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  Marine geohazards  -  2021  -  USCGC Healy  
  Project Information  
Project Title: Canadian Arctic marine continental shelf and slope geohazards Project Status: Submitted
Principal Investigator: Alexandre Normandeau, BIO Project Institution: BIO
Project ID: 106870 Version #: 1
Date Submitted: 7/14/2020 7:05:00 PM Created By: Alexandre Normandeau
Date Last Modified: 7/14/2020 7:05:00 PM URI Serial #: None
Funding Agencies: OTHER - NONE - Funded
Summary of Field Work: General objective
A focus on Canadian Arctic marine continental shelf and slope geohazards driven by the Geological Survey of Canada has spawned numerous Canadian and international (e.g., US and Korean) survey and marine data collection expeditions. The focus has been broad but mainly on foundation stability related to sediment mass failures and the recurrence of such events during the past 20,000 years. The 2017 Greenland tsunami serves as a reminder of the risk landslides pose and their dramatic consequences on northern communities. Determining the past record of submarine landslides can help to better estimate earthquake recurrence, sub-seafloor permafrost thawing and even iceberg discharge from glaciers. New data from Baffin Bay shows that icebergs originating primarily from Greenland trigger submarine landslides when they ground in fjords. In the western Arctic, sub-seafloor permafrost is actively thawing, potentially leading to mass failures. Therefore, Arctic regions are active regions of marine geohazards yet the lack of regional seafloor mapping impedes our understanding of the scale of these processes. Recognizing the transit nature of the planned 2021 expedition, we propose acoustic-based surveying in Baffin Bay and the NW Passage. We assume the NW Passage will be traversed in both directions and base suggestions on this. Should interest develop, we are prepared to suggest specific short sediment core sites also offshore Baffin Island and Banks Island.
Specific science activities being proposed
Multibeam and sub-bottom profiler transects across known and lesser known targets. These include: 1. Upper continental slope of Baffin Bay where mass failures mostly originate, at the mouths of cross-shelf troughs (e.g., offshore Home Bay, Clyde River, Scott Inlet), 2. Suspected shallowly buried and possibly degrading sub-sea permafrost recently identified on the inner Yukon shelf (and by extension the Alaskan Shelf), 3. Shelf-break mass failure scarps and run-out deposits at the Yukon/Alaskan border, 4. Suspected seabed-expressed neo-tectonics (outer Banks Island Shelf), and 5. glacial and low-sea level features/terrain whose geometries can be significantly improved by minimal additional transects.
Desired locations for proposed science activities
One focus is the shelf break and upper slope mass failures; the other is inner shelf permafrost in the western Arctic. A route through M’Clure Strait (subject to near ice-free conditions) would offer possibilities to confirm/refute a large late-glacial (surge) moraine genesis. This route would bypass Banks Island Shelf neotectonic faults and shelf-break glacial deposits whose geometry and timing remain unclear. Alternately, an inner-shelf route would address questions on the genesis of a large low-stand terrace. Specific transect route coordinates to intersect these targets can be supplied as mutual interest becomes more concrete.
Summary of Facility Requirements: Key requirements such as core science equipment needed: Multibeam and sub-bottom profiler as well a piston corers if available
Summary of other requirements and comments:  
Ship Request Identification
Type of Request: Collaborative Ship Use Request Status: Submitted
Request ID: 1011146 Created By: Alexandre Normandeau
Date Last Modified: 7/14/2020 7:05:00 PM Date Submitted: 7/14/2020 7:05:00 PM
Requested Ship, Operating Days and Dates
Year: 2021 Ship/Facility: USCGC Healy
Optimum Start Date: 9/14/2021 Dates to Avoid: None
Earliest Start Date: 9/14/2021 Multi-Ship Op: No
Latest Start Date: 10/19/2021 Other Ship(s): none

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
0 0 0 0 0
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:
Work Area for Cruise
Short Description of Op Area
for use in schedules:
Canadian Arctic
Description of Op Area: Baffin Bay and Northwest Passage
Op Area Size/Dia.: 2000
  Lat/Long Marsden Grid Navy Op Area
Foreign Clearance and Permitting Requirements
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.)
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
Nuuk (Godthab), Greenland None Nuuk (Godthab), Greenland
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops
Port where Healy will depart

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Alexandre Normandeau, BIO
# in Science Party 1 # of different science teams 1 # Marine Technicians to be
provided by ship operator:
(include in science party total)
Explanation of Science Party Requirements and Technician Requirements
Instrumentation Requirements That Impact Scheduling Decisions
Unselected Dynamic PositioningUnselected ADCPSelected MultibeamSelected Seismic
Unselected Dredging/Coring/Large Dia. Trawl WireUnselected Stern A-frameUnselected Fiber Optic (.681)Unselected 0.680 Coax Wire
Unselected SCUBA DivingUnselected Radioisotope use - briefly describeUnselected NO Radioisotope use/Natural level workUnselected Other Operator Provided Inst. - Describe
0 PI-Provided Vans - briefly describe Unselected MOCNESS  
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling.

Sub-bottom profiler, multibeam echosounder and coring device (if available)

Major Ancillary Facilities (that require coordination of schedules with ship schedule)
Unselected Helicopter Ops (USCG)Unselected Twin OtterUnselected Unmanned Aerial Systems (UAS) 
Autonomous Underwater Vehicle (AUV)
Unselected Other AUVUnselected Sentry  
Coring Facility
Selected Jumbo Piston CoringSelected Large Gravity Core Unselected MC800 multicorer w/ MISO camera/telemetryUnselected OSU Coring Facility (MARSSAM)
Unselected Other Large Coring FacilityUnselected WHOI Long Core  
Human Occupied Vehicle (HOV)
Unselected AlvinUnselected Clelia (HBOI)Unselected JSL I & II (HBOI)Unselected Other HOV
Other Facility
Unselected MISO Facility - deep-sea imagingUnselected Other FacilityUnselected Potential Fields Pool Equipment 
Remotely Operated Vehicle (ROV)
Unselected JasonUnselected Other ROV  
Seismic Facility
Unselected Ocean Bottom Seismograph Instrument Center (OBSIC)Unselected Ocean Bottom Seismograph Instrument Pool (OBSIP)Unselected Ocean-Bottom Seismometer Program (UTIG)Unselected Other Seismic/OBS Facility
Unselected PASSCALUnselected Portable MCS groupUnselected Portable MCS/SCS groupUnselected U.S. Geological Survey Ocean Bottom Seismometer Facility (USGS at WHOI)
Towed Underwater Vehicle
Unselected ARGO IIUnselected Hawaii MR1 (HMRG)Unselected IMI12 (HMRG)Unselected IMI120 (HMRG - formerly DSL 120A)
Unselected IMI30 (HMRG)Unselected Other Towed Underwater VehicleUnselected Towfish 
UNOLS Van Pool
Unselected AUV Lab Van #1Unselected Clean Lab VanUnselected Cold Lab VanUnselected General Purpose Lab Van
Unselected Radioisotope Lab VanUnselected Wet Lab Van  
UNOLS Winch Pool
Unselected Mooring SpoolerUnselected Portable WinchUnselected Turn Table 
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems.

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