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HOBITSS
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2015
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Roger Revelle
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Project Title: |
Collaborative Research: Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITSS) |
Project Status: |
Submitted |
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Principal Investigator: |
Laura Wallace, UTIG |
Project Institution: |
UTIG |
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Project ID: |
103759 |
Version #: |
2 |
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Date Submitted: |
1/31/2013 5:34:00 PM |
Created By: |
Laura Wallace |
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Date Last Modified: |
1/20/2014 12:04:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/MGG - 1334654 - Funded |
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Summary of Field Work: |
We will deploy 20 broadband ocean bottom seismometers (with absolute pressure gauges; APG), 4 trawl-resistant bottom pressure recorders (BPRs, with APG), 10 BPRs that are not trawl-resistant, offshore the NE coast of the North Island of New Zealand. The goal of the experiment is to study transient aseismic slow slip events (SSEs) and related seismicity (tremor, microseismicity) along the Hikurangi Margin in the North Island, New Zealand. These shallow SSEs occur at <5-15 km depth approximately every eighteen months just offshore Gisborne,New Zealand. They typically last 1-2 weeks and horizontal displacements of up to 3 cm at onshore cGPS sites. The offshore vertical displacements above the SSE source are expected to be 1-3 cm, considerably larger than for Cascadia SSEs, and identifiable using APG data. |
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Summary of Facility Requirements: |
Global class vessel for OBS deployment and recovery. Must be capable of holding 30 OBS and BPRs and 4 trawl-resistant shielded BPRs. |
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Summary of other requirements and comments: |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1005993 |
Created By: |
Laura Wallace |
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Date Last Modified: |
12/3/2013 12:24:00 PM |
Date Submitted: |
1/31/2013 5:34:00 PM |
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Year: |
2015
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Ship/Facility: |
Roger Revelle
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Optimum Start Date:
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5/1/2015 |
Dates to Avoid: |
This is an OBS recovery cruise so needs to be 12 months after deployment cruise, which is currently scheduled for May 10th 2014, using a New Zealand research vessel. |
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Earliest Start Date: |
4/15/2015 |
Multi-Ship Op: |
No |
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Latest Start Date: |
5/15/2015 |
Other Ship(s): |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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8 |
1 |
2 |
2 |
13 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
This is an OBS recovery cruise so needs to be 12 months after deployment cruise. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
Need ship sufficient to recover 20 OBS, 10 Bottom Pressure Recorders (BPRs), and 4 BPRs with trawl shielding offshore NE coast New Zealand. It is a OBS recovery cruise, so needs to be 12 months after deployment cruise. |
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Short Description of Op Area
for use in schedules: |
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| Description of Op Area: |
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| Op Area Size/Dia.: |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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39° 28.8' S
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176° 55.2' E
map
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Ending
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39° 28.8' S
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176° 55.2' E
map
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Show Degrees Minutes |
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Foreign Clearance Required? |
Yes |
Coastal States:
New Zealand |
 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.) |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Napier, New Zealand |
None |
Napier, New Zealand |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Port chosen due to proximity to deployment site and due to availability of cranes, etc. for loading/unloading equipment. Gisborne NZ also considered as a port, much closer to our deployment area, but the Gisborne port may be too small. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Anne F. Sheehan, Colorado |
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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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2 |
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Explanation of Science Party Requirements and Technician Requirements |
We will need crane operators and deck hands to assist with retrieving OBS and BPRs. |
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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. |
Need sufficient deck space for 20 OBS, 10 BPRs and 5 BPRs with trawl shielding. Need crane for recovery of OBS
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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