Figure F14. Location of seismic station coverage in the northwest Pacific region. At least five major plates with consuming boundaries interact in the northwest Pacific, causing subduction, backarc spreading, slab collisions, terrane accretion, and island arc development. Blue and yellow circles = land seismic stations. Orange circles = International Ocean Network (ION) seafloor observatories JT-1 and JT-2 (Japan Trench), WP-2 (northwest Pacific), and Site 1201 (this site). OHP = Ocean History Panel, IRIS = Incorporated Research Institutions for Seismology. TJN = Taejon, South Korea; INU = Inuyama, Japan; ISG = Ishigakijima, Japan; OGS = Chichijima, Japan; MCSJ = Minamitorishima, Japan; BAG = Baguio, Philippines; PATS = Ponphei, Micronesia; JAY = Ayapura, Indonesia; PMG = Port Moresby, Papua New Guinea.