|
|
Pisagua eq imaging
-
2016
-
Marcus Langseth
|
|
|
|
Project Title: |
A high-resolution controlled-source seismic experiment to elucidate geologic controls on megathrust slip: the 2014 Pisagua, Chile earthquake sequence as a natural laboratory |
Project Status: |
Submitted |
|
Principal Investigator: |
Anne M. Trehu, OSU_COAS |
Project Institution: |
OSU_COAS |
|
Project ID: |
104549 |
Version #: |
2 |
|
Date Submitted: |
8/13/2014 10:25:00 AM |
Created By: |
Anne M. Trehu |
|
Date Last Modified: |
2/4/2016 1:46:00 PM |
URI Serial #: |
None |
|
Funding Agencies: |
NSF/OCE/MGG - 1459368 - Funded |
|
Summary of Field Work: |
Deploy and recover ocean bottom seismometers.
Acquire 2D deep crustal multichannel seismic reflection data along 2 250-km-long profiles and in a 150x250 km grid.
Shots will also be recorded by OBSs to generate a 3D tomographic model.
Additional OBSs will be deployed by the R/V Sonne (Germany) so coordination of ship schedules will be needed if both ships are funded. However there are back-up scenarios in which the R/V Marcus Langseth schedule does not need to be coordinated with another ship. |
|
Summary of Facility Requirements: |
Project requires maximum volume tuned airgun array and 8-km-long hydrophone streamer. We will also want to acquire XBTs, swath bathymetry, gravity and magnetics. |
|
Summary of other requirements and comments: |
|
|
|
Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
|
Request ID: |
1007286 |
Created By: |
Anne M. Trehu |
|
Date Last Modified: |
2/4/2016 1:46:00 PM |
Date Submitted: |
8/13/2014 10:25:00 AM |
|
|
Year: |
2016
|
Ship/Facility: |
Marcus Langseth
|
|
Optimum Start Date:
|
1/15/2016 |
Dates to Avoid: |
There are no severe weather restrictions for this region. |
|
|
|
|
|
|
Earliest Start Date: |
11/1/2016 |
Multi-Ship Op: |
Yes |
|
Latest Start Date: |
6/30/2018 |
Other Ship(s): |
The optimum scenario proposed involved two ships, with a second ship to deploy OBSs provided by GEOMAR. However, there are alternative scenarios in case both ships cannot be scheduled at the same time. One possible scenario has the R/V Marcus Langseth operating alone. We are also exploring the possible use of a new Chilean research vessel to deploy OBSs. |
|
|
Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
|
43 |
5 |
3 |
2 |
53 |
Repeating Cruise?
(within same year) |
No |
Interval: |
|
# of Cruises: |
|
|
|
Description of Repeating cruise requirements: |
. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
. |
|
Short Description of Op Area
for use in schedules: |
northern Chile |
| Description of Op Area: |
Northern Chile continental margin, extending up to 250 km offshore. |
| Op Area Size/Dia.: |
10935 |
|
|
| |
Lat/Long |
Marsden Grid |
Navy Op Area |
|
Beginning
|
18° 30' S
/
70° 30' W
map
|
|
|
|
Ending
|
|
|
|
| |
Show Degrees Minutes |
|
|
|
|
|
Foreign Clearance Required? |
Yes |
Coastal States:
Chile |
 Important Info on Foreign Research Clearances
|
|
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)?
|
No |
If yes, have you applied for the necessary permits through your export control office?
|
No |
| Questions about ITAR/EAR regulations?
|
Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
. |
|
|
Requested Start Port |
Intermediate Port(s) |
Requested End Port |
|
Iquique, Chile |
None, , None, |
Iquique, Chile |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
. |
Important Info on Working in Foreign Ports
|
|
|
|
Chief Scientist: |
Anne M. Trehu, OSU_COAS |
|
# in Science Party |
35 |
# of different science teams |
3 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
|
5 |
|
Explanation of Science Party Requirements and Technician Requirements |
LDEO technicians are needed to operate the airgun array and MCS and other data acquisition systems.
OBSIP technicians will be needed to operate the OBSs.
The balance of the science party will be faculty and students from Oregon State, GEOMAR, Universidad de Chile (the primary partners in this proposal) and from other universities as space allows. |
|
 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 | | |
|
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
The seismic capabilities are the R/V Marcus Langseth are essential for this project.
|
|
|
|
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
. |
|
