Results 31 to 40 of about 14,241 (145)

Constraining the point source parameters of the 11 November 2019 Mw 4.9 Le Teil earthquake using multiple relocation approaches, first motion and full waveform inversions

open access: yesComptes Rendus. Géoscience, 2021
The point source parameters of the 11 November 2019 Le Teil earthquake (Mw 4.9) in France are revisited. Previous hypocenter determinations either located it on the wrong side of the causative fault, or had to restrain the depth ranges to obtain ...
Delouis, Bertrand   +6 more
doaj   +1 more source

Stylolites: A review [PDF]

open access: yesJournal of Structural Geology, Elsevier, 2018, 114, pp.163 - 195, 2018
Stylolites are ubiquitous geo-patterns observed in rocks in the upper crust, from geological reservoirs in sedimentary rocks to deformation zones, in folds, faults, and shear zones. These rough surfaces play a major role in the dissolution of rocks around stressed contacts, the transport of dissolved material and the precipitation in surrounding pores.
arxiv   +1 more source

An Assessment of the Epicenter Location and Surroundings of the 24 January 2020 Sivrice Earthquake, SE Türkiye

open access: yesEarth, 2023
The Sivrice earthquake (Mw 6.8) occurred on 24 January 2020 along the East Anatolian Fault (EAF) zone of Türkiye, and epicentral information and focal mechanism solutions were published by two national and six international seismic stations.
Mehmet Tekin Yurur   +3 more
doaj   +1 more source

Seismic hazard zoning in Urmia urban area. [PDF]

open access: yesتحقیقات کاربردی علوم جغرافیایی, 2016
Today, the resiliency of the human centers, especially urban centers against the natural hazards such as earthquakes, is one of the main challenges in the targeted management of urban.
Ali nasiri
doaj  

Geomorphology of the Clarion Clipperton Zone, tropical North Pacific Ocean

open access: yesJournal of Maps, 2021
The Clarion Clipperton Zone (CCZ) hosts a valuable deposit of polymetallic nodules. Understanding the geology of this deposit is key to its effective exploration and future mining.
John Parianos, Pedro Madureira
doaj   +1 more source

Experimental evidence of electrification processes at the 2009 LAquila earthquake mainshock [PDF]

open access: yes, 2015
Two types of coseismic magnetic field events are simultaneously observed: transient offset events and magnetic field signal that occurred at the destructive, Mw6.1 LAquila earthquake (EQ) mainshock. The offset event, conventionally interpreted as a signature of piezomagnetic effects, however could not be ascribed as such.
arxiv   +1 more source

Geophysical tomography in engineering geology: an overview [PDF]

open access: yesThe Open Geology Journal, Vol. 3, 30-38, 2009, 2005
An overview of the tomographic interpretation method in engineering geophysics is presented, considering the two approaches of the deterministic tomography inversion, developed for rock elasticity analysis, and the probability tomography imaging developed in the domain of potential fields methods.
arxiv   +1 more source

Surface deformation induced by the 2016 Meinong earthquake and its implications to active folds

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2023
We present 230 field observations on the location, trending, and displacement vectors of the coseismic surface cracks induced by the 2016 Meinong earthquake in the Guanmiao area, SW Taiwan. Coseismic surface cracks trends from the north to northeast. The
De-Cheng Yi   +4 more
doaj   +1 more source

Quantitative Analysis and Evaluation of Coal Mine Geological Structures Based on Fractal Theory

open access: yesEnergies, 2021
With the increasing depth of coal mining, the quantitative evaluation of the degree of geological structure development is becoming increasingly important for the control of mine water hazards in coal mining areas.
Gaizhuo Zhang   +6 more
doaj   +1 more source

Semi-Automated Segmentation of Geoscientific Data Using Superpixels [PDF]

open access: yesarXiv, 2023
Geological processes determine the distribution of resources such as critical minerals, water, and geothermal energy. However, direct observation of geology is often prevented by surface cover such as overburden or vegetation. In such cases, remote and in-situ surveys are frequently conducted to collect physical measurements of the earth indicative of ...
arxiv  

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