Page
174
of
254
Version
6.3
Rev
r012
Date
05-11-2022
Part No. 96000001
Figure 184: Concept of refraction due to different sound velocities in the water column
The velocity of sound in water varies both horizontally and vertically. It cannot be assumed that the
velocity of sound in the water column remains constant over large areas or throughout the day in a
more local area. The main influences on sound velocity are Conductivity (salinity), Temperature, and
Depth (pressure).
1 ° C change in Temperature
=
4.0 m/sec change in velocity
1 ppt change in Salinity
=
1.4 m/sec change in velocity
100 m change in Depth (10 atm’s pressure)
=
1.7 m/sec change in velocity
Figure 185: Sound velocity profile
Содержание 2026
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Страница 158: ...Figure 174 Smooth log information copied from a real time survey log...
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Страница 247: ...Page 247 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 225 SIM Stack Outline...
Страница 249: ...Page 249 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 227 Locking Ring type Deck Lead...
Страница 250: ...Page 250 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 228 I2NS Type 42 IMU Dimensions...
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Страница 254: ...Page 254 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 232 Dual Head Mount Offsets...