Detecting natural fractures with ground penetrating radar and airborne night-thermal infrared imagery around Old Faithful Geyser, Yellowstone National Park, USA
Old Faithful Geyser;
Ground penetrating radar;
Yellowstone National Park;
Hydrothermal systems;
Old Faithful fractures;
Thermal infrared;
D O I:
10.1016/j.geothermics.2019.101775
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:
Both surface and shallow (similar to 3 m depth) subsurface natural fractures exist around the siliceous sinter cone of Old Faithful Geyser in Yellowstone National Park. Surface fracture trends identified using night-thermal infrared (FIR) imagery are consistent with previously mapped fault and fracture trends in the Upper Geyser Basin and Old Faithful area. An April 2015 ground penetrating radar (GPR) survey of the Old Faithful Geyser cone detected similar "blind" subsurface fracture trends around the siliceous sinter cone of Old Faithful Geyser. Intersecting NE and NW as well as WNW and ENE trends in the shallow subsurface provide potential fracture pathways for the flow of hydrothermal fluids around Old Faithful Geyser. Both the TIR and GPR techniques contribute new information on the permeable pathways around Old Faithful Geyser.