A data memory system for a seafloor-earthquake-measuring instrument
Abstract
A Seafloor Earthquake Measurement System for measuring strong motion seismic data was developed and tested as part of the Offshore Instrumentation Program. The system's function is to gather data for the design and regulation of offsore structures such as oil platforms and pipelines. The seafloor package is a self contained unit capable of operating unttended for up to one year with data readout on command via an underwater acoustic telemetry system. One of the problems with such a system is the large memory required to store seismic data. This memory also must consume very little power to conserve batterylife. To meet these conditions a combination low power. CMOS buffer memory and a one million bit magnetic bubble main memory with switched power was developed. These memories and how they are controlled by a microprocessor to save the best data since the last data readout are described.
- Publication:
-
Presented at the Intern. Telemetering Conf
- Pub Date:
- 1982
- Bibcode:
- 1982inte.conf.....R
- Keywords:
-
- Earthquakes;
- Ocean Bottom;
- Offshore Platforms;
- Seismic Waves;
- Buffer Storage;
- Cmos;
- Data Recording;
- Magnetic Storage;
- Microprocessors;
- Instrumentation and Photography