Results 11 to 20 of about 13,879 (267)

Analysis of the Borehole Effect in Borehole Radar Detection [PDF]

open access: yesSensors, 2020
The directional borehole radar can accurately locate and image the geological target around the borehole, which overcomes the shortcomings that the conventional borehole radar can only detect the depth of the target and the distance from the borehole.
Wentian Wang   +3 more
openaire   +3 more sources

Fault associated with the 1967 M 6.3 Koyna earthquake, India: A review of recent studies and perspectives for further probing

open access: yesJournal of Asian Earth Sciences: X, 2022
The Koyna region in western India, characterized by recurrent seismic activity over more than five decades and confined largely within a 20 km × 30 km area and ∼10 km in depth, is a classical site to study earthquake processes.
Kunal Modak   +4 more
doaj   +1 more source

The 2020 earthquake sequence and seismic hazard scenario of Mizoram state in northeast India

open access: yesFrontiers in Earth Science, 2022
The Mizoram state of India lies in close proximity to the active Indo-Burma subduction zone and had experienced several moderate to large earthquakes, including the M7 event in 1938. Since 2015, only two events with 5<M<6 have occurred in the area,
Brijesh K. Bansal   +2 more
doaj   +1 more source

Performance of the Wireline Heave Compensation System Onboard D/V JOIDES Resolution [PDF]

open access: yesScientific Drilling, 2013
No abstract available.
G. Iturrino   +13 more
doaj   +1 more source

CONCENTRATION LEVELS OF PHYSICO-CHEMICAL PROFILES AND QUALITY ASSESSMENT OF GROUNDWATER: A CASE STUDY OF SOUTHERN IJAW, BAYELSA STATE, SOUTHERN NIGERIA [PDF]

open access: yesEngineering Heritage Journal, 2023
This study examined the concentration levels of physico-chemical profiles of groundwater quality of communities in Southern Ijaw Local Government Area of Bayelsa State, Nigeria. The seasonal variation of groundwater quality were evaluated.
Nwankwoala, H.O   +2 more
doaj   +1 more source

Age–depth model of the past 630 kyr for Lake Ohrid (FYROM/Albania) based on cyclostratigraphic analysis of downhole gamma ray data [PDF]

open access: yesBiogeosciences, 2015
Gamma ray (GR) fluctuations and potassium (K) values from downhole logging data obtained in the sediments of Lake Ohrid from 0 to 240 m below lake floor (b.l.f).
H. Baumgarten   +8 more
doaj   +1 more source

Borehole multi-functional logger for geophysical high-precision monitoring in Antarctic and Greenland ice sheets and glaciers

open access: yesAnnals of Glaciology, 2021
This article presents the main aspects of the design solutions (based on the application of sensors MEMS and cantilevers), testing and applying of the multi-functional borehole logger ANTTIC (Antarctic Thermo-barometer, Inclinometer, Caliper) for ...
Aleksey Markov   +4 more
doaj   +1 more source

DETERMINATION OF METHANE DESORPTION ZONE FOR THE DESIGN OF A DRAINAGE BOREHOLE PATTERN (CASE STUDY: E4 PANEL OF THE TABAS MECHANIZED COAL MINE, IRAN)

open access: yesRudarsko-geološko-naftni Zbornik, 2021
Underground coal mining is known as one of the major sources of methane emissions which mainly occurs after underground coal extraction. Rock strata in-situ methane can potentially be the most significant hazard in coal mining operations.
Ali Hosseini, Mehdi Najafi
doaj   +1 more source

Depthwise evaluation of total dissolved solids and arsenic from a drilled borehole near River Ravi, Lahore, Pakistan

open access: yesJournal of Water and Climate Change, 2023
Groundwater pollution is now a significant threat to the ecosystem. The untreated disposal of municipal and industrial wastes through drains into water bodies (rivers, lakes, and canals) is the primary source of contamination.
Habib Ur Rehman   +2 more
doaj   +1 more source

Modeling magnetostraigraphy in a borehole [PDF]

open access: yesGeophysics, 1989
Abstract The magnetic field along a hole bored through a sequence of dipping layers with varying magnetization and planar interfaces is calculated. The emphasis is on recovering remanent magnetization polarity transitions for magnetostratigraphic applications (dating, correlations), although intensity of remanent magnetization can in ...
Gallet, Yves, Courtillot, Vincent
openaire   +1 more source

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