. The Earth beneath the sea : History . Fig. 9. Gravity coverage in central section of Gulf of California obtained on Vermilion Sea Expedition in the spring of 1959. with this instrument under favorable conditions. Simultaneous measurements were taken with a LaCoste-Romberg underwater meter on the sea floor and with the surface meter at 27 anchored stations. Surface measurements were also made with Horizon anchored as close as possible (normally within 400- 1000 yds) to the shore, and a landing party sent ashore to make a simultaneous measurement with a geodetic land meter. Navigational vmcert
. The Earth beneath the sea : History . Fig. 9. Gravity coverage in central section of Gulf of California obtained on Vermilion Sea Expedition in the spring of 1959. with this instrument under favorable conditions. Simultaneous measurements were taken with a LaCoste-Romberg underwater meter on the sea floor and with the surface meter at 27 anchored stations. Surface measurements were also made with Horizon anchored as close as possible (normally within 400- 1000 yds) to the shore, and a landing party sent ashore to make a simultaneous measurement with a geodetic land meter. Navigational vmcertainties are eliminated from these comparisons and the results, shown in Table I, indicate an accuracy of 2-3 mgal for the surface measurements. The meter has also been
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom
