An active source, 3-D seismic (refraction/wide angle reflection) experiment was completed at the ultra-slow spreading Southwest Indian Ridge during the 6th leg of the CHINA RIDGE cruise (DY115-21) on board R/V Dayang Yihao
Ridge Crest News
First Active Hydrothermal Vent Fields Discovered at the Equatorial Southern East Pacific Rise
In August-September 2008, the third leg of the 2008 Chinese DY115-20 expedition on board R/V DayangYihao has successfully discovered, for the first time, active hydrothermal vent fields on the fast-spreading Southern East Pacific Rise (SEPR) near the equator. This expedition follows the work of a 2005 expedition by R/V DayangYihao, during which water column turbidity anomalies were measured in the region.
Australian cruise SS07-2008 in the northern Lau Back-arc Basin
The InterRidge Office would like to highlight an Australian research cruise currently underway in the northern Lau Back-arc Basin (NLB). The SS07-2008 cruise, led by Chief Scientist Richard Arculus from Australian National University, will be in two legs from 30 April - 7 June 2008 on R/V Southern Surveyor. The objective of the first leg will be to survey the bathymetry, magnetic characteristics, petrology, hydrothermal activity, and hence origins and evolution of two of four spreading centers within this region (Northwest Lau [NWLSC] and Niuafo’ou [NSC]), which are essentially unstudied.
Preliminary report on the Hakuho-maru Cruise KH-07-4 Leg 2, Southwest Indian Ridge
The InterRidge Office has just received news from a January 2008 cruise on board R/V Hakuho-maru to the Southwest Indian Ridge near the Marion hotspot. We thank Dr. Nobukazu Seama, InterRidge Steering Committee Member from Japan, for providing a summary of the cruise objectives and sampling. Please visit the InterRidge-Japan webpage for ship track and sampling locations:
http://ofgs.ori.u-tokyo.ac.jp/~intridgej/report_html/KH07-4-2/KH07-4-2.h...
