Page 474 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed

Index
A
Abandoned Shipwreck Act 1987, 403 Accuracy
definition, 147
overall specification with Site Surveyor,
125–126
Site Surveyor, 123–124
in stereophotography, 197–198, 200
Acoustic surveying systems
echo sounder, 74
HMS Pandora wreck site, 133–142 multibeam sonar system, 75–76 overview, 131–132
Roman bridge at Maastricht, 142–145 scanning sonar, 74–75
side-scan sonar, 76–81
sonar mosaic, 81–82
sub-bottom profiler, 82–84
technique comparison, 145–154
Active bubble tube, 113f
Admirality Charts, 18–19
Admirality Manual of Hydrographic
Surveying
sextant principles, 34
sextant resection strengths, 36f Aerial magnetometer, 69–70 Aerial photography
in site research, 19 transit identification, 29 for visual searches, 61
Aerial Sketchmaster, 303 Airlift, in excavation
air compressor, 252
buoyancy, 252
hand fanning, 254f
hand feeding, 253–254 overview, 251–252
in shallow water, 254–255 spoil or overburden, 252–253 types, 253f
Air probe, 258
Algemeen Rijksarchief, 16 Amateur divers, and legislation, 400 Amphora tags
PhotoModeler survey, 188f, 208–209
Rhinoceros, 201 Amsterdam wreck site artifact context, 350
close-plot magnetometer survey, 159, 160f metal detector survey, 161
and sub-bottom profiler, 82
Ancient Monuments Act 1882, 402 ANCODS, see Australian–Netherlands
Agreement on Old Dutch Shipwrecks Angle-measuring device, 94–95 Archaeological Diving Unit United
Kingdom, 402 Archaeology definition, 346 Archaeonautica, 391 Archival research
archivists, 18
associated problems, 17–18 catalogs, 16
information sources, 16 levels of research, 15–16 secondary sources, 18 shipwreck location, 14–15
453