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Data Acquisition and Processing Report (DAPR) - Center for Coastal ...

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Sound Velocity Measured<br />

Error: 0.05<br />

Definition: Sound Velocity Measured is the st<strong>and</strong>ard deviation of<br />

the measurement of sound velocity readings in<br />

meters/second.<br />

Discussion: Sound Velocity Measured is based on SEACAT<br />

manufacturer specifications.<br />

Surface<br />

Error: 0.05<br />

Definition: Surface is the st<strong>and</strong>ard deviation of the measurement<br />

of surface sound speed readings in meters/second.<br />

Discussion: This value is currently being researched. In the<br />

meantime, NOAA Ship NANCY FOSTER will use<br />

0.05, which is what NOAA Ship THOMAS<br />

JEFFERSON used <strong>for</strong> its Simrad SSVS.<br />

Tide Measured<br />

Error: 0.05<br />

Definition: Tide Measured is the st<strong>and</strong>ard deviation of the<br />

measured tide values in meters.<br />

Discussion: Tide Measured is based on CO-OPS calculations.<br />

Tide Zoning<br />

Error: 0.3<br />

Definition: Tide Zoning is the st<strong>and</strong>ard deviation of the tide values associated<br />

with zoning in meters.<br />

Discussion: Tide Zoning is based on general CO-OPS calculations.<br />

Offset X<br />

Error: 0.02<br />

Definition: Offset X is the st<strong>and</strong>ard deviation of the measured X<br />

offsets of the vessel.<br />

Discussion: Offset X is the accuracy limit of whatever survey<br />

method was used to survey the vessel.<br />

Offset Y<br />

Error: 0.02<br />

Definition: Offset Y is the st<strong>and</strong>ard deviation of the measured X<br />

offsets of the vessel.<br />

Discussion: Offset Y is the accuracy limit of whatever survey<br />

method was used to survey the vessel.<br />

61

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