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Karst land subsidence mostly occurs in ( ). A. Main runoff zone of exposed karst groundwater B. Main runoff zone of shallowly covered karst groundwater C. Discharge zone of exposed karst groundwater D. Discharge zone of shallowly covered karst groundwater Answer: ABCD Explanation: Chapter 13, Section 7, P420 ; Collapses mainly occur in areas with covered karst and exposed karst, and to some extent in areas with buried karst. ③Groundwater movement. The dynamic conditions for collapse – the main driving force. The flow of groundwater and changes in its hydrodynamic conditions are the most important driving factors behind the formation of karst collapse. Areas where groundwater flow is concentrated and intense are most prone to collapse; such areas include: a. the main flow zones of karst groundwater ; b. (Concentrated) discharge zones of karst groundwater ;
Karst land subsidence often occurs in (ABCD). A. Main runoff zone of exposed karst groundwater B. Main runoff zone of shallowly covered karst groundwater C. Discharge zone of exposed karst groundwater D. Discharge zone of shallowly covered karst groundwater
Karst land subsidence often occurs in (ABCD). A. Main runoff zone of exposed karst groundwater B. Main runoff zone of shallowly covered karst groundwater C. Discharge zone of exposed karst groundwater D. Discharge zone of shallowly covered karst groundwater
Karst land subsidence often occurs in (A B C D).
Karst land subsidence often occurs in (A, B, C, D)
Karst land subsidence often occurs in (D).
Karst land subsidence often occurs in (ABCD). A. Main runoff zone of exposed karst groundwater B. Main runoff zone of shallowly covered karst groundwater C. Discharge zone of exposed karst groundwater D. Discharge zone of shallowly covered karst groundwater
Karst land subsidence often occurs in (ABCD).
A, B, C, D, ———————– ———————– ———————–
Karst land subsidence often occurs in (ABCD). A. Main runoff zone of exposed karst groundwater B. Main runoff zone of shallowly covered karst groundwater C. Discharge zone of exposed karst groundwater D. Discharge zone of shallowly covered karst groundwater