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Geological and Geophysical data of field activity L-9-81-AA in Aleutian Arc, Alaska from 07/19/1981 to 08/13/1981

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Identification_Information:

Citation:
Citation_Information:
Originator:
U.S. Geological Survey (USGS) <http://www.usgs.gov/>, Coastal and Marine Geology Program (CMGP) <http://marine.usgs.gov/>
Publication_Date: 20131101
Title:
Geological and Geophysical data of field activity L-9-81-AA in Aleutian Arc, Alaska from 07/19/1981 to 08/13/1981
Publication_Information:
Publisher:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Publication_Place: Menlo Park, CA
Online_Linkage: <http://walrus.wr.usgs.gov/infobank/gos/l-9-81-aa.fmeta.xml>
Online_Linkage:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.meta.html>

Description:
Abstract:
Chief Scientists: Dave Scholl, Tracy Vallier. Geological and Geophysical data (3dot5khz, 12khz, airgun, airgunmonitor, Burgairgun, 24channel, sonobuoy, gravity, gravitycore, chaindredge, dopplersonar, integratednavigation, RhoRho, transitsatellite) of field activity L-9-81-AA in Aleutian Arc, Alaska from 07/19/1981 to 08/13/1981, <http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.meta.html>.
Purpose:
These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.
Supplemental_Information:

Equipment Used -
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry
airgun single-channel airgun
airgunmonitor single-channel airgun monitor
Burgairgun
24channel 24-channel seismic
sonobuoy
gravity shipboard gravity
gravitycore
chaindredge
dopplersonar
integratednavigation
RhoRho
transitsatellite
Publications -
Childs, Jonathan R., Scholl, David W., and Vallier, Tracy L., 1981, Onshore and offshore studies,
Amlia Island area, Aleutian Ridge, in Albert, N.R., and Hudson, Travis, eds., The United States
Geological Survey in Alaska; accomplishments during 1979: U.S. Geological Survey Circular 0823-B,
p. 134-137.<BR>
<HR>
McCarthy, Jill, Stevenson, Andrew J., Scholl, David W., and Vallier, Tracy L., 1984, Speculations on
the petroleum geology of the accretionary body; an example from the central Aleutians: Marine and
Petroleum Geology, v. 1, no. 2, p. 151-167. <BR>
<HR>
McCarthy, Jill, and Scholl, David W., 1985, Mechanisms of subduction accretion along the
central Aleutian Trench: Geological Society of America Bulletin, v. 96, no. 6, p. 691-701.<BR>
<HR>
Harbert, W.P., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982,
Geologic and tectonic history of Atka Basin, Aleutian Ridge, in American Geophysical Union
1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115.<BR>
<HR>
McCarthy, J., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982,
Mechanisms of accretion along the Aleutian Trench, in American Geophysical Union 1982 fall
meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115.<BR>
<HR>
Harbert, William, Scholl, David W., Vallier, Tracy L., Stevenson, Andrew J., and Mann, D.M., 1986,
Major evolutionary phases of a forearc basin of the Aleutian Terrace; relation to North Pacific
tectonic events and the formation of the Aleutian subduction complex: Boulder, CO, Geology,
v. 14, no. 9, p. 757-761.<BR>
<HR>
McCarthy, Jill, Scholl, David W., and Sleep, Norman H., 1983, Accretionary structures along
the central Aleutian Trench: American Geophysical Union Eos, Transactions, v. 64, no. 45, p. 870.<BR>
<HR>
McCarthy, Jill, 1987, Seismic reflection imaging of plate boundaries; examples from the
central Aleutians, the North Atlantic, and the Basin and Range Province of the Western U.S.:
Stanford, CA, Stanford University Ph. D. Dissertation.<BR>
<HR>
Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1987, Evolution and petroleum
geology of Amlia and Amukta intra-arc summit basins, Aleutian Ridge: Marine and Petroleum
Geology, v. 4, no. 4, p. 334-352.<BR>
<HR>
Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1985, Extensional structures
on the Aleutian Ridge, Alaska: American Geophysical Union Eos, Transactions, v. 66, no. 46,
p. 1072.<BR>
<HR>
Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1988, The origin of summit
basins of the Aleutian Ridge; implications for block rotation of an arc massif: Tectonics,
v. 7, no. 2, p. 327-341.<BR>
<HR>
Scholl, David W., Mann, Dennis M., Vallier, Tracy L., and Sliter, Ray W., 1988, Multichannel
seismic-reflection data collected in 1981 across the Aleutian Arc and Trench, Alaska:
U.S. Geological Survey Open-File Report 88-0592, 4 p. 2 sheets.<BR>

Similar information is available for thousands of other USGS/CMG-related Activities.
If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... <http://walrus.wr.usgs.gov/infobank/>
This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19810719
Ending_Date: 19810813

Currentness_Reference: ground condition

Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 173.58301
East_Bounding_Coordinate: -165.99205
North_Bounding_Coordinate: 54.08144
South_Bounding_Coordinate: 50.11441

Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificinformation
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: EARTH SCIENCE > OCEANS
Theme:
Theme_Keyword_Thesaurus: USGS CMG InfoBank
Theme_Keyword: Marine Geology
Theme_Keyword: Marine Geophysics
Theme_Keyword: Marine Gravity Field
Theme_Keyword: Marine Magnetic Field
Theme_Keyword: Magnetic Anomalies
Theme_Keyword: Bathymetry
Theme_Keyword: Water Depth
Theme_Keyword: Seafloor Topography
Theme_Keyword: Marine Seismic

Place:
Place_Keyword_Thesaurus: USGS CMG InfoBank
Place_Keyword: AK
Place_Keyword: Alaska
Place_Keyword: Aleutian Arc
Place_Keyword: Aleutian Arc, Alaska
Place_Keyword: Aleutians
Place_Keyword: USA


Access_Constraints:
Physical materials are under controlled on-site access.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>


Data_Set_Credit:
Aaron Dunwald (Chief Engineer); Andy Stevenson (Geologist); Bob Rothman (Chief Mate); Dave Scholl (Chief Scientist); Dennis Mann (Geophysicist); Eric Dash (Watchstander); Frank Johnson (Ship Captain); George Asuncion (Electronics Technician); Guy Cochrane (Navigator); Jill McCarthy (Dafe Curator); Joe Edwards (Mechanical Technician); Jon Childs (Geophysicist); Kaye Kinoshita (Navigator); Margaret Keller (Geologist); Meg Kingston (Navigator); Paul Wenberg (Mechanical Technician); Rick Murnane (Geochemist); Rick Murnane (Geologist); Roy Fields (Electronics Technician); Tracy Vallier (Chief Scientist); Wyn Hill (Geologist); Wyn Hill (Geophysicist)
Native_Data_Set_Environment: Digital, ASCII
Cross_Reference:
Citation_Information:
Originator:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Publication_Date: Unknown
Title: USGS/CMG Information Bank <http://walrus.wr.usgs.gov/infobank/>
Publication_Information:
Publisher:
U.S. Geological Survey (USGS) <http://www.usgs.gov> Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Publication_Place: Menlo Park, CA
Online_Linkage: <http://walrus.wr.usgs.gov/infobank/>
Other_Citation_Details:
Childs, Jonathan R., Scholl, David W., and Vallier, Tracy L., 1981, Onshore and offshore studies, Amlia Island area, Aleutian Ridge, in Albert, N.R., and Hudson, Travis, eds., The United States Geological Survey in Alaska; accomplishments during 1979: U.S. Geological Survey Circular 0823-B, p. 134-137. McCarthy, Jill, Stevenson, Andrew J., Scholl, David W., and Vallier, Tracy L., 1984, Speculations on the petroleum geology of the accretionary body; an example from the central Aleutians: Marine and Petroleum Geology, v. 1, no. 2, p. 151-167. McCarthy, Jill, and Scholl, David W., 1985, Mechanisms of subduction accretion along the central Aleutian Trench: Geological Society of America Bulletin, v. 96, no. 6, p. 691-701. Harbert, W.P., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982, Geologic and tectonic history of Atka Basin, Aleutian Ridge, in American Geophysical Union 1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115. McCarthy, J., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982, Mechanisms of accretion along the Aleutian Trench, in American Geophysical Union 1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115. Harbert, William, Scholl, David W., Vallier, Tracy L., Stevenson, Andrew J., and Mann, D.M., 1986, Major evolutionary phases of a forearc basin of the Aleutian Terrace; relation to North Pacific tectonic events and the formation of the Aleutian subduction complex: Boulder, CO, Geology, v. 14, no. 9, p. 757-761. McCarthy, Jill, Scholl, David W., and Sleep, Norman H., 1983, Accretionary structures along the central Aleutian Trench: American Geophysical Union Eos, Transactions, v. 64, no. 45, p. 870. McCarthy, Jill, 1987, Seismic reflection imaging of plate boundaries; examples from the central Aleutians, the North Atlantic, and the Basin and Range Province of the Western U.S.: Stanford, CA, Stanford University Ph. D. Dissertation. Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1987, Evolution and petroleum geology of Amlia and Amukta intra-arc summit basins, Aleutian Ridge: Marine and Petroleum Geology, v. 4, no. 4, p. 334-352. Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1985, Extensional structures on the Aleutian Ridge, Alaska: American Geophysical Union Eos, Transactions, v. 66, no. 46, p. 1072. Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1988, The origin of summit basins of the Aleutian Ridge; implications for block rotation of an arc massif: Tectonics, v. 7, no. 2, p. 327-341. Scholl, David W., Mann, Dennis M., Vallier, Tracy L., and Sliter, Ray W., 1988, Multichannel seismic-reflection data collected in 1981 across the Aleutian Arc and Trench, Alaska: U.S. Geological Survey Open-File Report 88-0592, 4 p. 2 sheets.



Data_Quality_Information:

Attribute_Accuracy:
Attribute_Accuracy_Report: Identified as best available version.

Logical_Consistency_Report: Unspecified

Completeness_Report:
Start and end date/times of data
Navigation Data (l-9-81-aa.070)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198107190212000    198107201108000
198107201117000    198107201649260
198107201654360    198107240505200
198107240533190    198108100623120
198108100629050    198108131805000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Gravity Data (l-9-81-aa.165_070)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198107190226000    198107191506480
198107191515000    198107200834420
198107200844060    198107201713240
198107201721540    198107210201540
198107210207060    198107220431240
198107220437540    198107221335180
198107221437060    198107230816360
198107230822060    198107260508240
198107260515060    198107261854300
198107261904300    198107270358300
198107270405060    198107280617420
198107280623180    198107300818000
198107300823420    198107302338120
198107310226480    198107311039000
198107311044420    198107311846420
198107312049060    198108010036180
198108011032240    198108011810120
198108020548240    198108021051240
198108021100300    198108031253120
198108031259060    198108031357120
198108031428000    198108031855300
198108032204360    198108040707540
198108040714120    198108061331420
198108061337060    198108070714540
198108070720000    198108080919000
198108080925120    198108090505480
198108090511060    198108110414420
198108110420180    198108120846480
198108120943000    198108131742180
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Magnetics Data (l-9-81-aa.220_070)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198107190800000    198107191512070
198107191520030    198107200840000
198107200849080    198107200941560
198107201633160    198107201718360
198107201726520    198107210207000
198107210212080    198107220436560
198107220442520    198107221340320
198107221442060    198107230821560
198107230827040    198107260514000
198107260520040    198107261900000
198107261909320    198107270404000
198107270410040    198107280328100
198107280514400    198107280623000
198107280628160    198107280827240
198107282256360    198107290141400
198107291204400    198107292022040
198107300334400    198107301240080
198107301921440    198107302256160
198107310232160    198107310915240
198107312054050    198108010041040
198108011039070    198108011814510
198108020553270    198108021057070
198108021105310    198108031402400
198108031433030    198108031900320
198108032209360    198108040713000
198108040719120    198108042338400
198108050854400    198108051705160
198108060916400    198108061337000
198108061342040    198108080924200
198108080930140    198108082258280
198108090114200    198108092221440
198108100038240    198108100539160
198108100821280    198108110419560
198108110425160    198108112310080
198108120135090    198108120852280
198108120948000    198108121339000
198108121712230    198108131045000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Bathymetry Data (l-9-81-aa.335_070)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198107190300060    198107190924360
198107190939180    198107191007300
198107191020300    198107201215060
198107201247300    198107201801480
198107201812240    198107220000000
198107220150360    198107280300000
198107280527180    198107280829060
198107282303120    198107290131420
198107290630000    198107301458180
198107301509180    198107301518120
198107301528180    198107301528180
198107301538420    198107310915240
198107311000060    198108010034540
198108011042420    198108011833540
198108020601000    198108042338060
198108050904180    198108051848000
198108060955240    198108061704180
198108061716180    198108070022120
198108070059540    198108070343300
198108070357300    198108070400540
198108070413540    198108071800000
198108071831180    198108080333120
198108080344060    198108081108060
198108081205060    198108082230060
198108082241120    198108112300060
198108112311540    198108121338300
198108121700120    198108131040360
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Seismic Shots Data (l-9-81-aa.421_070)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198107201802220    198107220000060
198107220145060    198107221720110
198107221940110    198107231354470
198107231502070    198107241036120
198107241130120    198107250221110
198107250250310    198107250325520
198107250349520    198107251319520
198107251353120    198107260210140
198107260216540    198107261053340
198107261205140    198107270851500
198107271310100    198107280253350
198108060958150    198108062358190
198108070055190    198108080252180
198108080258580    198108080515390
198108080540390    198108081137190
198108081208190    198108081718160
198108081724560    198108082231350
198108100823460    198108101352280
198108101357390    198108110016060
198108110032270    198108110055080
198108110100310    198108110100310
198108110106460    198108110106460
198108110113250    198108110113250
198108110120020    198108110120020
198108110127340    198108110127340
198108110135550    198108110135550
198108110142460    198108110147400
198108110152500    198108110152500
198108110158320    198108110230210
198108110235310    198108110537260
198108110607470    198108111406020
198108111411390    198108111715540
198108111721220    198108112301430
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Unspecified

Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Unspecified

Lineage:

Process_Step:
Process_Description:
Navigation Data
Converted to time format with year at start.

06/06/86 EDM DUA0:[DATA.LEE81B]L981AA.070;
DUA0:[DATA.LEE81B]FIXLATLON.EXE;
fixed longitude values <-180. degrees

Input was...
06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.070;
DRB0:[DRS.NAV]EOTCSSP.EXE;

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.050;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was l981aa.sinse1._ on TAM295 and on TAM339

Process_Date: 19960122

Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Process_Step:
Process_Description:
Gravity Data
10/31/1998  /tiger/l/l981aa/grav/l-9-81-aa.165_070
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

04/14/86 BECKIE DUA0:[DATA.JON.L981AA]L981AA.165;
DRB0:[DRS.REFMT]REFORMAT.EXE;5
This file was a Multics file named l981aa.red_grv.
Jon Childs believes this file to be superior to
L981AA.161, which has regional value problems.

Input was...
Converted to time format with year at start.

06/06/86 EDM DUA0:[DATA.LEE81B]L981AA.070;
DUA0:[DATA.LEE81B]FIXLATLON.EXE;
fixed longitude values <-180. degrees

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.070;
DRB0:[DRS.NAV]EOTCSSP.EXE;

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.050;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was l981aa.sinse1._ on TAM295 and on TAM339

time, lat, long, time(sec) to nearest nav fix, data values
Process_Date: 19981031

Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Process_Step:
Process_Description:
Magnetics Data
06/20/2012 carolyn l-9-81-aa.220_070

Reprocessed using subroutines from Susan Macmillan's
IGRF SYNTHESIS PROGRAM <http://www.ngdc.noaa.gov/IAGA/vmod/igrf11.f>
with IGRF-11 coeffiecients integrated into the source code.
/infobank/programs/mag/magred11/magred11.for
Using geodetic coordinate system (Earth shape approximated by spheriod)
with altitude 0.0 km (for sea level).

Input was...
10/31/1998  /tiger/l/l981aa/mag/l-9-81-aa.200_070
/bear/programs/edit/automerge/automerge

Converted to time format with year at start.

11/21/85 CAROLYN DRS$DATA:[L981AA.M]L981AA.200;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was L981AA._.MAGSB1       on TAM002
was L981AA220.DAT         on VAM002

Converted to time format with year at start.

06/06/86 EDM DUA0:[DATA.LEE81B]L981AA.070;
DUA0:[DATA.LEE81B]FIXLATLON.EXE;
fixed longitude values <-180. degrees

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.070;
DRB0:[DRS.NAV]EOTCSSP.EXE;

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.050;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was l981aa.sinse1._ on TAM295 and on TAM339

time, lat, long, time(sec) to nearest nav fix, data values
Process_Date: 20120620

Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Process_Step:
Process_Description:
Bathymetry Data
10/31/1998  /tiger/l/l981aa/bath/l-9-81-aa.335_070
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

09/04/85 BECKIE DUA0:[DATA.L981AA.B]L981AA.335;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
This file was hand-digetized in 2-way traveltime(secs).

Input was...
Converted to time format with year at start.

06/06/86 EDM DUA0:[DATA.LEE81B]L981AA.070;
DUA0:[DATA.LEE81B]FIXLATLON.EXE;
fixed longitude values <-180. degrees

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.070;
DRB0:[DRS.NAV]EOTCSSP.EXE;

06/24/85 CAROLYN DRS$DATA:[L981AA.N]L981AA.050;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was l981aa.sinse1._ on TAM295 and on TAM339

time, lat, long, time(sec) to nearest nav fix, data values
Process_Date: 19981031

Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>



Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Aleutian Arc, Alaska
Direct_Spatial_Reference_Method: Point

Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point



Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00001
Longitude_Resolution: 0.00001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Local surface
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values



Entity_and_Attribute_Information:

Overview_Description:
Entity_and_Attribute_Overview:
Bathymetry with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/bath.html>

Overview_Description:
Entity_and_Attribute_Overview:
Gravity with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/grav.html>

Overview_Description:
Entity_and_Attribute_Overview:
Magnetics with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/mag.html>

Overview_Description:
Entity_and_Attribute_Overview:
Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.html>

Overview_Description:
Entity_and_Attribute_Overview:
Seismic Shots with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/seis.html>



Distribution_Information:

Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Resource_Description:
Downloadable Data L-9-81-AA data set <http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.meta.html>

Distribution_Liability:
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
File_Decompression_Technique: No compression applied
Transfer_Size: 1.2

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.nav.html>

Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
File_Decompression_Technique: No compression applied
Transfer_Size: 2.9

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.grav.html>

Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
File_Decompression_Technique: No compression applied
Transfer_Size: 2.5

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.mag.html>

Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
File_Decompression_Technique: No compression applied
Transfer_Size: 0.9

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.bath.html>

Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
File_Decompression_Technique: No compression applied
Transfer_Size: 1.7

Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://walrus.wr.usgs.gov/infobank/l/l981aa/html/l-9-81-aa.seis.html>

Fees: None



Metadata_Reference_Information:

Metadata_Date: 20131101

Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
Contact_Person: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Position:
InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>

Contact_Address:
Address_Type: mailing and physical address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5055
Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address:
infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Metadata_Standard_Name:
FGDC Content Standards for Digital Geospatial Metadata <http://www.fgdc.gov/>

Metadata_Standard_Version: FGDC-STD-001-1998 <http://www.its.nbs.gov/nbs/meta/meta.html>

Metadata_Time_Convention: universal time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none


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