The Broadband Ocean Bottom Seismometer OBSBKA301 was deployed near MJ03A during Visions'14. The seismometer was placed into a caisson, then surrounded with silicone beads to solidify its position. Photo credit: NSF-OOI/UW/CSSF; Dive R1739; V14.
A broadband seismometer installed inside a buried cassion at Southern Hydrate Ridge by the ROV ROPOS. A follow-on dive will fill the caisson with silica beads, which dampens noise. The broadband and low frequency hydrophone is installed here to detect both large and small earthquakes that may impact the release of methane gas into the hydrosphere. Credit: UW/NSF-OOI/CSSF; ROPOS Dive R1779; V14.
The broadband seismometer (left) and low frequency hydrophone (right) are installed on the floor of Axial Seamount at the Central Caldera Site. The 7-function manipulator of ROPOS is connecting the extension cable to the medium powered junction box. The white bags inssulate the broadband from acoustic "noise" associated with curents flowing over the instrument.
A broadband seismometer installed at Eastern Caldera is coupled to a low-frequency hydrohone. Bags of pea gravel decrease “noise” from currents. Credit: UW/NSF-OOI//CSSF; ROPOS Dive R1722; V14.
A broadband seismometer and hydrophone are rigged for installation at the summit of Axial Seamount during VISIONS’14. University of Washington, V14.
This broadband seismometer is waiting to be deployed inside a caisson on the seafloor. It was deployed in 2003 during a UW program funded by the W.M. Keck Foundation.
