Deep-Ocean Seismometer Implantation System. Phase 1
Abstract
The overall objective of this Phase I project was to determine the feasibility of a soft landing, hydraulically powered penetrator for deploying seimometers at depths of 30 to 100 meters beneath the surface of the deep-ocean bottom. Seismometers deployed at these depths will be better coupled to the sediment and will be isolated from VLF/ULF noise signals associated with surface waves at the sediment/water interface and from current-induced noise. The primary application of the implantation system will be the deployment of seismometers with increased sensitivity to signals in the VLF/ULF band. These signals may be used in ASW activity, where ease of deployment is a primary consideration. A practical system will also be of interest to the marine seismology community. The primary objectives were to observe the penetration rate capability of a 130-mm-diameter prototype penetrator and to determine the size, logistics and cost of a complete deep-ocean deployment system. A prototype penetrator was fabricated and tested in clay bearing silt and sand. A Phase II proposal for a prototype seismometer deployment system, including cost estimates and deployment requirements, is being submitted. This system is designed to be a compact, self-contained package that can be deployed by ship or aircraft.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1989
- Accession Number
- ADA212153
Entities
People
- J. J. Kolle