Page 7 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed
P. 7
vi
Contents
III.
IV.
V. VI.
VII.
Visual Search Techniques
...... .
...... .
...... .
...... .
...... .
...... .
...... .
...... .
...... .
...... .
...... .
...... .
Systems ...... . ...... . ...... . ...... . ...... . ...... . ...... . ...... . ...... .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
.. .
F. Theodolite and Distance Measuring System . . . . . . . . . . 41
G. Electronic Position Fixing Systems
H. Total Station . . . . . . . . . . . . . . . . .
I. Radar . . . . . . . . . . . . . . . . . . . . . . .
J. Global Positioning System (GPS) .
. ................ 41 . ................ 42 . ................ 42 . ................ 43 . ................ 50 . ................ 50 . ................ 51 . ................ 55 . ................ 55 . ................ 57 . ................ 57 . ................ 57 . ................ 58 . ................ 61 . ................ 62 . ................ 62 . ................ 74 . ................ 74 . ................ 74 . ................ 74 . ................ 75 . ................ 76 . ................ 81 . ................ 82 . ................ 84 . ................ 84
A. Introduction . . .
B. Swim-Line . . . .
C. Circular Search
D. Towed Search .
E. GPS Search . . .
.. .
.. .
.. .
.. .
.. .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Other Visual Techniques
A. Submersibles . . . . .
B. ROV’s . . . . . . . . . .
C. Aerial Photography
Electronic Techniques . A. Magnetometer . . . .
B. Other Towed Detector
Acoustic Systems . . .
A. Echo Sounder . .
B. Scanning Sonar .
C. Multibeam Sonar
D. Side-Scan Sonar .
E. Sonar Mosaic . . .
.. .
.. .
.. .
.. .
.. .
.. .
.
.
.
.
.
.
.
.
.
F. Sub-Bottom Profiler Other Methods . . . . . . . A. Local Knowledge . . .
Chapter 4
Conventional Survey . . . . . . . . . . . . . . . . . . . . . . . . .
87
. 87 . 88 . 91 . 91
94 . 95 . 96 100 100
101
I. Objectives of Predisturbance Survey . ........ A. Basic Survey . . . . . . . . . . . . . . . . . ........ II. Two-Dimensional Surveying Techniques . . . . . . .
A. Distance-Angle or Radial Survey . . . . . . . . .
B. Right Angle Survey . . . . . . . . . . . . . . . . . . . .
. ...... .
. ...... .
. ...... .
. ...... .
....... .
C. Retangular Measuring Systems Offset Survey ...... .
D. Trilateration . . . . . . . . . . . . . . . . . . . . . . . . . III. Three-Dimensional Survey Techniques . . . . . . .
A. General . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B. Three-Dimensional Rectangular Coordinate Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . ...... .
.
.
.
....... .
....... .
....... .
