Fisher, K.E.1 and Wiebe, P.H.2
1Los Alamos National Laboratory, Los Alamos, NM 87545
2Biology Department, Woods Hole Oceanographic
Institution, Woods Hole, MA 02543
Having gathered thousands of kilometers of acoustics data using the
Greene Bomber tow-body during US GLOBEC Northwest Atlantic broad-scale
survey cruises, we are now interested in applying pattern
classification techniques toward accurate biomass estimates.
Biomass fields have been compiled from Bongo tows for stations and
midpoints. We are now at the stage of looking at the patchiness in
the 120 kHz acoustic backscatter observations at scales ranging from
120 m to 1.2 km during the last Georges Bank broad-scale cruise
(AL9906). Here, we present 2-D wavelet transforms of data between
Station 5 and Station 18 on the Southern Flank. This is work in
progress. We aim to present an analysis of patch structure in
relation to Bongo biomass for the AGU-OS meeting (Portland) after
determining how the scaling characteristics determined through
wavelet analysis of acoustic backscatter relate to biomass levels
observed around Georges Bank.