KOIDE, MINORU (1926-2008)

Min Koide
      Minoru Koide was born November 2, 1926, in San Diego the fourth child born to Taju and Miwa Koide. His father, Taju Koide, was the proud captain of the Enterprise, one of the city's first tuna clippers, if not the first one to carry ice Japanese American fishing community.
     After the bombing of Pearl Harbor, Japanese American on the Pacific states were forcibly evacuated from their homes.  Min was evacuated with his mother and siblings to the Santa Anita Assembly Center. They arrived at the Poston, Arizona concentration camp 3 on August 27, 1942, and assigned to apartment 328-8-D. His father, Taju Koide, was under suspicion as an "enemy alien" as a tuna fisherman, and was arrested and detained for U.S. Immigration. He was transferred for incarceration to the Department of Justice internment camp at Santa Fe, New Mexico.  On November 28, 1943, his father was allowed to join the family at Poston, Arizona. Min graduated from Poston 3 High School in 1944 and was a member of the College Bound Club and vice-president of the Lettermen Club. Woodworking was a central passion in Min's later life, which began when the Koide family was at Poston, Arizona camp 3. One of his earliest creations was a chest of drawers with the scrap wood ripped from one of the barbed wire fence posts. On February 5, 1944, he departed from Poston, Arizona to attend college in McPherson, Kansas.
    At age 18 and out of U.C.L.A., he was given the opportunity to become a chemist at the Scripps Institute of Oceanography. Over the years, Min participated in many of the early SIO oceanographic expeditions covering the world oceans. The expeditions collected sediment cores and sea water samples for analysis in the laboratories. In the 1960s, he developed many analytical methods used in geochronology. These new methods used isotopes of natural occurring elements the sediments and sea water. With this method, sediments could be dated and used as chemical tracers. In the late 1960-1970s, Min in collaboration with Dr. Rudy Bieri, developed a mass spectrometer capable of measuring trace amounts of inert gasses (helium, argon neon, krypton) in sea water and sediment. In the early 1970s, Min developed methods to measure mercury, sulfur and selenium) in sea water and glacial ice from Greenland. This was the beginning of the study of the environmental investigation of man's activities on the oceans. This was followed by studies of the influx heavy elements (lead, mercury, zinc) into the ocean environment and its effect on the marine sea life's food chain. Again, isotopes methods were developed to measure the radioactive products resulting from the nuclear test conducted by the U.S. and Russia. These isotopes (plutonium) were found both in the northern and southern oceans and in the north and south polar glaciers.
     During his many years at SIO he acted as a friend, mentor and teacher to many of the graduate students working on their PhD in Geochemical Oceanography. All his work contributed to our better understanding of our planet-----the interaction of the atmosphere, with the oceans-----and the anthropogenic effect.
     In 1955, he married Amy Matsumoto and had one child, Gary, in 1969. For the last 25 years of his life, he was devoted to the passion of bowl turning from the most exotic hardwoods from every part of the world.
      Minoru Koide died on November 23, 2008 to cancer at the age of 82.

Published in The San Diego Union Tribune on Nov. 30, 2008