Detailed visual seabed survey at drilling site 7218/11-1
Detailed visual seabed survey at drilling site 7218/11-1
Detailed visual seabed survey at drilling site 7218/11-1
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5 Results and discussion<br />
5.1 General observ<strong>at</strong>ions<br />
A total of 1950observ<strong>at</strong>ionswere made,and recordedasevent fixeson the <strong>survey</strong>log. Thesewere<br />
distributedwithin c<strong>at</strong>egoriesasgivenin Section2.4.2.<br />
RecordedROVdepths variedfrom approxim<strong>at</strong>ely310 – 335 m (Figure19). Someminor troughsand<br />
depressionsare evident in the central to upper part of the <strong>survey</strong>area, notably also closeto the<br />
SPUDloc<strong>at</strong>ion. We estim<strong>at</strong>ethe ROVflying height to be between 1-2 m abovethe seafloor, such<br />
th<strong>at</strong> the actual w<strong>at</strong>er depths should be adjustedaccordingly.Despitethis, the chart givesa good<br />
represent<strong>at</strong>ionof the rel<strong>at</strong>ivevari<strong>at</strong>ionin bottom topographyacrossthe studyarea.<br />
Figure19. Visualrepresent<strong>at</strong>ionof depthsrecordedduring the <strong>survey</strong>,basedon the <strong>survey</strong>log. Theplanned<br />
<strong>drilling</strong>loc<strong>at</strong>ion<strong>at</strong> Darwinisshownby a yellowstar.<br />
<strong>Detailed</strong> <strong>site</strong> <strong>survey</strong> <strong>at</strong> PL531 Darwin<br />
Akvaplan-niva AS Rapport 6051 - 1 25
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