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Deuterium (D) content of groundwater and precipitation, and tritium content of selected groundwater samples are used to infer flowpaths for groundwater in the Kilauea Volcano area. The spatial distribution of calculated recharge elevations and residence times for groundwater samples tends to support the idea that Kilauea's rift zones comprise leaky boundaries within the regional groundwater flow system, partly isolating the groundwater in the area bounded by the rift zones and the Pacific Ocean. The southwest rift zone also appears to act as a conduit for groundwater recharged at relatively high elevation. The relation between precipitation ??D values and elevation differs between areas receiving frequent rainfall and areas where most rainfall occurs during storm events.
Additional Publication Details
Preliminary results from an isotope hydrology study of the Kilauea Volcano area, Hawaii
Publ by Geothermal Resources Council
Davis, CA, United States
Number of Pages:
Proceedings of the 1993 Annual Meeting on Utilities and Geothermal: An Emerging Partnership