Hydro Survey

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  • Topic: Ordnance Survey, British national grid reference system, Cartography
  • Pages : 71 (5273 words )
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  • Published : March 27, 2013
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Hydrographic Survey Report

Company:

Hjaltland Seafarms Ltd.

Site:

North of Papa

SEPA reference :

CAR/L/1002983

Survey Position:

60o07.735’N 001o20.650’W
(Chart datum WGS 84)
OS grid ref: HU 3654 3844

Survey Date:

15/02/2008-25/03/2008

Report Date:

05/05/2008

Equipment Type:

Aquadopp 400 kHz ADP

Hydrographic Report
North of Papa

Copyright © 2008 Hjaltland Seafarms Ltd.
All rights reserved. The copyright of this document rests with Hjaltland Seafarms Ltd. no citation from it, in whole or in part, or information derived from it, may be published, copied or reproduced without prior written consent from Hjaltland Seafarms Ltd. and ensuring that the source material and Hjaltland Seafarms Ltd. are acknowledged.

i

Hydrographic Report
North of Papa

Contents
List of tables and figures…………………………...……………...……….. iii 1.

Introduction and Survey Programme……………….…………..……

1

2.

Site Description…………………………………...…….…….……..…

2

2.1 Site description………………………...……………………………

2

2.2 Survey………………………………..………………………………

4

3.

Data Processing……………………………...………………………… 7

4.

Accompanying data CD………………………...……………………... 10

5.

Hydrographic Survey……….………………………………………….. 11 5.1 Quality Assurance Statement……………..…………………... 11 5.2 Graphical representation of hydrographic survey….………..

13

5.3 Summary statistics…...…………………………………………

21

6.

References……………………………………………………………… 23

7.

Appendix 1 - Definitions and terminology……….…………………...

24

8.

Appendix 2 - Graphical representation of heading, pitch and roll…

26

9.

Appendix 3 - Graphical representation of average signal strength.. 27

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Hydrographic Report
North of Papa

List of Tables and Figures
Tables
Table 1

Site survey summary table………………………………...…………..……..…….

4

Table 2

Set-up parameters of Aquadopp………………………….……………...………..

5

Table 3

Equipment specifications……………………………………………………………

12

Table 4

Summary statistics of hydrographic survey……………………………………….

21

Table 5

Current speed frequency analysis…………………………………………..….....

22

Table 6

Summary classification of hydrographic characteristics…...………………..…..

23

Figures
Figure 1

Site survey plot…………………………..…………………………………..…….

3

Figure 2(a)

Time-series of mean hourly wind speed for 15-day record………………….….

13

Figure 2(b)

Time-series of mean hourly wind direction for 15-day record……………..……

13

Figure 3

Time-series of speed and water depth for 15-day record …………..………..…

14

Figure 4

Time-series of 3-hr rolling mean speed and water depth for 15-day record…..

15

Figure 5

Time-series of direction and water depth for 15-day record ………….…..……

16

Figure 6

Scatter-plot of east and north vector components for 15-day record ……...….

17

Figure 7

Cumulative vector plot for 15-day record ……………..…………………….……

18

Figure 8

Bar charts of direction frequency analysis for 15-day record……..………..…..

19

Figure 9

Current speed against percentile for 15-day record…..…………….…………...

20

iii

Hydrographic Report
North of Papa

1.

Introduction and Survey Programme

Hjaltland Seafarms Ltd. undertook a hydrographic survey at North of Papa, Shetland (60o07.735’N 001o20.650’W (Chart datum WGS 84): OS grid ref: HU 3654 3844) on to provide information in support of an application to discharge from a marine cage fish farm (made under the Water Environment (Controlled Activities) (Scotland) Regulations 2005). All work was performed according to the requirements of SEPA’s “Regulation and Monitoring of Marine Cage Fish Farming in Scotland Attachment VIII Site and Hydrographic Survey Requirements” Issue No. 2.6, 18th May 2005.

The instruments used for the duration of the survey were deployed on 15/02/2008 and retrieved on 25/03/2008 allowing a survey period of 39 days.

1

Hydrographic Report
North of Papa

2.
2.1...
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