SOUND VELOCITY DATA

CTD/SVP casts were taken for sound velocity from different sites.

Two probes were used, a RESON Mod. XXX Direct measuring device and the Valeport Model. XXX which gives the direct measurement of SV other than many parameters, including salinity (conductivity) and temperature, that provide another value for SV using well known formulae (i.e. Chen and Millero, UNESCO).

The position of the CTD and SVPstations are shown in Fig. 4, and are reported in Table 5.

Table 5: SVP and CTD Stations.

ID	DATE	LON	LAT
SVP-01
CTD-02	2006-02-14	31:49.88	-45:44.13
CTD-03	2006-02-17	26:31.06	-52:35.83
CTD-04

A RESON Mod.SVP 70 direct measuring probe located in the proximity and flush with the multibeam sonar heads provided the necessary real time data for beam forming and detection on the sonar Processors. The probe failed to work on 2006-03-07.

The Sound Velocity profiles were used for real-time acquisition and post-processing.