©2020 Biological and Chemical Oceanography Data Management Office.Acoustic backscatter data in relative decibels (one of three related datasets) from the AL9801 cruise on the R/V Albatross IV in the Gulf of Maine and Georges Bank in 1998 (GLOBEC-Georges Bank project)
These relative decibel values are the result of processing the AL9801 Greene Bomber volume backscatter at 120KHz. They are relative decibel values derived from the backscatter data (in volts) and normalized according to the algorithms in the Matlab routine docurtainnf.m. The algorithm includes the following steps:
These are energy backscattering values.
The values are presented as twenty groups of 20 numbers in each group. Each number is displayed as NNN, where there is an assumed decimal point at NN.N and all values should be negated. That is NNN, is really -NN.N.
See related objects:
cp_depths: https://www.bco-dmo.org/dataset/2393
cp_lat_lon: https://www.bco-dmo.org/dataset/2394
Wiebe, P. (2001) Acoustic backscatter data in relative decibels (one of three related datasets) from the AL9801 cruise on the R/V Albatross IV in the Gulf of Maine and Georges Bank in 1998 (GB project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2001-11-01 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.2392.1 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.