Page 157 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed
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136 Maritime Archaeology: A Technical Handbook, Second Edition
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                                                                                                                                                                                                         Figure 4.20 Temperature variation over a number of days noted on the Pandora site.
average temperature for the whole period of the dive was likely to result in significant errors in the distance calculations. As a result, the software was modified to use the temperature recorded at the time of each reading so that the velocity was corrected for temperature at each individual reading.
3. Pressure Considerations
It was known that the Pandora site was subjected to a considerable tidal range. Initially it was thought that the tidal variation would be insignificant during the course of a dive, particularly as the HPASS calculated relative depths. However, during the analysis of these data, it became apparent that the tide influenced the measurements. As the tide was not monitored during
Temp ∞C















































































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