Open AccessA Compact Portable Seismic Recorder
Author(s) -
Long R. E.
Publication year - 1974
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1974.tb02445.x
Subject(s) - magnetic tape , power consumption , compensation (psychology) , digitization , geology , acoustics , digital recording , electrical engineering , power (physics) , computer science , engineering , telecommunications , physics , quantum mechanics , psychoanalysis , psychology
Summary A small self‐contained portable seismic recorder is described which can record up to three seismic channels in F.M. mode on ¼′ magnetic tape. Encoded time from an internal clock, a radio time standard, and a standard frequency which is used for flutter compensation and subsequent digitization are simultaneously recorded. The equipment has a power consumption of less than 0.6 Watts and may be run from a set of internal dry cells for up to five days of continuous recording. Recording times of up to nine days are possible on a single 7″ reel of magnetic tape. The equipment is suitable for long or short period recordings and may be used as a narrow or broad band recorder.