Results 91 to 100 of about 521,250 (248)

Detection of Karst Features in the Black Hills Area in South Dakota/Wyoming, USA, Based on Evaluations of Remote Sensing Data [PDF]

open access: yes, 2018
Landsat 8, Sentinel 2, Aster, RapidEye and PlanetScope data and Sentinel 1- and Advanced Land Observing Satellite (ALOS)-Phased Array type L-band Synthetic Aperture Radar (PALSAR)-radar images have been evaluated for a karst feature inventory in the ...
Theilen-Willige, Barbara
core   +2 more sources

Evaluation of the Non-Darcy Effect of Water Inrush from Karst Collapse Columns by Means of a Nonlinear Flow Model

open access: yesWater, 2018
Karst collapse columns (KCCs) are naturally formed geological structures that are widely observed in North China. Given their influence on normal mining operations and the progress of mining work, collapse columns pose a hidden danger in coal mining ...
Yi Xue   +6 more
semanticscholar   +1 more source

Dynamic evolution characteristics of ground collapse of covered karst based on particle flow

open access: yesCarsologica Sinica
Karst collapse represents a significant geological hazard, predominantly occurring in regions characterized by the presence of soluble rock formations, including carbonate rocks, calcareous clastic rocks and salt rocks, among others.
Hai SHI   +4 more
doaj   +1 more source

Emergence of Tri-Phasic Muscle Activation from the Non-linear Interactions of Central and Spinal Neural Network Circuits [PDF]

open access: yes, 1991
The origin of the tri-phasic burst pattern, observed in the EMGs of opponent muscles during rapid self-terminated movements, has been controversial. Here we show by computer simulation that the pattern emerges from interactions between a central neural ...
Bullock, Dan, Grossberg, Stephen
core   +1 more source

Speleothem Paleoclimatology for the Caribbean, Central America, and North America [PDF]

open access: yes, 2019
Speleothem oxygen isotope records from the Caribbean, Central, and North America reveal climatic controls that include orbital variation, deglacial forcing related to ocean circulation and ice sheet retreat, and the influence of local and remote sea ...
Arienzo, Monica M.   +4 more
core   +2 more sources

Trends and oscillations in the Indian summer monsoon rainfall over the last two millennia [PDF]

open access: yes, 2015
Observations show that summer rainfall over large parts of South Asia has declined over the past five to six decades. It remains unclear, however, whether this trend is due to natural variability or increased anthropogenic aerosol loading over South Asia.
Berkelhammer, Max   +7 more
core   +1 more source

Study on the dynamics response characterstics of covered soil-cave type karst collapse under train vibration environment

open access: yesCarsologica Sinica
Karst collapse represents a significant geological hazard, predominantly occurring in regions characterised by the presence of soluble rock formations, including carbonate rocks, calcareous clastic rocks and salt rocks, among others.
Hai SHI   +4 more
doaj   +1 more source

Predicting Erosion-Induced Water Inrush of Karst Collapse Pillars Using Inverse Velocity Theory

open access: yes, 2018
Although the impact of Karst Collapse Pillars (KCPs) on water inrush has been widely recognized and studied, few have investigated the fluid-solid interaction, the particles migration inside KCPs, and the evolution feature of water inrush channels ...
Banghua Yao   +4 more
semanticscholar   +1 more source

Sinkhole genesis and evolution in Apulia, and their interrelations with the anthropogenic environment [PDF]

open access: yes, 2004
Sinkhole development occurs in many areas of the world where soluble rocks crop out. Sinkholes are generally the surface expression of the presence of caves and other groundwater flow conduits in carbonate rocks, which are solutionally enlarged secondary
A. Federico, M. Delle Rose, M. Parise
core   +1 more source

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