Marine Geophysicist, Geological Survey of Israel (Retired) After receiving his BSc at RPI in 1962, John worked three years at Woods Hole Oceanographic Institution, participating in geophysical cruises, ocean acoustic research, and writing the first marine geophysical programs for WHOI's GE-225. Entering Columbia's Lamont Geological Observatory for a PhD in 1965, he spent more than one year on Fletcher's Ice Island (T-3) in the Arctic Ocean. His thesis presented the marine geophysical data for the Alpha-Mendeleev Ridge from T-3's 1962-1970 drift over one third of the Amerasia Basin. Making aliya to Israel with his Israeli wife in 1970, he was the first marine geophysicist in Israel and at the GSI. His activities to the present, continuing unabated past retirement in 2006, consist of onshore and offshore tectonics of Israel, compilation of the 25m DTM of Israel and environs in 1993, and the entire multibeam mapping of Israel's waters in the Mediterranean, Red and Dead Seas, and the Sea of Galilee. He founded the Hall Map Archive at the IOLR and Hebrew University's Neev Center for Infomatics. He has published three books with Russian contributors on the geology of Syria, Cyprus and Israel, and the offshore. He continues scanning and archiving the legacy pre-computer maps and publications of the GSI and other earth science institutes. His latest project, in connection with the IHO-IOC-Nippon-GEBCO Seabed 2030 project, consists of a 100m grid of the 2% of the world around the Arabian Peninsula (32°N-10°S and 32°-80°E). His Arctic interests continue with support for expeditions since 2008 of his Arctic research hovercraft R/H SABVABAA. He is a longtime Fellow of the GSA and a Member of the Norwegian Scientific Academy for Polar Research. Hall Sea Knoll at 84°-30'N, 108°-118'W, (Холм Холл on Russian Chart 91115), is a 700m high and 4,000 km² feature in the Arctic Ocean named after him.