Results 71 to 80 of about 240,017 (204)

Investigation of Submarine Permafrost Conditions in the Canadian Beaufort Sea Using Diving Wave Tomography

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Submarine permafrost in the Canadian Beaufort Sea is relict terrestrial permafrost, which is continuously degrading since the change of thermal conditions induced by a marine transgression that followed the last glaciation. Permafrost degradation has a crucial socio‐ecological significance because its thawing can result in geohazards like ...
H. Grob, D. Klaeschen, M. Riedel, S. Krastel, M. J. Duchesne, J. Bustamante, G. Fabien‐Ouellet, Y. K. Jin, J. K. Hong   +8 more
wiley   +1 more source

Geophysical Investigations of the Fujairah Basin, East Coast of United Arab Emirates: Insights Into Tectonic Evolution

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract The Fujairah basin in the Gulf of Oman experienced a complex tectonic evolution related to Late Cretaceous ophiolite obduction and Oligocene‐Miocene Zagros continental collision. The structure of the foreland basin in Oman‐UAE is well‐known, but the structure and evolution of the hinterland basin behind the obducted ophiolite and underlying ...
M. Y. Ali, M. Ismaiel, A. Abdelmaksoud, S. Pilia, A. B. Watts, M. P. Searle   +5 more
wiley   +1 more source

Constraining the Effect of Bathymetric High Subduction in an Accretionary Wedge: Evidence From the Tokai Area of the Nankai Trough, Japan

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.
Abstract The Tokai area in the eastern Nankai Trough is characterized by the subduction of a rough plate interface caused by bathymetric highs related to the adjacent Izu‐Bonin arc and fault fabrics in the oceanic crust. However, the effect of this process on the structural development of its accretionary wedge and megathrust seismicity is still poorly
Andrzej Górszczyk, Rafael Almeida, Romain Brossier, Ludovic Métivier, Stéphane Operto   +4 more
wiley   +1 more source

Prestack inversion identification of organic reef gas reservoirs of Permian Changxing Formation in Damaoping area, Sichuan Basin, SW China

Petroleum Exploration and Development, 2020
Organic reef reservoirs in the platform margin of Kaijiang-Liangping trough in Damaoping area, Sichuan Basin are thin in single layer, fast in lateral variation, and have small P-impedance difference from the surrounding rock, it is difficult to identify
Lu ZHOU, Feiyan ZHONG, Jiachen YAN, Kexiu ZHONG, Yong WU, Xihui XU, Peng LU, Wenji ZHANG, Yi LIU   +8 more
doaj   +1 more source

Seismic Imaging of Halokinetic Sequences and Structures With High‐Resolution, Dual‐Element Acquisition, and Processing: Applications to the Gassum Structure in Eastern Jutland, Denmark

Earth and Space Science, Volume 12, Issue 1, January 2025.
Abstract Understanding the structural intricacies of subsurface halokinetic formations is crucial for various geological applications, including geological capture and storage (geological carbon storage (GCS)). This study focuses on the seismic imaging of the Gassum structure in eastern Jutland, Denmark, employing high‐resolution, dual‐element ...
M. Westgate, K. Kucinskaite, E. Konstantinidis, A. Malehmir, M. Papadopoulou, U. Gregersen, M. Keiding, M. Bjerager   +7 more
wiley   +1 more source

Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin

, 2023
Amplitude anomalies in prestack seismic data are used as a risk analysis tool when identifying hydrocarbons in the subsurface. Amplitude variation with offset (AVO) analysis is most commonly applied to poorly consolidated rocks due to the compressibility
Watts, Doyle R., Murchek, Jacob T., Hauser, Ernest C., McColgan, Paul, Bridges, Lindell C.   +4 more
core   +1 more source

Compressed Multi-Trace Pre-Stack Inversion with Elastic Half-Norm Regularization

Applied Sciences
Multi-trace amplitude variation with angle inversion (MAVAI) is a vital tool for estimating the physical parameters of subsurface media, and it plays an important role in oil and gas exploration. However, the existing MAVAI method relies on the Kronecker
Nanying Lan, Chong Sun, Duoming Zheng, Zilun Xiong, Lang Yang, Linlin Huang, Haonan Tian, Fanchang Zhang   +7 more
doaj   +1 more source

New brittleness indexes and their application in shale/clay gas reservoir prediction

Petroleum Exploration and Development, 2015
Aiming at the disadvantages of the brittleness index commonly used in oil/gas exploration, this article proposed two new brittleness indexes (elastic brittleness and mineral brittleness) in order to predict brittle shale distribution accurately: the ...
Zhishui LIU, Zandong SUN
doaj   +1 more source

Detection and Spatial Delineation of Thin-Sand Sedimentary Sequences With Joint Stochastic Inversion of Well Logs and 3D Prestack Seismic Amplitude Data

, 2009
Summary We describe the successful application of a new prestack stochastic inversion algorithm to the spatial delineation of thin reservoir units otherwise poorly defined with deterministic inversion procedures.
Germán D. Merletti, Carlos Torres-Verdín   +1 more
core   +1 more source

Prediction method of thin sand reservoir with coal bearing: An example from PB area of Xihu Sag at East China Sea

地质科技通报
In the sedimentary environment shaped by river-tidal bidirectional flow, thin coal seams are typically located within the oil- and gas-bearing strata of the Pinghu Formation in the PB area of the Xihu Sag.
Pan LUO, Jiusheng LI
doaj   +1 more source