PRECISE GRAVITY MEASUREMENTS AT INFERNO CRATER, WAIMANGU, NEW-ZEALAND

被引:2
|
作者
HUNT, TM [1 ]
TOSHA, T [1 ]
机构
[1] GEOL SURVEY JAPAN,DEPT GEOTHERMAL,TSUKUBA 305,IBARAKI,JAPAN
关键词
MICROGRAVITY; GRAVITY CHANGES; MASS CHANGES; HOT SPRINGS; GEOTHERMAL SYSTEMS; TAUPO VOLCANIC ZONE;
D O I
10.1016/0375-6505(94)90020-5
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Five precise gravity surveys have shown that the only significant gravity changes which occurred during a cycle of lake level fluctuation were at points within about 2 m of the edge of the lake. These data suggest that groundwater in the surrounding rocks is perturbed only within about 5 - 15 m of the lake edge. The mass of fluid which periodically overflows must come from deep (> 200 m) beneath the lake or outside its immediate vicinity.
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页码:573 / 582
页数:10
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