|
|
Seabed Acoustics
-
2017
-
Neil Armstrong
|
|
|
|
Project Title: |
ONR Seabed Characterization Experiment - New England Mud Patch |
Project Status: |
Submitted |
|
Principal Investigator: |
Kyle M. Becker, ONR |
Project Institution: |
ARL:UT |
|
Project ID: |
104782 |
Version #: |
2 |
|
Date Submitted: |
2/19/2015 3:58:00 PM |
Created By: |
Kyle M. Becker |
|
Date Last Modified: |
3/25/2016 1:15:00 PM |
URI Serial #: |
None |
|
Funding Agencies: |
NAVY/ONR - NONE - Funded |
|
Summary of Field Work: |
Multi-investigator, multi-national seabed characterization experiment.
This work will support objectives of the ONR ocean acoustics program relating to the acoustics of shallow waters overlying soft sediment. There are three general themes including: understanding the physical mechanisms controlling propagation; estimating properties of the sediment and quantifying uncertainty; and assessing the performance of inversion methods and geoacoustic models. A multidisciplinary team with expertise in acoustics, oceanography, signal processing, and sediment processes have been invited to participate in an experiment to address these themes. The location will be the New England mud patch, south of Nantucket, MA extending approximately 30 km east and 11 km north of 40º 25.5’ N, 70º 46.5’ W. Acoustic propgation and scattering experiments will be conducted with a variety of different source and receiver configurations designed to meet scientific objectives. Several moored vertical and horizontal receiver arrays, drifting arrays, and at least one towed array have been proposed. Oceanographic moorings and other instruments in numbers and configurations required to support the acoustics will also be deployed. The use of gliders and AUVs has also been proposed. As the objectives are focused on seabed acoustics, we propose to carry out the experiment in late March - early May 2016 when the water colum should be well mixed. |
|
Summary of Facility Requirements: |
Deck space and lab space to support deployment of multiple vertical and vertical arrays for acoustics and oceanographic measurements. Ability to tow acoustic sources such as the J-15-3. Ability to tow an array such as the FORA. Detailed deck space, laboratory, and berthing requirements are being gathered at this time and will be provided in the near future. It is anticipated that a minimum of 30 days at sea will be required to meet scientific objectives and so 45 days will be requested to include contingencies for bad weather. |
|
Summary of other requirements and comments: |
|
|
|
Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
|
Request ID: |
1007651 |
Created By: |
Kyle M. Becker |
|
Date Last Modified: |
9/4/2015 1:41:00 PM |
Date Submitted: |
2/19/2015 3:58:00 PM |
|
|
Year: |
2017
|
Ship/Facility: |
Neil Armstrong
|
|
Optimum Start Date:
|
4/1/2017 |
Dates to Avoid: |
1 Jan - 14 March 2016 - weather
1 July - 30 Sept 2016 - summer stratified conditions |
|
|
|
|
|
|
Earliest Start Date: |
3/15/2016 |
Multi-Ship Op: |
Yes |
|
Latest Start Date: |
5/1/2016 |
Other Ship(s): |
R/V Endeavor
R/V Hugh Sharp
Anticipating need for at least two other ships for towed source and receiver operations. |
|
|
Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
|
45 |
3 |
2 |
2 |
52 |
Repeating Cruise?
(within same year) |
No |
Interval: |
|
# of Cruises: |
|
|
|
Description of Repeating cruise requirements: |
N/A |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
Large field experiment with many performers and assets. Dates chosen to minimize effect of water column stratification and internal waves on measurements. |
|
Short Description of Op Area
for use in schedules: |
NE Mud Patch |
| Description of Op Area: |
New England Mud Patch south of Nantucket, MA. |
| Op Area Size/Dia.: |
30 km x 11 km |
|
|
| |
Lat/Long |
Marsden Grid |
Navy Op Area |
|
Beginning
|
40° 30' N
/
70° 30' W
map
|
|
|
|
Ending
|
40° 30' N
/
70° 30' W
map
|
|
|
| |
Show Degrees Minutes |
|
|
|
|
|
Foreign Clearance Required? |
No |
Coastal States:
|
 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.) |
N/A |
|
|
Requested Start Port |
Intermediate Port(s) |
Requested End Port |
|
Woods Hole, MA, USA |
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 |
Closest Port to Operation Area. |
Important Info on Working in Foreign Ports
|
|
|
|
Chief Scientist: |
David P. Knobles, ARL:UT |
|
# in Science Party |
40 |
# of different science teams |
15 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
|
12 |
|
Explanation of Science Party Requirements and Technician Requirements |
This is an estimate based on plans submitted. More detailed information will be forthcoming in the near future. |
|
 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 |
| 3 PI-Provided Vans - briefly describe | MOCNESS | | |
|
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
N/A
|
|
|
|
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
N/A |
|
