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Walvis Ridge Geophys
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2018
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Roger Revelle
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Project Title: |
Tectonic evolution of the Rio Grande Rise - Walvis Ridge hotspot twins inferred from magnetic anomaly and seismic reflection data |
Project Status: |
Submitted |
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Principal Investigator: |
William W. Sager, UHouston |
Project Institution: |
UHouston |
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Project ID: |
106109 |
Version #: |
2 |
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Date Submitted: |
3/1/2018 11:45:00 AM |
Created By: |
William W. Sager |
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Date Last Modified: |
2/27/2019 4:31:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/MGG - 1832197 - Funded |
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Summary of Field Work: |
Collection of seismic, magnetic, and bathymetry data over Walvis Ridge in the southeast Atlantic. Approximately 17 days of seismic, 24 days of magnetic/bathymetry, and 7 days of transit are planned, assuming port in Cape Town. |
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Summary of Facility Requirements: |
Ocean class or other large vessel
Scripps portable seismic system
deep-water multi-beam echo sounder
magnetometer
gravimeter |
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Summary of other requirements and comments: |
Austral summer is best cruise weather window. Site latitudes range from 20°S to 33°S |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1009890 |
Created By: |
William W. Sager |
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Date Last Modified: |
2/27/2019 4:31:00 PM |
Date Submitted: |
3/1/2018 11:45:00 AM |
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Year: |
2018
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Ship/Facility: |
Roger Revelle
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Optimum Start Date:
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11/1/2018 |
Dates to Avoid: |
Austral winter |
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Earliest Start Date: |
9/1/2018 |
Multi-Ship Op: |
No |
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Latest Start Date: |
1/1/2020 |
Other Ship(s): |
NA |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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41 |
0 |
0 |
7 |
48 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
NA |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
NA |
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Short Description of Op Area
for use in schedules: |
Walvis Ridge |
| Description of Op Area: |
Southeast Atlantic
20°S-33°S
3°W-7°E |
| Op Area Size/Dia.: |
780 |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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Ending
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
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 Important Info on Foreign Research Clearances
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Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
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No |
If yes, have you applied for the necessary permits through your export control office?
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No |
| Questions about ITAR/EAR regulations?
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Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
NA |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Cape Town, South Africa |
None |
Cape Town, South Africa |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Closest major port |
Important Info on Working in Foreign Ports
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Chief Scientist: |
William W. Sager, UHouston |
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# in Science Party |
12 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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1 |
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Explanation of Science Party Requirements and Technician Requirements |
Cruise will collect and process geophysical data. Approximately 12 students and PIs needed for watch standing and data processing.
Seismic technicians required to run seismic system. |
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 Dynamic Positioning | ADCP |  Multibeam | Seismic |
| Dredging/Coring/Large Dia. Trawl Wire | Stern A-frame | Fiber Optic (.681) | 0.680 Coax Wire |
| SCUBA Diving | Radioisotope use - briefly describe | NO Radioisotope use/Natural level work | Other Operator Provided Inst. - Describe |
| 0 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
Deep-water multi beam system required for surveying seafloor tectonic features. EM302 multi-beam (Thompson, Sikuliaq) is inadequate but ship could be used if long range sonar utility assigned (SeaMarc)
Require seismic system capable of penetrating sediments to image igneous basement (Scripps system requested)
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
NA |
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