IEDA: Marine Geoscience Data System IEDA
Data Sets
Expeditions / Compilations
Roger Revelle

Processed

Processed Data Sets
Sort by:
Processed Acoustic Backscatter and Swath Bathymetry Data from the Izu-Bonin-Mariana Volcanic Arc acquired during R/V Roger Revelle expedition RR1413 (2014)
Platform Info
Roger Revelle
SIO
Device Info
Sonar:Multibeam
Kongsberg:EM122
Locale
IBM:Mariana
VolcanicArc
File Format
MBSystem
Quality
2
Details
Multibeam data were collected between ROV dives and during bad weather when no other operations were possible. Over 31,000 km2 of seafloor were mapped with the EM122 multibeam system onboard R/V Revelle during the RR1413 SRoF’14 – Ironman expedition. Due to weather and mechanical issues with the ROV cable, there were many instances when multibeam mapping was the only operation that could be executed. Weather also affected the quality of the bathymetry data, and there are large segments of mapped data that are poor quality due to bad weather (the area to the east of Ahyi is an example). In addition to bad weather and high seas degrading the quality of the bathymetry data, there appeared to be some inherent problems with the EM122 system on the R/V Revelle. There was some discussion with the marine technician at sea regarding the system calibration numbers entered by Scripps technicians, and whether or not the values were given the proper sign (positive or negative). That issue was unresolved at the end of the expedition.
Moyer, Craig
WWU
Chadwick, William
NOAA:PMEL
Raw Acoustic Backscatter and Swath Bathymetry Data from the Izu-Bonin-Mariana Volcanic Arc acquired during R/V Roger Revelle expedition RR1413 (2014)
Platform Info
Roger Revelle
SIO
Device Info
Sonar:Multibeam
Kongsberg:EM122
Locale
IBM:Mariana
VolcanicArc
File Format
MBSystem
Quality
0
Moyer, Craig
WWU
Chadwick, William
NOAA:PMEL
NOAA:NCEI
Expand