Hu Dunxin, male, Han nationality, is a native of Jimo, Shandon Province. He graduated from Shandong Univeristy in 1961.
Hu discovered the "Mianlanlao Ground Flow" in the Pacific Ocean, which changed the traditional understanding about the fluid mechanics structure of the west Pacific boundary. He made great contributions to the understanding of marine longitudinal heat transferring, balancing and weather situation. He discovered the middle scale of the "East Sea Cold Eddy" in the Chinese continental shelf; advanced the study of Chinese continental shelf circulation; introduced the concept that the geochemical "PO" (-135PO4+O2) is the conservative quantum separated from the oxygen in the ocean into the inversion mode of atmospheric circulation and thus improved the precision and calculating accuracy of inversion mode. He put forward the non-wind borne mechanism of ascending streams along the Zhejiang shore; corrected the traditional wind borne theory of ascending streams; discovered and explained from the dynamics that there exists a close relationship among the "continental shelf, ascending stream and seabed silt deposition" and promoted the interdisciplinary study of physical oceanography and marine deposit science.