New seismic images of the Cascadia subduction zone from cruise SO108--ORWELL
Flueh ER, Fisher MA, Bialas J, Childs JR, Klaeschen D, Kukowski N, Parsons T, Scholl DW, ten Brink U, Trehu AM, Vidal N. 1998. New seismic images of the Cascadia subduction zone from cruise SO108--ORWELL. Tectonophysics. 293:69-84
From the Abstract: "In April and May 1996, a geophysical study of the Cascadia continental margin off Oregon and Washington was conducted aboard the German R/V Sonne. This cooperative experiment by GEOMAR and the USGS acquired wide-angle reflection and refraction seismic data, using ocean-bottom seismometers (OBS) and hydrophones (OBH), and multichannel seismic reflection (MCS) data. The main goal of this experiment was to investigate the internal structure and associated earthquake hazard of the Cascadia subduction zone and to image the downgoing plate. Coincident MCS and wide-angle profiles along two tracks are presented here. The plate boundary has been imaged precisely beneath the wide accretionary wedge close to shore at ca. 13 km depth. Thus, the downgoing plate dips more shallowly than previously assumed."
- Type
- Journal Article
- Authors
- Flueh, Ernst; Fisher, Michael; Bialas, Joerg; Childs, Jonathan; Klaeschen, Dirk; Kukowski, Nina; Parsons, Tom; Scholl, David; ten Brink, Uri; Trehu, Anne; Vidal, Neus
- Units
- OLYM
- Keywords
- Cascadia subduction zone, earthquake hazard, Tectonics