657000 662000 667000 672000 677000 682000 687000 692000 697000 702000 707000 712000 717000 657000 662000 667000 672000 677000 682000 687000 692000 697000 702000 707000 712000 717000 7632000 7637000 7642000 7647000 7652000 7657000 7662000 7667000 7672000 7677000 7682000 7632000 7637000 7642000 7647000 7652000 7657000 7662000 7667000 7672000 7677000 7682000 LEGEND NOTES LOCATION GEODETIC INFORMATION SCALE PROJECT TITLE Colour Banding Multibeam Bathymetry Metres PACIFIC ISLANDS APPLIED GEOSCIENCE COMMISSION Private Mail Bag, GPO, Suva, Fiji Islands www.sopac.org Geodetic datum Ellipsoid Projection Horizontal positioning WGS84 WGS84 UTM Zone 1 South Stand alone GPS TONGA TONGATAPU BATHYMETRY Scale 1 : 75 000 A0 Original SOPAC/EU Project: Reducing Vulnerability of Pacific ACP States DRAWING TITLE NOT TO BE USED FOR NAVIGATION Backdrop is an IKONOS Satellite image Acquisition date 21 December 2000 Date of Survey Acquisition system Collection software Processing software Data presentation Survey vessel Multibeam Bathymetry data by SOPAC/EU: November to December 2003 Reson 8160 Multibeam Echosounder Hypack 4.3 Hypack 4.3A Surfer 8.03 M/V Turagalevu Water depths have been reduced to chart datum (0.75m below MSL) from predicted tidal heights using WXtides software (www.wxtide32.com). 1500 1300 1100 900 700 500 300 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 0km 10km slope angle in degrees Gradient slope angle generated from the 50 m gridded bathymetry. Red indicates steep slopes, while blue indicates near horizontal seafloor. Three dimensional perspective image of Tongatapu, looking northwest. Two times vertical exaggeration Shaded relief map of Tongatapu. Sun illumination from the northwest 665000 670000 675000 680000 685000 690000 695000 700000 705000 710000 7640000 7645000 7650000 7655000 7660000 7665000 7670000 7675000 665000 670000 675000 680000 685000 690000 695000 700000 705000 710000 7640000 7645000 7650000 7655000 7660000 7665000 7670000 7675000 Metres 0km 10km Drawn by: Jens Kruger and Ashishika Sharma. Report Reference: ER111. Drawing No.: ER111.1 200 Contours are shown at 100 metre intervals. 0 2500 5000 7500 10000
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657000 662000 667000 672000 677000 682000 687000 692000 697000 702000 707000 712000 717000
657000 662000 667000 672000 677000 682000 687000 692000 697000 702000 707000 712000 717000
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LEGEND
NOTES
LOCATION
GEODETIC INFORMATION
SCALE
PROJECT TITLE
Colour BandingMultibeam Bathymetry
Metres
PACIFIC ISLANDS APPLIED GEOSCIENCE COMMISSIONPrivate Mail Bag, GPO, Suva, Fiji Islands
www.sopac.org
Geodetic datumEllipsoid Projection
Horizontal positioning
WGS84WGS84UTM Zone 1 South
Stand alone GPS
TONGATONGATAPU
BATHYMETRY
Scale 1 : 75 000
A0 Original
SOPAC/EU Project:Reducing Vulnerability of Pacific ACP States
DRAWING TITLE
NOT TO BE USED FOR NAVIGATION
Backdrop is an IKONOS Satellite imageAcquisition date 21 December 2000
Date of SurveyAcquisition systemCollection softwareProcessing softwareData presentationSurvey vessel
Multibeam Bathymetry data by SOPAC/EU:
November to December 2003Reson 8160 Multibeam EchosounderHypack 4.3Hypack 4.3ASurfer 8.03M/V Turagalevu
Water depths have been reduced to chart datum (0.75m below MSL) frompredicted tidal heights using WXtides software (www.wxtide32.com).
1500
1300
1100
900
700
500
300
100
0
5
10
15
20
25
30
35
40
45
50
55
60
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70
0km 10kmslope angle in degrees
Gradient slope angle generated from the 50 m gridded bathymetry.Red indicates steep slopes, while blue indicates near horizontal seafloor.
Three dimensional perspective image of Tongatapu, looking northwest.Two times vertical exaggeration Shaded relief map of Tongatapu.
Sun illumination from the northwest
665000 670000 675000 680000 685000 690000 695000 700000 705000 710000
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665000 670000 675000 680000 685000 690000 695000 700000 705000 710000
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Metres
0km 10km
Drawn by: Jens Kruger and Ashishika Sharma. Report Reference: ER111. Drawing No.: ER111.1
200 Contours are shown at 100 metre intervals.
0 2500 5000 7500 10000
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