Results 91 to 100 of about 9,213 (307)

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

Occurrence Conditions and Hydrogeochemical Characteristics of High-Temperature Geothermal Resources in the Eastern Jiyang Depression

open access: yesYankuang ceshi
The eastern part of the Jiyang Depression possesses high-temperature geothermal resource potential due to the influence of the destruction of the North China craton, but there is a lack of systematic research on the occurrence conditions of high ...
Bo LI   +7 more
doaj   +1 more source

Puna Geothermal Venture proposed amendment to plan of operations

open access: yes, 1991
"Attached please find, for your review and approval, PGV's proposed amendment to the Plan of Operations regarding the following two aspects of the geothermal field development: 1) drilling sequence and schedule; and 2) geologic modeling of the PGV ...
Puna Geothermal Venture
core  

Exploring structure and stress from depth to surface in the Wairakei Geothermal Field, New Zealand

open access: yes, 2017
Structures such as fractures and faults have an important role as fluid flow pathways in geothermal fields, as the reservoir rocks hosting geothermal resources can often have little to no intrinsic permeability.
Villamor, Pilar   +6 more
core   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

open access: yesDeep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Mapping and resource evaluation of deep high-temperature geothermal resources in the Jiyang Depression, China

open access: yesEnergy Geoscience
In China, geothermal resource utilization has mainly focused on resources at shallow and medium depths. Yet, the exploration of deep, high-temperature geothermal resources holds significant importance for achieving the “dual carbon” goals and the ...
Shaozheng Wang   +7 more
doaj   +1 more source

Geothermal Resource Management and Reporting: learning from (NZ) petroleum regulator experience

open access: yes, 2016
Geothermal energy is a clean and sustainable energy resource. In many countries with naturally occurring hydrothermal resources (like Iceland, Italy, New Zealand and the Pacific Rim of Fire) geothermal power plants have been successfully generating for ...
Archer, Rosalind, van Campen, Bart
core  

Hawaii's geothermal future and the deep water cable [PDF]

open access: yes, 1982
Geothermal Resources Council, Transactions, vol. 6, October 1982"The State of Hawaii presently utilizes costly imported fuel-oil for over 90 percent of its electrical power generation.
Uemura, Roy T.   +2 more
core  

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