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Lamon Bay
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2012
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Roger Revelle
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Project Title: |
Continental shelf embayments of the eastern margin of the Philippines: Lamon Bay stratification & circulation |
Project Status: |
Submitted |
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Principal Investigator: |
Arnold L. Gordon, LDEO |
Project Institution: |
LDEO |
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Project ID: |
102889 |
Version #: |
1 |
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Date Submitted: |
2/16/2011 12:07:00 PM |
Created By: |
Arnold L. Gordon |
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Date Last Modified: |
2/16/2011 12:07:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NAVY/ONR - N00014-10-1-0426 - Funded |
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Summary of Field Work: |
The 2012 Lamon Bay research cruise is related to the R/V Revelle Lamon Bay cruise of 15 May to 3 June 2011. The 2012 cruise will recover the moorings set out in the 2011 cruise, as well as repeat the CTD coverage of 2011. The Lamon Bay research objective is to quantity the spatial and temporal ocean processes governing the stratification & circulation Lamon Bay, along the eastern coast of Luzon, the Philippines. The observational program consists of integrated physical and biological oceanography measurements, from ship based underway oceanographic and meteorological sensors data and by water column data collection at oceanographic stations. Sea floor configuration is measured enroute by the ship based multibeam system. The working area extends from the Catanduanes Island westward to the Polillo Island region, and northward, to about 17°N where the shelf narrows substantially. The research cruise objectives are: 1. Characterize interaction between the Bicol Shelf and western boundary current system in the east of Luzon; 2. Determine role or response of the shelf interaction to western boundary current variability; 3. Understand role of the shelf-ocean interaction to productivity of both shelf and offshelf waters. The ship-based research survey plan provides 3 snap shot views of Lamon Bay oceanographic conditions. These are tied together by time series observations at 5 moorings straddling the shelf/slope break. The Lamon Bay Survey extends from the inner shelf to the deep ocean, so as to be able to relate the Lamon Bay continental margin conditions within the western boundary regime. Underway temperature, salinity, ocean color, and meteorological data (air temperature, humidity, wind speed and direction) will be obtained along the entire ship track. CTD stations to the sea floor, with water sampling for chemical and biological research will be obtained at approximately 20 nm spacing. A high resolution survey will be carried out within the Polillo Island region, designed to investigate the biological productivity associated with complex ocean color patterns of this area. CTD stations with water sampling for chemical and biological research will be obtained at approximately 10 nm spacing.
During the 2011 cruise 7 moorings will be deployed to be recovered in the 2012 cruise, requested here.
The 7 moorings, with approximate positions:
1. The objective is to resolve the circulation at select sites on the shelf and upper slope, and the exchange between the two regimes:
• Western Lamon Bay margin:
#1 Outer shelf: location: 15°50'N; 121°45'E; water depth ~ 50 m. Sea-Bird Electronics SBE37 temperature-salinity recorder; ORE CART acoustic release; anchor, glass-ball flotation.
#2 Upper Slope: location: 15°45'N; 121°50'E; water depth ~ 250 m. Nortek Continental acoustic Doppler current profiler; Sea-Bird Electronics SBE37 temperature-salinity recorder; ORE acoustic release (type yet to be determined), all installed in a Flotation Technologies trawl-resistant bottom mount
• Polillo Island area: equipment: 300 kHz RDI; two microcats; two Benthos releases; Benthos glass balls
#3 location: 15°00'N; 121°40'E, depth ~50 m, the flow between Polillo Island and Luzon
#4 location: 15°15'N; 121°45'E, depth ~250 m, the flow north of Polillo Island, southern limb of the Lamon cyclonic deep water gyre.
#5 location: 14°40'N; 122°40'E, depth ~ 50 m, the flow between Polillo Island and Tinaga Island
• Catanduanes Islands area: 300 kHz RDI; two microcats; two Benthos releases; Benthos glass balls
#6 location: 14°15'N; 124°00'E, depth ~65 m
#7 location: 14°25'E; 124°10'E, depth ~300 m. |
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Summary of Facility Requirements: |
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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: |
1004471 |
Created By: |
Arnold L. Gordon |
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Date Last Modified: |
2/16/2011 12:07:00 PM |
Date Submitted: |
2/16/2011 12:07:00 PM |
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Year: |
2012
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Ship/Facility: |
Roger Revelle
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Optimum Start Date:
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5/15/2012 |
Dates to Avoid: |
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Earliest Start Date: |
4/1/2011 |
Multi-Ship Op: |
No |
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Latest Start Date: |
6/30/2011 |
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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18 |
1 |
1 |
3 |
23 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
The initial cruise in Lamon Bay is presently scheduled for 15 May to 3 June 2011, from the Revelle. The moorings deployed during that cruise will be recovered in the 2012 cruise, and the CTD grid repeated |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
May/June 2012 mooring recover will provide a full year time series, covering the monsoon [Typhoon] cycle.
May/June 2012 would allow us to measure the net result of 2011/12
the winter monsoon effect on Lamon Bay, to compare to the May/June 2011 conditions observed by the 15 May - 3 June 2011 Revelle cruise.
May/June is a period will be minimum Typhoon activity. |
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Short Description of Op Area
for use in schedules: |
Lamon Bay |
| Description of Op Area: |
shelf and slope region of Lamon Bay, along east coast of Luzon, the Philippines |
| Op Area Size/Dia.: |
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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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Foreign Clearance Required? |
Yes |
Coastal States:
Philippines |
 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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Kao-hsiung, Taiwan |
None |
Kao-hsiung, Taiwan |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
The 2011 plan can be followed in 2012: R/V Roger Revelle depart from Kao-hsiung, Taiwan and to return to Kao-hsiung, Taiwan. The Philippine researchers will be embark and disembark the R/V Revelle during a brief (4 hour, 'touch and go' via water taxi) personnel exchange stop in Tabaco City, after the transect from Kao-hsiung, and then towards the cruise end, before the return transect to Kao-hsiung. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Arnold L. Gordon, LDEO |
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# in Science Party |
24 |
# of different science teams |
3 |
# 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 |
There will be ~ 17 from the Philippines, 3 from
Columbia University [Lamont-Doherty] including the chief scientist, and four
from the U of Hawaii, including Pierre Flament. |
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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. |
CTD, mooring recovery
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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