Fly-through from the south toward the north along the Mariana Arc. Satellite data (coarser bottom layer) is overlaid with the entire EM300 bathymetry data set (higher resolution top layer) collected on the 2003 and 2004 Ring of Fire expeditions. Data are 2 times vertically exaggerated. Islands are green. Data set resolution varies: EM300 bathymetry (35 meter grid), islands (30 meter grids), and satellite (3500 meter grid). Island data are from the Shuttle Radar Topography Mission, courtesy of USGS and NASA. The satellite altimetry data are courtesy of Smith and Sandwell, 1997. Fly-through courtesy of the NOAA Vents Program.