نتایج جستجو برای: karst hydrology

تعداد نتایج: 11544  

Journal: :Forests 2023

Severe soil-water loss and unfertile soil frequently occur under karst desertification environments. The surface-underground dual structure in these areas allows the surface water to leak into subsurface through cracks sinkholes, as well other conduits, causing a special “karst drought”. Hence, water-resource shortage has become challenge for local agricultural development. To realize efficient...

1998
LINYUE CHEN PRADEEP TALWANI Pradeep Talwani

A review of case histories of reservoir-induced seismicity (RIS) in China shows that it mainly occurs in granitic and karst terranes. Seismicity in granitic terranes is mainly associated with pore pressure diffusion whereas in karst terranes the chemical effect of water appears to play a major role in triggering RIS. In view of the characteristic features of RIS in China, we can expect moderate...

Journal: :IOP conference series 2022

Abstract Serpeng and Sumurup are allogeneic rivers in Wonosari’s basin, which derive water to Gunungsewu karst drainage system. The river flow characteristics of their system influenced by the watershed weather conditions area. In addition, quantitative morphometry plays an important role hydrological processes with remote sensing geospatial techniques used carry out a morphometric analysis. SR...

2017
Cyril Fleurant Gregory E. Tucker Heather A. Viles

This paper deals with a landscape evolution model to compute cockpit karsts landforms. The CHILD model is used to model geomorphic processes at regional scale. After examining briefly CHILD’s principles and equations of limestone dissolution processes, the denudation model is detailed. The relation between subcutaneous dissolution and denudation of the topography is introduced by means of an em...

Vulnerability assessment and mapping of hazard pollution is raised on as an important management strategy to protect the karst. Karstic aquifers in semi-arid regions of the West of Iran with regard to the natural conditions of the region, are susceptible to contamination. Estimation of amount and vulnerability mapping of aquifers in the karst religion of Bistoun- Paraw – Kermanshah plain agains...

2012
Cyril Fleurant Gregory E. Tucker Heather A. Viles

This paper deals with a landscape evolution model to compute cockpit karsts landforms. The CHILD model is used to model geomorphic processes at regional scale. After examining briefly CHILD’s principles and equations of limestone dissolution processes, the denudation model is detailed. The relation between subcutaneous dissolution and denudation of the topography is introduced by means of an em...

2012
Hermann Stadler Albrecht Leis Till Harum Kurt Woletz Andreas H. Farnleitner

Water resources from alpine and other mountainous karst aquifers play an important role for water supply in many European countries. As regulated in the WFD (Water Framework Directive), karstic catchments require sustainable protection. The increasing strains to such regions and the different utilization in the watersheds of karst springs are important triggers to establish early warning system...

2018
Ray Kenny

The upper carbonate member of the Kaibab Formation in northern Arizona (USA) was subaerially exposed during the end Permian and contains fractured and zoned chert rubble lag deposits typical of karst topography. The karst chert rubble has secondary (authigenic) silica precipitates suitable for estimating continental weathering temperatures during the end Permian karst event. New oxygen and hydr...

2017
Oliver W. Moore Heather L. Buss Sophie M. Green Man Liu Zhaoliang Song

Soil degradation, including rocky desertification, of the karst regions in China is severe. Karst landscapes are especially sensitive to soil degradation as carbonate rocks are nutrient-poor and easily eroded. Understanding the balance between soil formation and soil erosion is critical for long-term soil sustainability, yet little is known about the initial soil forming processes on karst terr...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2014
Xia Zhang Kun Shang Yi Cen Tong Shuai Yanli Sun

Coverage rates of vegetation and exposed bedrock are two key indicators of karst rocky desertification. In this study, the abundances of vegetation and exposed rock were retrieved from a hyperspectral Hyperion image using linear spectral unmixing method. The results were verified using the spectral indices of karst rocky desertification (KRDSI) and an integrated LAI spectral index: modified chl...

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