The Mixing Zephyr Pages

Mixing Zephyr Program
Dive 2934
Starboard Observer Narrative

Starboard Observer: Allison

Phillip Allison pilot: Blee Williams

Dive 2934 starboard: Phillip Allison

June 10,1995 port: Russ McDuff

Starboard observations based on notes taken during dive and from dive tapes.

Dive Objectives 1) Deploy camera #1 and temperature probe #2 at Milli-Q or Canneport

2) Collect fluid samples at Milli-Q (markers A1 and A4)

3) Survey Milli-Q for J-hookable flange

4) Survey Grotto, Lobo, and Hulk for camera deployment sites and J-hookable flanges

5) Perform mesotech survey of Bastille complex

Time Hdg Brg X Y Z Comments

845 Approximate launch time

1003 276 090 4557 4544 2158 Reached bottom near west wall; jumbled and broken pillow lava covering sea floor; sediment; left for Milli-Q

1025 043 090 4895 5964 2182 Located marker 1E; N. side of Milli-Q

1026 108 090 4891 5945 2184 Tubeworm field

1029 142 000 4892 5944 2193 Tubeworm fields

1031 154 4902 5941 2188 Located A1 marker; tubeworm fields below

1032 4905 5945 Many tubeworms all around

1034 180 025 4909 5942 Black smoker on Milli-Q

1037 238 4915 5938 2186 Located camera spot; marker A4 spotted about 4 meters away by pilot

1040 235 045 4915 5935 2187 Black smoker

1053 335 4911 5932 2186 Began sampling A4; Blee had some difficulty due to smoker nearby to starboard

1104 331 4911 5931 2186 Attempted port outer major --359ûC; failed, the probe pulled out of the orifice and Russ lost communications; blew the sample

1108 333 4910 5932 2188 Started second attempt at sampling

1116 335 4911 5932 2186 Fired port inner major -- 364ûC

1118 335 4911 5932 2186 Fired port gas tight -- 363ûC

1129 Began camera deployment

1137 234 4914 5936 2187 Camera deployed; aimed camera at smoker; sub at H 240û, camera and A4 at B 0û, aimed 90û from A4

1147 184 4911 5942 2187 Changed camera tapes

1150 196 4911 5940 2187 Camera lights went off (exactly 1150:00)

1156 215 4912 5940 2187 Temperature probe placed in same smoker, opposite the camera with respect to the smoker

1201 173 4904 5944 2191 Located marker A1; many tubeworms seen to starboard

1208 214 4908 5938 2185 Began checking temperature in the rear smoker at A1

Phillip Allison

Dive 2934

June 10, 1995

1212 224 4909 5940 2189 Fired starboard outer major -- 360ûC

1217 227 4908 5940 2189 Fired starboard inner major -- 360ûC

1220 227 4908 4938 2189 Fired starboard gas tight -- 360ûC

1221 4908 5938 Began search for J-hookable flanges in a counter-clockwise direction; no success

1229 300 4916 5943 2186 Left Milli-Q to trim sub

1231 320 060 4908 5956 2191 Fissure observed

1232 4906 5966 2194 Set down to trim sub and eat lunch

1239 345 4917 5982 2190 Set out for Grotto, located marker CL (bread crumb), with others off to left

1240 018 4912 6000 2190 Traveling over broken pillars, well sedimented

1244 013 110 4941 6093 2193 Outcropping observed out starboard window

1244 014 4942 6099 2193 Many old dive weights spotted on floor

1245 029 4944 6110 2193 Drop off parallel to sub

1246 340 4949 6124 2193 Edifice displayed on 3-chip camera

1246 328 4949 6127 2193 Located Grotto; huge dry flanges, diffuse flow

1248 314 090 4944 6135 2190 Many dead tubeworms

1249 273 000 4941 6137 2188 Smoker spotted, dry flange, good camera spot

1255 237 4932 6148 2184 Piloting through much black smoke

1257 078 070 4923 6140 2187 Located old marker: horizontal, square, covered with sediment

1312 312 4952 6142 2188 Flat area located for camera

1313 310 4951 6143 2188 Located missing thermoelectric generator; extensive footage taken with 3-chip camera

1317 060 4940 6141 2186 Dropped marker BA on the instrument

1320 065 4938 6140 2186 Began circling Grotto to survey for J-hookable flanges

1331 007 4909 6123 2194 Round marker #47 spotted on sea floor below sub to starboard

1334 076 080 4918 6139 2185 Same horizontal marker spotted again

1336 078 045 4922 6145 2184 Large smoker

1338 4935 6145 2182 Changed tapes

1339 212 4945 6138 2173 Began mesotech survey of Grotto area

1428 030 4922 6143 2157 Traveled through heavy smoke

1445 309 4876 6149 2168 Dropped weights, began ascent

1600 Approximate surfacing time


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