Walter Munk 3552547 219133357 2008-06-13T18:52:59Z Mattisse 1386816 article has no reference citations - just list of External links at end {{nofootnotes}} '''Walter Heinrich Munk''' (born [[October 19]], [[1917]]) is a major contributor to the field of [[physical oceanography]] and geophysics. At present, he is professor of geophysics emeritus and holds the Secretary of the Navy/Chief of Naval Operations Oceanography Chair at [[Scripps Institution of Oceanography]] in [[La Jolla, California]]. ==Biography== Born in [[Vienna]], [[Austria]], Munk was sent to a preparatory school in New York State in 1932. The family selected New York because they envisioned a career in finance for Munk in a New York bank with connections to the family business. His father, Dr. Hans Munk, and his mother, Rega Brunner, divorced when Munk was a child. His maternal grandfather was a prominent banker and Austrian politician, Lucian Brunner (1850-1914). His stepfather, Dr. Rudolf Engelsberg, was briefly a member of the Austrian government of President [[Engelbert Dollfuss]]. Munk worked at the firm for three years and studied at [[Columbia University]]. He hated banking, and left the firm to attend the [[California Institute of Technology]], where he earned a B.S. (1939) in physics. He applied for a summer job at the Scripps Institution of Oceanography. The next year the director of the Scripps, the distinguished Norwegian oceanographer [[Harald Ulrik Sverdrup]], accepted him as a doctoral student, but told Munk that he did not know of a single job in oceanography which would become available in the next decade. On June 20, 1953, Munk married Judith Horton. She was an active participant at the Scripps Institution of Oceanography for decades, where she made major contributions to architecture, campus planning, and the renovation and reuse of historical buildings. Judith Munk died on May 19, 2006. ===War activities=== Munk applied for American citizenship in 1939 after the [[Anschluss]] and enlisted in the ski troops of the [[U.S. Army]] as a private. This was unusual as all the other young men at Scripps joined the [[U.S. Naval Reserve]]. Munk was eventually excused from military service to undertake defense related research at Scripps. He joined several of his colleagues from Scripps at the [[U.S. Navy]] Radio and Sound Laboratory, where they developed methods related to amphibious warfare. Their methods were used successfully to predict surf conditions for [[Operation_Torch|Allied landings in North Africa]], [[Pacific_Theater_of_World_War_II|the Pacific theater of war]], and on [[D-Day]] during the [[Normandy invasion]]. ==Research== Munk completed an M.S. in geophysics in 1940 and a Ph.D. in oceanography from the [[University of California, Los Angeles]], in 1947. After graduation the [[Scripps Institution of Oceanography]] in [[La Jolla, California]] hired him as an assistant professor of geophysics. He became a full professor there in 1954. After World War II Munk also helped to analyze the currents, diffusion, and water exchanges at [[Bikini Atoll]] in the [[Oceania|South Pacific]], where the United States was testing [[nuclear weapons]]. He pioneered research on the relationship between winds and [[ocean circulation]], coining the now widely used term "wind-driven gyres." In the 1950s, Munk investigated irregularities in the Earth's rotation, such as the [[Chandler wobble]] and annual and long-term changes in the length of day (rate of the Earth's rotation), to see how these were related to geophysical processes such as the changes in the atmosphere, ocean and core, and the energy dissipated by [[tidal friction|tidal acceleration]]. Starting in the late 1950's he returned to the study of ocean waves, and, thanks to his acquaintance with [[John Tukey]] pioneered the use of [[spectral density|power spectra]] in describing wave behavior. This culminated with a study that he led in 1963 to observe waves waves generated by winter storms in the Southern Hemisphere and traveling thousands of miles throughout the Pacific ocean. To trace the path and decay of waves as they propagated northward, he established stations to measure waves from islands and at sea (on [[R/P FLIP]]) along a great circle from New Zealand to Alaska. The results showed little decay of wave energy with distance traveled. Between 1965 and 1975 he turned to investigations of [[tide|ocean tides]], again bringing to bear modern methods of time series analysis, and also developing deep-ocean pressure sensors that could be used to provide tidal data far from any land. In 1968 he became a member of [[JASON]], a panel of scientists who advised the U.S. government. Beginning in 1975, Munk and [[Carl Wunsch]] of the [[Massachusetts Institute of Technology]] pioneered the development of [[Ocean acoustic tomography|acoustic tomography]] of the ocean. Munk developed the theory that by studying the sound propagation patterns and the time it takes for sound to travel through the oceans, it would be possible to detect important information about the ocean's large-scale structure. He thus conceived the Heard Island Experiment, in which acoustic signals were transmitted by instruments lowered 150 meters underwater near the remote island in the southern Indian Ocean. During four days in January 1991, in an experiment that has been called "the sound heard around the world," signals sent from [[Heard Island]] were received on the east and west coasts of the United States, as well as at many other stations around the world. The follow-on to this experiment was the [[Acoustic Thermometry of Ocean Climate]] (ATOC) project in the North Pacific Ocean. In recent years he has worked on the role of tides in producing mixing in the ocean, and on the relation between changes in ocean temperature, sea level, and transfer of mass between continental ice and the ocean. ==Writings== His major works include ''The Rotation of the Earth: A Geophysical Discussion'' (with G.J.F. MacDonald, 1960) and ''Ocean Acoustic Tomography'' (with P. Worcester and C. Wunsch, 1995). ==Documentary== An interesting film documentary featuring Walter Munk was made in 1963. "Waves Across the Pacific" showcases his research on Antarctic storms and follows him and his fellow scientists as they track storm driven waves across the Pacific Ocean. The film is delightful and features scenes of early digital equipment in use in field experiments with Munk's commentary on how unsure they were about using such new technology in remote locations. ==Awards== Walter Munk was elected to the [[United States National Academy of Sciences|National Academy of Sciences]] in 1956 and to the Royal Society of London in 1976. He has been a both a [[Guggenheim Fellow]] (three times) and a Fulbright Fellow. He was also named California Scientist of the Year by the [[California Museum of Science and Industry]] in 1969. Among the many other awards and honors Munk has received are the [[Arthur L. Day Medal]], from the Geological Society of America in 1956, the Sverdrup Gold Medal of the [[American Meteorological Society]] in 1966, the Gold Medal of the [[Royal Astronomical Society]] in 1968, the first Maurice Ewing Medal sponsored by the American Geophysical Union and the U.S. Navy in 1976, the [[Alexander Agassiz Medal]] of the National Academy of Sciences in 1977, the Captain Robert Dexter Conrad Award from the U.S. Navy in 1978, the National Medal of Science in 1985, the William Bowie Medal of the [[American Geophysical Union]] in 1989, and the [[Kyoto Prize]] ([http://www.inamori-f.or.jp/laureates/k15_b_walter/prf_e.html external link]) in 1999. ===External links=== * [http://scripps.ucsd.edu/ Scripps Institution of Oceanography] * [[UCSD]] [http://www.igpp.ucsd.edu/ Institute of Geophysics and Planetary Physics] (IGPP) * [http://scilib.ucsd.edu/sio/archives/siohstry/munk-biog.html Biography UCSD] * [http://www.ldeo.columbia.edu/vetlesen/recipients/1993/munk_bio.html Biography Columbia U.] * [http://www.aip.org/history/ohilist/4790.html Oral History interview transcript with Walter Munk 30 June 1986, American Institute of Physics, Niels Bohr Library and Archives] {{DEFAULTSORT:Munk, Walter}} [[Category:1917 births]] [[Category:Members of the National Academy of Sciences]] [[Category:Living people]] [[Category:California Institute of Technology alumni]] [[Category:Foreign Members of the Royal Society]] [[Category:Jewish American scientists]] [[Category:National Medal of Science laureates]] [[Category:Oceanographers]] [[Category:Guggenheim Fellows]] [[Category:Scripps Institution of Oceanography]] [[de:Walter Munk]] [[pt:Walter Munk]]