USGS CMG O-1-99-SC Metadata

Identify the landslide and earthquake hazards as well as related ground 
deformation processes that have great potential to impact the social and 
economic well being of the inhabitants of the Southern California coastal 
region.

High-resolution multichannel (MCS) and Huntec seismic-reflection profiles to 
image the faults and to use dating of sediment -core samples to establish timing 
and rates of movement on the faults.

Continue surveying (the second of four planned data collection cruises)
                  the coastal zone between Santa Monica and San Diego; MCS and Huntec 
        data
         will be used to identify the active faults in the nearshore zone and to
         assess the seismic hazards expected.

California continental borderland: Pt Conception to San Dieigo, CA

Lines with tags a, b, c, etc. are all planned lines.
a, b, etc. were added to the full line name
when something in the lab changed during the line
(i.e., for mcs, the blue screen of death or some other problem,
or for huntec, if the paper ran out or the recording disks ran out).
a and b indicators were used independently for mcs and huntec,
so they will can not be correlated between the two systems.

Once or twice we did the a planned line in two segments on different days
(I think 247,247a or 245,245a is one time this happened),
but this will show up on with the time indicators.

The tags "dl" or "dm" mean dog legs, between planned lines.
MCS may have been on during this time, but probably were not recorded.
"dm" was used as a,b was noted above.

99l:  planned line on the 085 degree or 040 degree trends
(I'm not sure of the actual orientation of the lines, so don't quote me.)
In general (but not every time) MCS was on for these.
There are a couple of exceptions.

99n:  Huntec-only lines run at night in any orientation.

Normark, William R., Reid, Jane A., Sliter, Ray W., Holton, David, Gutmacher, 
Christina E., Fisher, Michael, A., and Childs, Jonathan R.,
1999, Cruise report for O1-99-SC: Southern California earthquake hazards 
project:
U.S. Geological Survey Open-File Report 99-560, 60 p., URL:
http://geopubs.wr.usgs.gov/open-file/of99-560/of99-560.pdf
  
Fisher, Michael, Normark, William, Langenheim, Victoria, Calvert, Andrew and 
Sliter, Ray, 2004,
Marine geology and earthquake hazards of the San Pedro shelf region, Southern 
California:
U.S. Geological Survey Professional Paper 1687, 39 p., 2 plates, URL:
http://pubs.er.usgs.gov/usgspubs/pp/pp1687