Vol. II: Gravity Expeditions at Sea 1923-1932. Report of the Gravity in the Atlantic of 1932 and the
Interpretation of the Results. Delft, 1934, published by Netherlands Geodetic Commission and
N. V. Technische Boekhandel; p. 208, 53 figs; 5 fold. plts (3 fold. colored maps incl.) + Tbls.
belonging to Gravity Expeditions at Sea; 4to, original green cloth covers; ex. libr., good condition.
Presentation copy signed by Vening Meinesz. Maurice Ewing's copy, inscribed and signed.
Vol. III: ''Gravity Expeditions at Sea. The Expeditions. The Computations and the Results 1934-1939''
1941, Delft, Drukkerij Waltman (A. J. Mulder), pp. 97, in 4to, hardback, original green cloth covers,
Ex-library. Signed, annotated and corrected (a few computations) in pencil by Joe Lamar Worzel.
Ex Libris Dr. J. Lamar Worzel on first cover; minor discoloration on spine, good condition.
Extremely rare; J. Worzel's copy.
Vol. IV: ''Gravity Expeditions at Sea. Complete Results with Isostatic Reduction. Interpretation of the
Results 1923-1938'', Delft, 1948, Delftsche Uitgevers Maatschappij; pp. 233, VI plates, VIII maps
In 4to; hardback, original green cloth covers, ex-library, minor scratches on spine.
Signed in blue ink by Maurice Ewing; good condtition; rare; Maurice Ewing's copy.
We added:
Vol. I: Gravity Expeditions at Sea 1923-1930.The Expedition, the Computation and the Results
Delft, Technische Boekhandel, 1932, 109 p., 4to, original green cloth covers, good condition
Previous owner stamp on first cover and title page (H. A. Brouwer, Warren Carey's PhD advisor).
Their research ''provided the underpinnings for one of the most successful of American espionage efforts in the cold war, eavesdropping on the sounds made by Soviet submarines.''
Dennis Hevesi, New York Times, Jan. 26, 2009
''In the spring of 1944, ocean scientists, Maurice Ewing and J. Worzel, departed Woods Hole, Massachusetts, aboard the research vessel R/V Saluda to test a theory that predicted that low-frequency sound should be able to travel long distances in the deep ocean. A deep receiving hydrophone was hung from R/V Saluda. A second ship dropped 4-pound explosive charges set to explode deep in the ocean at distances up to 900 miles from the R/V Saluda's hydrophone. Ewing and Worzel heard, for the first time, the characteristic sound of a SOFAR (SOund Fixing And Ranging) transmission, consisting of a series of pulses building up to its climax...
The U.S. Navy soon realized that the ability of low-frequency sound to travel long distances in the deep ocean could be used to increase the range at which submarines could be detected. In great secrecy during the 1950's, at the height of the cold war with the former Soviet Union, the U.S. Navy launched a project with the code name Jezebel. It would later become known as the SOund SUrveillance System (SOSUS). Arrays of hydrophones were placed on the ocean bottom and connected by underwater cables to processing centers located on shore. The SOSUS system was very successful in detecting and tracking the noisy Soviet submarines of that era.''
The University of Rhode Island's Graduate School of Oceanography and Marine Acoustic:
https://dosits.org/galleries/audio-gallery/marine-mammals/baleen-whales/humpback-whale/
Dr. Maurice Ewing also originated Project Mogul: ''a top secret project led by the US Air Force involving microphones flown on high-altitude balloons, whose primary purpose was long-distance detection of sound waves generated by Soviet atomic bomb tests.''
The Roswell UFO Incident was a consequence of this project.
The mission of ''Gravity Expeditions at Sea'' was to research the precise shape of the Earth by means of seafloor gravity. Felix Vening Meinesz' main discovery was the detection of the negative magnetic anomalies near Indonesian archipelago. These anomalies of the ocean trenches, called then Meinesz Belts, led later to the seafloor spreading concept (H. H. Hess).
Maurice Ewing (in 1960) and F. A. Vening Meinesz (in 1962) recieved the prestigious Vetlesen Prize.
The Vetlesen Prize was established in 1959 by the G. Unger Vetlesen Foundation, and was designed to be the Nobel Prize of the Earth Sciences, awarded for ''scientific achievement resulting in a clearer understanding of the Earth, its history, or its relations to the universe.''
Price: USD 1,200,000.00