Word: survey
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Dates: during 1930-1939
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Some 100 miles southeast of Sandy Hook one day last fortnight the master of the Oceanographer and his officers gathered in the chartroom, as wide-eyed as though they were actually witnessing an undersea marvel. This U. S. Coast & Geodetic Survey ship is equipped with the latest type of echo-recorder, a device which automatically measures the depth of water by the time required for a sound to travel to the bottom and bounce back. The depth appears continuously on a dial and the profile of the sea floor is translated to a chart. Scrawled before the Oceanographer...
...appears that the Pleistocene rivers coursed through land that is now submerged and many of them carved deep gorges. That the Hudson carved one of the biggest and deepest was known as long ago as 1882, when soundings were made by the old line-&-sinker method, but an accurate survey had to wait for the development of continuous echo-sounders...
...Oceanographer's survey reveals that the old Hudson valley continued for 130 miles southeast of Sandy Hook. The valley was only a few fathoms deeper than its banks for the first 85 miles. At that point the present sounding is 600 ft. Then the river began to cut deeper. Few miles farther on the gorge is 2,400 ft. deep, eight miles wide, and its bottom is 3.000 ft. below present sea level. Greatest depth of the gorge from brink to bottom is 3.600 ft., which beats Colorado's Royal Gorge by 1,000 ft. It becomes shallower...
...Coast & Geodetic Survey is getting started this year on an undersea mapping project which will require three to six years, from the Delaware Capes to Nantucket. Assisting the Oceanographer are three small vessels: the Lydonia, which is doing inshore work in water as shallow as five fathoms; and the Gilbert and Welker, which serve as station ships to keep the Oceanographer constantly able to find its position within a quarter-mile. This is done by discharging TNT bombs from the mapping ship; the sound is picked up by hydrophones on the two station ships and automatically sent back by radio...
...regard to food the Bureau has also conducted a careful survey of the local eating places, about 30 of which have been located in Harvard Square and its environments. These establishments, it is felt, are sufficient to absorb the extra numbers at the time of the Celebration...