Geophysics

Abstract

"This review consisted of consultation of most of the original geophysical reports from the files of GeothermEx, followed by the examination of ENEL's evaluation of existing data for the KERZ. Homogeneous coverage of the KERZ is afforded by only three kinds of geophysical data: passive seismic, aeromagnetic, and airborne EM (VLF). Other types of data, including ground-based geoelectrical , gravimetric, microearthquake, and ground noise, have been collected rather intensively in the Lower KERZ, east of Pahoa; however, these data are virtually non-existent for the Middle and Upper parts of the KERZ. Even within the Lower KERZ, however, the distribution of observing points has been very uneven; station positions have apparently been confined to the irregular, mostly sparse, distribution of roads."