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Calcite Saturometry
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2021
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Endeavor
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Project Title: |
Biogenic Calcium Carbonate Solubilities and Reaction Rates by Lab and Field Saturometry |
Project Status: |
Submitted |
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Principal Investigator: |
Adam Subhas, WHOI |
Project Institution: |
WHOI |
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Project ID: |
106352 |
Version #: |
2 |
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Date Submitted: |
2/11/2019 10:51:00 PM |
Created By: |
Adam Subhas |
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Date Last Modified: |
8/3/2019 10:03:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/CO - 1923998 - Funded |
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Summary of Field Work: |
We will perform in situ ship wire experiments on the solubility and reaction kinetics of inorganic and biogenic calcium carbonates, including foraminifera, pteropods, and coccoliths. The study site is the Wilkinson Basin in the Gulf of Maine.
We will deploy two custom instruments which are battery powered. These instruments will be deployed on a non-conducting hydrowire at 200-250m depth for 10-24 hours at a time. A Seabird CTD will be deployed in between the two instruments. We will also potentially hang customized 1.2 L Niskin bottles above our instruments, which are triggered to close by traditional messengers. We will run at least five of these hydrowire-based experiments for a total cruise duration of 5-7 days.
Hydrocasts using a CTD/Rosette will be conducted before and after each experiment. If possible we would also like to deploy short-duration sediment traps.
We would like to catch the seasonally depressed aragonite saturation states in either the fall or spring of 2020. A regional-class ship should be of sufficient size to perform this work. |
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Summary of Facility Requirements: |
We will need a CTD/Rosette, a non-conducting hydrowire for experiment deployments (250m). Potentially an A-frame for deployment of sediment traps. |
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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: |
1010341 |
Created By: |
Adam Subhas |
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Date Last Modified: |
2/12/2019 4:56:00 PM |
Date Submitted: |
2/11/2019 10:51:00 PM |
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Year: |
2021
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Ship/Facility: |
Endeavor
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Optimum Start Date:
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4/1/2021 |
Dates to Avoid: |
We need to catch the seasonal low in aragonite saturation in the Wilkinson Basin, which happens in the fall and spring. So either season will work, but winter and summer must be avoided. |
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Earliest Start Date: |
10/1/2020 |
Multi-Ship Op: |
No |
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Latest Start Date: |
4/30/2021 |
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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5 |
1 |
1 |
1 |
8 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
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Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
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Short Description of Op Area
for use in schedules: |
Wilkinson Basin |
| Description of Op Area: |
The Wilkinson Basin, in the Gulf of Maine. |
| Op Area Size/Dia.: |
40 |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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42.667° N
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69.667° W
map
42° 40.02' N
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69° 40.02' W
map
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Ending
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42.667° N
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69.667° W
map
42° 40.02' N
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69° 40.02' W
map
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
US EEZ |
 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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Yes |
| 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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Woods Hole, MA, USA |
None, |
Woods Hole, MA, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
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Important Info on Working in Foreign Ports
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Chief Scientist: |
Adam Subhas, WHOI |
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# in Science Party |
5 |
# 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 |
Routine CTD/hydrocast deployments, sediment trap deployments, hydrowire deployments. |
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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. |
Two custom-built, battery-powered instruments which will hang on a hydrowire at 250m depth. They will be about half the size and weight of McLane in situ pumps. Other devices will be custom-modified 1.2L niskin bottles which will hang on the same wire, spaced ~50m apart, to be triggered by traditional messengers.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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