Hydrophone Investigations of Earthquakes and Explosion Generated High-Frequency Seismic Phases
Abstract
This report presents brief descriptions of published papers, in-house reports, or abstracts sponsored by this grant. A sampling of highlights from these investigations includes: 1) There is a strong correlation between ocean surface wind velocities and ocean bottom noise in the frequency range of 0.5 to 30 Hz; 2) Sites favorable for the detection of weak short-period signals may be found on the deep ocean bottom in regions with low wind; 3) The yield of large explosions might be disguised by siting the explosion at a location that selectively defocuses energy towards continents where most seismic stations are located; 4) The Wake Island array provides very stable measures of yield; 5) A moderate underground nuclear explosion appropriately placed in a subduction zone (e.g., the Kuril-Kamchatka portion of the circum-Pacific arc) could escape detection by the existing conventional network of continental and island seismic stations; 6) A new trench extending over 5000 km from the Marianas trench to the Tonga trench may be forming in the southwest Pacific; 7) A significant number of earthquakes, unreported by the conventional world wide network of seismic stations, are located within the interior of the Northwestern Pacific Basin. Seismicity; Ocean basins.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1989
- Accession Number
- ADA212055
Entities
People
- Daniel A. Walker
Organizations
- University of Hawaiʻi System