Comprehensive Survey of Multi-Elements in Coastal Sea and Stream Sediments in the Island Arc Region of Japan: Mass Transfer from Terrestrial to Marine Environments

摘要: The dispersion of sediments across terrestrial areas, estuaries, shelves, slopes, and basins in island arc regions is extremely active. Because Japan surrounded by vast oceans, it fundamentally important to know sediment characteristics dispersal systems upon the shelf slope terms erosion, transport, deposition sediments. Coastal seas, especially inner bays, often sustain severe damage from anthropogenic activities. Geochemical marine provide valuable clues regarding So far, diffusion fixation process elements vertical direction past sedimentary environment found core samples have attracted considerable scientific interest. However, regional spatial distributions chemical compositions land, coastal areas are less understood (e.g., Balls et al., 1997; Degens 1991; Ibbeken & Schleyer, Irion 1995; Karageorgis 2005; Voutsinou-Taliadouri Varnavas, Wang 2008). To better understand distribution earth’s surface, a geochemical map used. purpose obtain natural baselines on surface because history fundamental part geo-information. Many countries produced national atlases explore mineral recourses address growing concerns about environmental problems (Fauth 1985; Gustavsson 2001; Lis Pasieczna, Shacklette Boerngen, 1984; Thalmann 1988; Weaver 1983; Webb 1978; Xie Zheng, 1994). Simultaneously, cross-boundary sub-continental mapping projects actively been carried out Bolviken 1986; Reimann 1998; Salminen 2005). Furthermore, International Mapping Project (IGCP 259) was initiated 1988 under auspices UNESCO compile data global composition (Darnley 1995). Thus, has undertaken globally, but restricted surveys soils, stream sediments, river water easy. 70% covered water. Surveying elucidate mass transfer land sea. Geological Survey Japan, National Institute Advanced Industrial Science Technology, conducted research