Title :
Techniques for Ocean Bottom Measurements of Magnetic Fields with a Superconducting Magnetometer
Author :
Dinger, Robert J. ; Davis, John R. ; Goldstein, Joseph A. ; Meyers, William D. ; Wolf, Stuart A. ; Cates, Michael
Author_Institution :
Naval Research Laboratory, Washington, DC 20375
Abstract :
A superconducting quantum interference device (SQUID) magnetometer cooled by liquid helium was placed on the ocean floor at a depth of 100 m in order to receive extremely low frequency radio transmissions. A nonmagnetic concrete and fiberglass platform anchored a fiberglass pressure vessel containing the magnetometer firmly to the ocean bottom. The helium gas evolved from the boiling liquid helium was vented through a hose to the surface. Details of the apparatus and the techniques used to install and recover the SQUID magnetometer are given.
Keywords :
Floors; Frequency; Helium; Magnetic field measurement; Oceans; Optical fiber devices; Radiofrequency interference; SQUID magnetometers; Sea measurements; Superconducting devices;
Journal_Title :
Geoscience Electronics, IEEE Transactions on
DOI :
10.1109/TGE.1977.294496
