Kawase
doaj   +1 more source

Application of frequency division inversion in the prediction of heterogeneous natural gas hydrates reservoirs in the Shenhu Area, South China Sea

open access: yesChina Geology, 2022
: Drilling results suggest that the thickness of natural gas hydrates (NGHs) in the Shenhu Area, South China Sea (SCS) are spatially heterogenous, making it difficult to accurately assess the NGHs resources in this area.
Shu-yu Wu   +7 more
doaj   +1 more source

Whole lifecycle geology-engineering integration of volumetric fracturing technology in unconventional reservoir

open access: yesYouqicang pingjia yu kaifa, 2021
Based on the concept of geology-engineering integration, a systematic research, including theoretical study and field investigation, has been performed on design optimization, implement control and post-frac management of the whole lifecycle of ...
JIANG Tingxue   +5 more
doaj  

Seabed topography beneath Larsen C Ice Shelf from seismic soundings [PDF]

open access: yesThe Cryosphere, 2014
Seismic reflection soundings of ice thickness and seabed depth were acquired on the Larsen C Ice Shelf in order to test a sub-ice shelf bathymetry model derived from the inversion of IceBridge gravity data.
A. M. Brisbourne   +5 more
doaj   +1 more source

Early-middle Miocene Inversion of the Abu Jir Fault in the Western Iraq: a Possible Consequence of the Arabian Plate Northward Movement

open access: yesIraqi Geological Journal, 2023
The Abu Jir fault zone in western Iraq that marks the western limit of the Zagros foreland basin merges with the Anah graben in the north. The northern segment of the Abu Jir fault zone and the western Anah graben are inverted structures.
Abdulkhaleq Alhadithi   +2 more
doaj   +1 more source

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