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Summary for Field Activity Number 1984-006-FA

Alternate Leg ID: 84-1

Area of Operations: Enewetak Atoll, Enewetok, Marshall Islands, Trust Territory of the Pacific Islands (TTPI), North Pacific

Dates: June 10, 1984 to July 08, 1984

Objectives: Geologic investigations of two nuclear craters.

Type of Activity: Sea floor mapping

Information to be derived:

Summary: This operation was the first of several phases of investigation of two nuclear test craters, OAK and KOA, in the northern part of Enewetak atoll. Data were acquired in parallel-line grids having nominal line spacings of 26 km (85 ft) for bathymetry, and 76 m (250 ft) for sidescan sonar and sub-bottom (Huntec boomer) profiles. Tie-line data were also acquired. Additional bathymetric data were acquired by small boat. The ship was operated only during daylight hours because hazards from shallow-water and proximity to the reef required maximum visibility. A mosaic of the sidescan sonar images was constructed from the field data during the operation. A tide gauge was deployed in each of the craters for bathymetric corrections although only the KOA gauge appears to have operated successfully. Bathymetry data: 350 km; Sidescan sonar data: 210 km; Sub-bottom profiler (Huntec) data: 115 km.

USGS Project Number: PEACE

Contact: Jim Robb (jrobb@usgs.gov)

InfoBank: uses the identifier E-2-84-CP. Visit this site for more information.

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
EGABRAG II

The following materials for this field activity are available in the Information Archives:

Paper seismic/sidescan bottom profiles:

Inventory #LinesFolderStart TimeEnd TimeProfile TypeRemarks
KOA 53022:17 06/30/198422:30 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53122:35 06/30/198422:48 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 8222:35 06/28/198422:57 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53222:58 06/30/198423:10 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 21022:58 07/03/198423:19 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53323:15 06/30/198423:29 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 5623:20 06/26/198423:39 06/26/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 21123:30 07/03/198423:44 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53423:34 06/30/198423:47 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20921:20 07/03/198423:47 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20621:31 07/02/198401:02 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW-APPROACH
OAK: 06//198402:53 06//1984 SBP- ENEWETAKHUNTEC-DEEP TOW-TEST BEFORE LINE 41
BETWEEN 100&529: 06/30/1984: 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW-TEST&RECALIBRATION
017820AK 24 00123:32 06/21/198400:00 06/22/1984 SSS- ENEWETAK
017820AK 25 00102:31 06/22/198402:57 06/22/1984 SSS- ENEWETAK
01782OAK 22 00122:13 06/21/198422:48 06/21/1984 SSS- ENEWETAK
017820AK 23 00122:59 06/21/198423:21 06/21/1984 SSS- ENEWETAK
017820AK 2299 00121:41 06/23/198422:10 06/23/1984 SSS- ENEWETAKRESTART
017830AK 26 00203:02 06/22/198403:28 06/22/1984 SSS- ENEWETAK
017830AK 27 00203:39 06/22/198404:05 06/22/1984 SSS- ENEWETAK
017830AK 28 00204:38 06/22/198405:03 06/22/1984 SSS- ENEWETAK
017830AK 30 00221:20 06/22/198421:44 06/22/1984 SSS- ENEWETAK
017830AK 31 00221:55 06/22/198422:20 06/22/1984 SSS- ENEWETAK
017840AK 34 00323:45 06/22/198400:00 06/23/1984 SSS- ENEWETAK
017840AK 34 00300:48 06/23/198400:56 06/23/1984 SSS- ENEWETAK
017840AK 35 RESTART 00301:09 06/23/198401:31 06/23/1984 SSS- ENEWETAK
017840AK 32 00322:43 06/22/198423:04 06/22/1984 SSS- ENEWETAK
017840AK 33 00323:13 06/22/198423:38 06/22/1984 SSS- ENEWETAK
017850AK 36 00401:40 06/23/198401:59 06/23/1984 SSS- ENEWETAK
017850AK 37 00402:11 06/23/198402:30 06/23/1984 SSS- ENEWETAK
017850AK 38 00402:50 06/23/198403:04 06/23/1984 SSS- ENEWETAK
017850AK 39 00403:13 06/23/198403:30 06/23/1984 SSS- ENEWETAK
017850AK 40 00403:40 06/23/198403:52 06/23/1984 SSS- ENEWETAK
017860AK 51 ABORTED 00501:03 06/25/1984: 84/06/1900 SSS- ENEWETAK
017860AK 48 00523:58 06/23/198400:15 06/24/1984 SSS- ENEWETAK
017860AK 49 00500:22 06/24/198400:33 06/24/1984 SSS- ENEWETAK
017860AK 50 00500:38 06/24/198400:50 06/24/1984 SSS- ENEWETAK
017860AK 51 RESTART 00520:42 06/26/198421:03 06/26/1984 SSS- ENEWETAK
017860AK 44 00520:55 06/23/198421:21 06/23/1984 SSS- ENEWETAK
017860AK 45 00522:22 06/23/198422:42 06/23/1984 SSS- ENEWETAK
017860AK 46 00522:54 06/23/198423:18 06/23/1984 SSS- ENEWETAK
017860AK 47 00523:30 06/23/198423:50 06/23/1984 SSS- ENEWETAK
017870AK 64 00620:51 06/27/198421:10 06/27/1984 SSS- ENEWETAK
017870AK 52 00621:10 06/26/198421:31 06/26/1984 SSS- ENEWETAK
017870AK 65 00621:20 06/27/198421:44 06/27/1984 SSS- ENEWETAK
017870AK 53 00621:38 06/26/198421:54 06/26/1984 SSS- ENEWETAK
017870AK 66 00621:50 06/27/198422:13 06/27/1984 SSS- ENEWETAK
017870AK 5399 00621:59 06/26/198422:15 06/26/1984 SSS- ENEWETAK
017870AK 54 00622:30 06/26/198422:44 06/26/1984 SSS- ENEWETAK
017870AK 67 00622:23 06/27/198422:49 06/27/1984 SSS- ENEWETAK
017870AK 55 00622:52 06/26/198423:08 06/26/1984 SSS- ENEWETAK
017880AK 69 00723:36 06/27/198400:03 06/27/1984 SSS- ENEWETAK
017880AK 70 00700:36 06/28/198400:46 06/28/1984 SSS- ENEWETAK
017880AK 84 00700:49 06/29/198401:12 06/29/1984 SSS- ENEWETAK
017880AK 73 00701:46 06/28/198401:54 06/28/1984 SSS- ENEWETAK
017880AK 74 00701:58 06/28/198402:09 06/28/1984 SSS- ENEWETAK
017880AK 7499 00702:18 06/28/198402:28 06/28/1984 SSS- ENEWETAK
017880AK 8499 00703:59 06/29/198404:25 06/29/1984 SSS- ENEWETAK
017880AK 83 00723:06 06/28/198423:27 06/28/1984 SSS- ENEWETAK
017880AK 68 00723:05 06/27/198423:28 06/27/1984 SSS- ENEWETAK
017890AK 85 00801:34 06/29/198401:55 06/29/1984 SSS- ENEWETAK
017890AK 86 00802:05 06/29/198402:28 06/29/1984 SSS- ENEWETAK
017890AK 87 00802:35 06/29/198402:54 06/29/1984 SSS- ENEWETAK
017890AK 91 00821:29 06/29/198421:52 06/29/1984 SSS- ENEWETAK
017890AK 92 00822:11 06/29/198422:37 06/29/1984 SSS- ENEWETAK
017890AK 93 00822:43 06/29/198423:05 06/29/1984 SSS- ENEWETAK
017890AK 94 00823:13 06/29/198423:38 06/29/1984 SSS- ENEWETAK
017900AK 95 RESTART 00900:09 06/30/198400:33 06/30/1984 SSS- ENEWETAK
017900AK 96 00900:46 06/30/198401:10 06/30/1984 SSS- ENEWETAK
017900AK 97 00901:45 06/30/198402:11 06/30/1984 SSS- ENEWETAK
017900AK 95 ABORTED 00923:44 06/29/198423:51 06/29/1984 SSS- ENEWETAK
017910AK 203 01000:35 07/02/198401:41 07/02/1984 SSS- ENEWETAK
017910AK 204 01002:19 07/02/198402:51 07/02/1984 SSS- ENEWETAK
017910AK 204 CONT. 01002:54 07/02/198403:07 07/02/1984 SSS- ENEWETAK
017910AK 205 01003:25 07/02/198404:27 07/02/1984 SSS- ENEWETAK
017910AK 205 01003:25 07/02/198404:27 07/02/1984 SSS- ENEWETAK
017910AK 201 01022:09 07/01/198423:37 07/01/1984 SSS- ENEWETAK
017920AK 206 01121:13 07/02/198401:02 07/03/1984 SSS- ENEWETAK
017920AK 207 01101:36 07/03/198403:57 07/03/1984 SSS- ENEWETAK
01793KOA 208 01204:12 07/03/198405:31 07/03/1984 SSS- ENEWETAK
01793OAK 210 01222:58 07/03/198423:19 07/03/1984 SSS- ENEWETAK
01793OAK 209 01221:20 07/03/198423:47 07/03/1984 SSS- ENEWETAK
01794OAK 212 01323:59 07/03/198400:19 07/04/1984 SSS- ENEWETAK
01794OAK 213 01300:29 07/04/198400:44 07/04/1984 SSS- ENEWETAK
01794OAK 211 01323:30 07/03/198423:44 07/03/1984 SSS- ENEWETAK
01795KOA 701 01401:55 07/01/198402:16 07/01/1984 SSS- ENEWETAK
01796KOA 505(99) 00100:06 06/25/198400:20 06/25/1984 SSS- ENEWETAK
01796KOA 501 00102:31 06/24/198402:47 06/24/1984 SSS- ENEWETAK
01796KOA 502 00102:56 06/24/198403:10 06/24/1984 SSS- ENEWETAK
01796KOA 503 00103:28 06/24/198403:47 06/24/1984 SSS- ENEWETAK
01796KOA 504 00103:52 06/24/198404:04 06/24/1984 SSS- ENEWETAK
01796KOA 505 00120:19 06/24/198420:37 06/24/1984 SSS- ENEWETAK
01796KOA 506 00120:45 06/24/198420:56 06/24/1984 SSS- ENEWETAK
01797KOA 507 00221:02 06/24/198421:16 06/24/1984 SSS- ENEWETAK
01797KOA 508 00221:21 06/24/198421:35 06/24/1984 SSS- ENEWETAK
01797KOA 510 00221:59 06/24/198422:16 06/24/1984 SSS- ENEWETAK
01797KOA 511 00222:25 06/24/198422:39 06/24/1984 SSS- ENEWETAK
01797KOA 512 00222:47 06/24/198422:56 06/24/1984 SSS- ENEWETAK
01797KOA 513 00223:05 06/24/198423:19 06/24/1984 SSS- ENEWETAK
01797KOA 514 ABORTED 00223:24 06/24/198423:33 06/24/1984 SSS- ENEWETAK
01797KOA 515 00223:43 06/24/198423:58 06/24/1984 SSS- ENEWETAK
01798KOA 537 00102:37 07/01/198402:51 07/01/1984 SSS- ENEWETAK
01798KOA 538 00102:55 07/01/198403:08 07/01/1984 SSS- ENEWETAK
01798KOA 539 00103:15 07/01/198403:31 07/01/1984 SSS- ENEWETAK
01798KOA 540 00103:35 07/01/198403:50 07/01/1984 SSS- ENEWETAK
01798KOA 541 00103:55 07/01/198404:09 07/01/1984 SSS- ENEWETAK
01798KOA 542 00104:15 07/01/198404:28 07/01/1984 SSS- ENEWETAK
01798KOA 543 00104:35 07/01/198404:49 07/01/1984 SSS- ENEWETAK
01798KOA 544 00104:55 07/01/198405:08 07/01/1984 SSS- ENEWETAK
OAK 51 ABORTED01:03 06/25/1984: 06/25/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 58 ABORTED00:37 06/27/1984: 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7704:06 06/28/1984: 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 89 ABORTED01:30 06/29/1984: 06/29/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 589900:53 06/28/198400:00 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53523:54 06/30/198400:07 07/01/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 5723:48 06/26/198400:09 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20223:57 07/01/198400:10 07/02/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 21223:59 07/03/198400:19 07/04/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 53613:46 07/01/198400:28 07/02/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 21300:29 07/04/198400:44 07/04/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7101:15 06/28/198401:21 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7201:33 06/28/198401:41 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20300:35 07/02/198401:41 07/02/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 70101:56 07/01/198402:16 07/01/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 5901:52 06/27/198402:17 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 9802:17 06/30/198402:40 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20402:19 07/02/198403:07 07/02/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 9902:47 06/30/198403:11 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 8803:05 06/29/198403:29 06/29/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7503:06 06/28/198403:31 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 10003:24 06/30/198403:40 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 6003:16 06/27/198403:42 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20701:36 07/03/198403:57 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7603:36 06/28/198403:59 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 8903:53 06/29/198404:13 06/29/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 6103:53 06/27/198404:19 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 4104:08 06/23/198404:22 06/23/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20503:25 07/02/198404:27 07/02/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 4204:28 06/23/198404:44 06/23/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 9004:23 06/29/198404:47 06/29/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 6204:29 06/27/198404:52 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7804:38 06/28/198405:01 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 6304:59 06/27/198405:26 06/27/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 20804:15 07/03/198405:31 07/03/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 7905:07 06/28/198405:32 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 8122:04 06/28/198421:28 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 8021:35 06/28/198421:57 06/28/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
KOA 52921:52 06/30/198422:09 06/30/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 769921:48 07/01/198422:12 07/01/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
OAK 20123:10 07/01/198422:27 07/01/1984 SBP- ENEWETAKHUNTEC-DEEP TOW
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