Demonstration ofDemonstration ofNear-real Time Analysis of Near-real Time Analysis of Sea Ice Motion at 400m Sea Ice Motion at 400m

ResolutionResolution

Cathleen GeigerResearch Associate Professor

University of Delaware

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OutlineOutline

Background & MotivationBackground & Motivation Recent Field ProjectRecent Field Project SummarySummary Request to IICWGRequest to IICWG

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Background & MotivationBackground & Motivation Sea ice motion tracking developed 15+ years ago Sea ice motion tracking developed 15+ years ago

as a state-of-the art computer science research as a state-of-the art computer science research topictopic

Within sea ice, motion-tracking development has Within sea ice, motion-tracking development has made little progress mainly due to lack of funding.made little progress mainly due to lack of funding.

There is an increase inThere is an increase in navigational traffic in the Arctic navigational traffic in the Arctic more integrated science projectsmore integrated science projects

There is a need to increase development of ice There is a need to increase development of ice motion tracking within the sea ice community in an motion tracking within the sea ice community in an accessible form so the knowledge base can accessible form so the knowledge base can increase.increase.

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IPY Project: IPY Project: Sea-ice Experiment – Dynamic Sea-ice Experiment – Dynamic Nature of the Arctic (SEDNA)Nature of the Arctic (SEDNA)

Thank You NSF From University of Alaska Fairbanks (ARC-0612527)

ERDC/CRREL (ARC-0611991)University of Delaware (ARC-0612105)

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ICE

Satmulti-year icefirst-year ice

Prudhoe B

ay

Field Program 5

Map of Moving Topography Map of Moving Topography (MMT)(MMT)

Mani Thomas Mani Thomas Cathleen GeigerCathleen Geiger

Chandra Kambhamettu Chandra Kambhamettu

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Our Processing SystemOur Processing System

VIMS 12 VIMS 11

National Ice Center

GPS Buoys

Field Scientists

Analysis @ UD vims.cis.udel.edu

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©CSA1998

Alaska SAR Facility

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Parse Email

Read Image Data

Job Scheduler<<process>>

Mail Server<<utility>>

Extract Buoy Data

Project Buoy Data

Transmit Buoy Data

HTTP Server<<utility>>

Project Image

FTP Server<<utility>>

Extract Camp Location

Analyze Images

Transmit Motion Product

Visualize Motion Product

Generate Lat/Long grid

UD PROCESSING SYSTEM 8

Window size = ωBlock size = ω/2

Window size = ωBlock size = ω/4

Window size = ωBlock size = ω/2K

Window size = ωBlock size = ω/2K-1

level = 1Image Resolution = W X H

level = 2Image Resolution = W/2 X H/2

level = K - 1Image Resolution = W/2K-2 X H/2K-2

level = KImage Resolution = W/2K-1 X H/2K-1

Isotropic median filter of motion fieldN = 5x5

Processing TechniqueWe focus on the phase component of the image intensity through cascading scales.

Low Correlation Low Correlation DiscontinuityDiscontinuity

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Data Layering SchemeData Layering Scheme10

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Toggle

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Data Layering SchemeData Layering Scheme14

Overview of Program Overview of Program SuccessesSuccesses

144 images provided through ASF<-> NIC 144 images provided through ASF<-> NIC <-> UD interface<-> UD interface

~100 image pairs analyzed at UD~100 image pairs analyzed at UD Turn around time from downlink at ASF to Turn around time from downlink at ASF to

completed product at UD < 2 hourscompleted product at UD < 2 hours Biggest impediment was ice camp deliveryBiggest impediment was ice camp delivery

Iridium satellite phones still too slowIridium satellite phones still too slow Daily “Gold Streak” courier service of DVD with Daily “Gold Streak” courier service of DVD with

all camp needs ($30 per delivery)all camp needs ($30 per delivery) Anticipate greater potential to shorten delivery Anticipate greater potential to shorten delivery

time to a ship with greater bandwidth time to a ship with greater bandwidth transmission.transmission.

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The Next StepThe Next Step Submitting a proposal to NSF logistics to turn Submitting a proposal to NSF logistics to turn

this into a near-commercial product (5 year)this into a near-commercial product (5 year)

Wish to develop this into a product using Wish to develop this into a product using GRASS as a GIS display toolGRASS as a GIS display tool

UD research team is willing to serve as the UD research team is willing to serve as the initial hub to set up infrastructure to initial hub to set up infrastructure to disseminate and maintain development disseminate and maintain development updates, user’s manual feedback, product updates, user’s manual feedback, product developer interface system, etc.developer interface system, etc.

Proposal overview sheet provided through Proposal overview sheet provided through PabloPablo

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SummarySummary Successful coordination of SAR Successful coordination of SAR

motion analysis from satellite to motion analysis from satellite to pickup site in less than 2 hourspickup site in less than 2 hours

Seeking funding (Nov 10) to Seeking funding (Nov 10) to develop near-commercial version develop near-commercial version with free distribution for non-with free distribution for non-commercial applications commercial applications (education, research, logistics, (education, research, logistics, government agencies)government agencies)

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REQUESTREQUEST

A letter of support from IICWG.A letter of support from IICWG. Potential as a resource in support of Potential as a resource in support of

navigation and safety in ice-covered navigation and safety in ice-covered waterswaters

Statement saying that you would work Statement saying that you would work with this research team to disseminate with this research team to disseminate this product to the international this product to the international navigational community for non-navigational community for non-commercial applicationscommercial applications

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