RC2607 - Marine Geoscience Data System

Sensor Data

Sort by:

Bathymetry:Singlebeam, Gravity:Field, Magnetic:Field

Device Info

Gravimeter, Magnetometer, Sonar:Multibeam

Robert D. Conrad

Repository

MGDS

Format

MGD77

Detrick, Robert

URI

Bathymetry:Swath

(Swath)

Device Info

Sonar:Multibeam

Robert D. Conrad

Repository

NOAA:NCEI

Repository

MGDS

Format

MBSystem

Detrick, Robert

URI

GMRT,

Navigation:Primary

Device Info

Navigation

Robert D. Conrad

Repository

MGDS

Format

MGDS:Nav, SHP

Detrick, Robert

URI

Seismic Reflection/Refraction

Device Info

Seismic:MCS

Array:Robert D. Conrad

Repository

MGDS

Format

ASCII, ASCII:TSN, SEGY

Detrick, Robert

URI

Mutter, John

LDEO

Related References

Event Logs

Line

Device Info

Related Devices

Detrick, Robert

URI

Seismic Acquisition Parameters

Download As Text

RC2607_ACQ001 (Lines: 506,522,533-587(CDP Lines 01-57))

Source Information

AirGun (BOLT)

Source Number: 4

Volume (cu in): 1864

Pressure (psi): 2000

Depth (m): 3

Shot Interval (sec): 20

Distance to Near Channel (m): 280

Distance to Antenna (m): 48

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Group Spacing (m): 50

Cable Length (m): 2400

Cable Depth (m): 12

Near Channel Number: 48

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS,Transit Satellite

WGS-72

Acquisition System

Digital

Name: DFSIV

Sample Interval (msec): 4

Record Length (sec): 12

Details

RC2607 was a 2-ship cruise with the R/V Thomas Washington.

Three types of data were collected

ACQ001

CDP: Conrad only reflection Lines 506, 522, 533-587 (CDP Lines 01-57)

The CDP and WAP segy files are archived as cdp gathers (25 meter bins). The shot number for each trace is in bytes 9-12 of the SEG-Y trace header

The line numbers assigned at sea were incorrect. Add 4 to the line number

in the cruise report to get the archived line number.

RC2607_ACQ002 (Lines: 507-515,523-532 (WAP 01-13))

Source Information

AirGun (BOLT)

Source Number: 4

Volume (cu in): 1864

Pressure (psi): 2000

Depth (m): 3

Shot Interval (sec): 30

Distance to Near Channel (m): 280

Distance to Antenna (m): 48

Number of Arrays: 1

Receiver Information

Hydrophone:Streamer

Number of Cables: 1

Channels Per Cable: 48

Channels Recorded: 48

Group Spacing (m): 50

Cable Length (m): 2400

Cable Depth (m): 12

Near Channel Number: 48

Used Active Tail Buoy: false

Used Compass Birds: false

Nav System

GPS,Transit Satellite

WGS-72

Acquisition System

Digital

Name: DFSIV

Sample Interval (msec): 4

Record Length (sec): 20

Details

RC2607 was a 2-ship cruise with the R/V Thomas Washington.

Three types of data were collected

ACQ002

WAP: Wide Aperture reflection lines 507-515, 523-532

(WAP Lines 01-13)

Conrad was the lead ship, followed by Washington at about 5200 meters.

The ships alternated shooting and the Conrad recorded all shots

The CDP and WAP segy files are archived as cdp gathers (25 meter bins). The shot number for each trace is in bytes 9-12 of the SEG-Y trace header

The shot nav files for WAP lines include the ship to ship range (antenna to antenna)for that shot and a flag indicating which ship was shooting (1-Conrad or 2-Washington)

The line numbers assigned at sea were incorrect. Add 4 to the line number

in the cruise report to get the archived line number

For RC2607_ACQ002 Conrad was the lead ship, Washington was ~5200 meters behind Conrad. Each ship shot once per min, one ship on the minute, the other on the half minute. Conrad recorded shots from both ships.

RC2607_ACQ003 (Lines: 498-505,516-521,530,531 (ESP 01-16))

Source Information

AirGun (BOLT)

Receiver Information

Hydrophone:Streamer

Near Channel Number: 48

Nav System

Acquisition System

Digital

Name: DFSIV

Details

RC2607 was a 2-ship cruise with the R/V Thomas Washington.

Three types of data were collected

ACQ003 ESP: Expanding Spread Profile Refraction Lines 498-505, 516-521, 530, 531

(ESP Lines 01-16). See cruise report for details

The line numbers assigned at sea were incorrect. Add 4 to the line number

in the cruise report to get the archived line number.

References

Barth and Mutter, 1996 Variability in oceanic crustal thickness and structure: Multichannel seismic reflection results from the northern East Pacific Rise J. Geophys. Res. 101. doi: 10.1029/96JB00814

Barth, 1991 A marine seismic study of the East Pacific Rise, 8°50' North to 13°30' North Ph.D. Dissertation .

Detrick et al., 1987 Multichannel seismic imaging of a crustal magma chamber along the East Pacific Rise Nature 326. doi: 10.1038/326035a0

Harding et al., 1993 A multichannel seismic investigation of upper crustal structure at 9°N on the East Pacific Rise: Implications for crustal accretion J. Geophys. Res. 98. doi: 10.1029/93JB00886

Kent et al., 1993 Distribution of magma beneath the East Pacific Rise between the Clipperton transform and the 9°17'N Deval from forward modeling of Common Depth Point data J. Geophys. Res. 98. doi: 10.1029/93JB00705

Kent et al., 1993 Distribution of magma beneath the East Pacific Rise near the 9°03'N overlapping spreading center from forward modeling of common depth point data J. Geophys. Res. 98. doi: 10.1029/93JB00706

Vera et al., 1990 The structure of 0-0.2-m.y.-old oceanic crust at 9°N on the East Pacific Rise from expanded spread profiles J. Geophys. Res. 95. doi: 10.1029/JB095iB10p15529

Scientific Personnel

Abrams, Lew

Scientist

URI

Adams, Nicolaus

Scientist

LDEO

Barth, Ginger

Scientist

LDEO

Detrick, Robert

Scientist:Chief

URI

Fontana, S.

Scientist

URI

GMRT,

Investigator
(not in field)

LDEO

Lorenzo, Juan

Scientist

LDEO

Madsen, John

Scientist

URI

Mutter, John

Scientist:Co-Chief

LDEO

Vera, Emilio

Scientist

LDEO

Support Personnel

Iltzsche, Martin

Technician:Airgun

LDEO

Lemmond, Peter

Technician:Sonar

LDEO

QaliMaiwiriwiri, Ropate

Technician

LDEO

Smith, James

Technician:Science

LDEO

Stennett, Joseph

Technician:Electronics

LDEO

Instruments

Gravimeter

Device Info

NotProvided

Magnetometer

Device Info

NotProvided

Navigation

Device Info

NotProvided

Sonar:Multibeam

Device Info

Classic

SeaBeam

Seismic:MCS

Device Info

NotProvided

LDEO

Platform Info

Robert D. Conrad

Array