Results 211 to 220 of about 6,313,283 (262)

Areas Affected by Karst and Pseudokarst

2016
This chapter briefly discusses the presence of karst and pseudokarst in the US and worldwide. Soluble rocks exist at or near the surface over approximately 25 % of the US. If pseudokarst and deep conditions are included up to 75 % of the US may be affected. Similar conditions may exist worldwide.
Richard C. Benson, Lynn B. Yuhr
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Multimethod geophysical survey on a karst area

5th EEGS-ES Meeting, 1999
A geophysical survey with several techniques was carried out on a karst area in southern Sardinia (Italy), where a large sinkhole, 15m deep and 18m wide suddenly occurred. The sinkhole was situated at a distance of 50m from a railway and therefore it could represent an impending danger.
BALIA, ROBERTO, BOI A., FANNI M., GAVAUDO' E., GHIGLIERI, GIORGIO   +4 more
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Groundwater withdrawal impacts in a karst area

Environmental Geology, 1993
During a 3000-gpm pump test on a groundwater supply well in Augusta County, Virginia, residential properties were impacted. The impacts included lowered farm pond water levels, development of a sinkhole, and water level decrease in residential wells.
R. A. DeStephen, C. P. Benson
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Review of Groundwater Pollution and Protection in Karst Areas

Water, Air, and Soil Pollution, 1999
Karst groundwater (the water in a karst aquifer) is a major water resource in many regions of some countries. Water requirements for most of the settlements in the karstic regions are supplied from karst aquifers. Karst environments are also used for the disposal of liquid and solid domestic agricultural, and industrial wastes, which result in karst ...
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Structural–Geological Mapping of Karst Areas

2020
For understanding geological structure of karst areas (Palmer in Cave geology, Cave Books, Dayton, Ohio, p 454, 2007) it is inevitably to have detailed geological maps.
Matej Blatnik, David C. Culver, Franci Gabrovšek, Martin Knez, Blaž Kogovšek, Janja Kogovšek, Hong Liu, Cyril Mayaud, Andrej Mihevc, Janez Mulec, Magdalena Năpăruş-Aljančič, Bojan Otoničar, Metka Petrič, Tanja Pipan, Mitja Prelovšek, Nataša Ravbar, Trevor Shaw, Tadej Slabe, Stanka Šebela, Nadja Zupan Hajna   +19 more
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Speleogenesis in Dinaric karst area

Geophysical research abstracts, 2015
The speleogenesis in 9 different geological periods in the Dinaric rocky terrain in Croatia with their characteristics and diversity with examples were described in one place.
Garašić, Mladen, Garašić, Davor
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Stress-strain state of karst areas

Journal of Mining Science, 2009
Numerical modeling data on evolution of the stress-strain state of a rock mass containing a karst cavity are reported.
A. A. Baryakh, E. P. Rusin, S. B. Stazhevsky, A. K. Fedoseev, G. N. Khan   +4 more
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Karst Landforms in the Lagoa Santa Area

2020
The karst landscape in the Lagoa Santa area is characterized by a full suite of typical karst landforms, with some peculiar features commonly not found in other karst areas. The karst is developed in Proterozoic carbonates of the Sete Lagoas Formation.
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Protection Measures for Pipeline in Karst Area

ICPTT 2013, 2013
In connection with the types of geo-hazards constituted by karst effect to pipeline ,this paper elaborates the evaluating calculation methods for the stability of karst top slab and estimation formula for the safe distance between karst cave and pipeline.
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Catchment (recharge area) in karst !?

2017
Catchment area, drainage area or drainage basin can be defined as: (1) the area of land bounded by watersheds draining into a river basin, spring or reservoir ; (2) the entire geographical area drained by a river and its tributaries, and by spring ; (3) an area characterized by all runoff being conveyed to the same outlet.
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