- Bathymetric information occurs in the
CMG InfoBank
in a variety of formats, including:
scattered < Activity-ID >.3## files containing time sequential information along ship tracks. swath extracted as files containing across-track depths (multiple depths at a given time). gridded evenly spaced information typically derived from the above information types vector/polygon bathymetry contours from either manual or computer interpretations of the above information types analog physical records, usually electrostatic or photostatic rolls metadata information about bathymetric analog paper rolls, inventory of gear, deployment of gear, operation of gear, magnetic tapes, and paper printer listings - InfoBank bathymetric scattered data file names:
<Activity-ID>.30# Raw uncorrected depths <Activity-ID>.31# Raw travel-times <Activity-ID>.32# Edited with two-way travel-times, uncorrected and corrected depths <Activity-ID>.33# Edited two-way travel times and uncorrected depths <Activity-ID>.35# R/V Farnella edited/Carter Table corrected depths - InfoBank bathymetric metadata file names:
<Activity-ID>.10khz 10 khz systems metadata <Activity-ID>.11khz 11 khz systems metadata <Activity-ID>.12khz 12 khz systems metadata <Activity-ID>.200khz 200 khz systems metadata <Activity-ID>.200khz7khz 200 khz + 7 khz systems metadata <Activity-ID>.3dot5khz 3.5 khz systems metadata <Activity-ID>.48khz 48 khz systems metadata <Activity-ID>.4dot5khz 4.5 khz systems metadata <Activity-ID>.7khz 7 khz systems metadata <Activity-ID>.bathgrav bathymetry + gravity systems metadata <Activity-ID>.bathgravmag bathymetry + gravity + magnetics systems metadata <Activity-ID>.bathgravmagnav bathymetry + gravity + magnetics + navigation systems metadata <Activity-ID>.bathgravnav bathymetry + gravity + navigation systems metadata <Activity-ID>.bathmagnav bathymetry + magnetics + navigation systems metadata <Activity-ID>.bathnav bathymetry + navigation systems metadata <Activity-ID>.bathymetry bathymetry (only) systems metadata <Activity-ID>.digitrack digitrack systems metadata <Activity-ID>.echosounder echo sounder systems metadata <Activity-ID>.multibeam multibeam systems metadata <Activity-ID>.subbottomprofiler subbottom profiler systems metadata - The <Activity-ID>.3## files do not include navigation.
- Navigation must be obtained from <Activity-ID>.0## or <Activity-ID>.6## files.
- Navigation should therefore also be extracted when you retrieve these files.
- A "time" key is associated with each record for correlation with other scattered information datasets.
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Before you can walk on water, you've got to know where the rocks are.
