FN Archimer Export Format
PT J
TI Comparison of airborne lidar with echosounders: a case study in the coastal Atlantic waters of southern Europe
BT 
AF CARRERA, Pablo
   CHURNSIDE, J.H.
   BOYRA, G
   MARQUES, V
   SCALABRIN, Carla
   URIARTE, A
AS 1:1;2:2;3:3;4:4;5:5;6:3;
FF 1:;2:;3:;4:;5:PDG-DOP-DCB-STH-LTH;6:;
C1 Museo Mar Galicia, Vigo 36208, Spain.
   NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA.
   Fundac AZTI, Pasaia 20110, Spain.
   IPIMAR, P-1400 Lisbon, Portugal.
   IFREMER, Lab Sete, F-34203 Sete, France.
C2 MUSEO MAR GALICIA, SPAIN
   NOAA, USA
   AZTI, SPAIN
   IPIMAR, PORTUGAL
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-STH-LTH
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
IF 1.469
TC 31
UR https://archimer.ifremer.fr/doc/2006/publication-2139.pdf
LA English
DT Article
CR JUVESU98
   JUVESU99
   SURFET
BO Gwen Drez
DE ;West Iberian Peninsula;Sardine;Recruitment;Echosounder;Bay of Biscay;Anchovy;Airborne lidar
AB The feasibility of using airborne lidar (Light Detection and Ranging) was studied to assess the early juvenile fractions of the main pelagic fish species of the coastal Atlantic waters of southern Europe (anchovy, sardine, mackerel, and horse mackerel). Field comparisons with more established echosounder methods were undertaken in the summers of 1998 and 1999 during the recruitment period of sardine and anchovy in the selected areas, in the presence of a variety of oceanographic and environmental conditions. Backscattered energies as well as the types of target recorded by both devices were compared. The distributions of energies and the shape of the targets were generally similar for both techniques, with moderate numerical correlation between sensors, demonstrating the potential of lidar for assessment of anchovy, sardine, and juvenile mackerel. However, differences in received backscattering energy were found, especially in the presence of certain plankton assemblages (to which lidar is more sensitive) and isolated schools with large vertical dimensions (for which shadowing is more significant for light than sound). Experimental ad hoc optical reflectivity measurements of fish and plankton are proposed to discriminate these two types of targets. In addition, an improvement on lidar implementation and data processing is suggested to achieve fish abundance estimates. (c) 2006 International Council for the Exploration of the Sea. Published by Elsevier Ltd. All rights reserved.
PY 2006
PD NOV
SO ICES Journal of Marine Science
SN 1054-3139
PU Elsevier
VL 63
IS 9
UT 000242375100017
BP 1736
EP 1750
DI 10.1016/j.icesjms.2006.07.004
ID 2139
ER

EF