Iceberg Detection Service Supports safe shipping and other offshore operations structures by...
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![Page 1: Iceberg Detection Service Supports safe shipping and other offshore operations structures by providing near real- time (NRT) detection of icebergs based.](https://reader035.fdocuments.in/reader035/viewer/2022062802/56649eb25503460f94bb95e8/html5/thumbnails/1.jpg)
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Iceberg Detection Service
•Supports safe shipping and other offshore operations structures by providing near real-time (NRT) detection of icebergs based on satellite SAR imagery.
•End-users: International Ice Patrol and Canada-Newfoundland Offshore Petroleum Board
•Policy Sector: Transportation and offshore operations safety Environment
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Summary
•Canada-Newfoundland Offshore Petroleum Board
•International Ice Patrol
•Iceberg Detection Service
•End-User Feedback
•Iceberg Detection Process Chain
•Future
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CNOPB
• Derives its authority from the Atlantic Accord Implementation Acts
• Other relevant policies: Canada's Oceans Act, Canadian Environment Protection Act (CEPA 1988)
• Manages the petroleum resources in the Newfoundland offshore area
• Responsible for approval of operations plans
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CNOPB
•Presently depend on the offshore operators to provide information
•Archived satellite imagery combined with other sources of data could provide iceberg frequency statistics for a particular area of interest
•NRT satellite imagery provides contaminant discharge monitoring
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Threat Analysis
Control ZoneLow to Moderate Risk
Alert ZoneModerate To High Risk
Exclusion ZoneHigh Risk
Production Platform
Outside Control ZoneNo Risk
< 1 NM
1 – 6 NM
6 – 12 NM
FPSO Iceberg Response Control Zone Alert Zone Exclusion Zone
Action Tow iceberg if approaching FPSO
Tow iceberg Prepare FPSO for disconnect
Disconnect and move FPSO
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International Ice Patrol (IIP)
• Operates under authority of International Maritime Organization, International Convention for the Safety of Life at Sea (SOLAS 1974);
• Funded by 17 countries
• Promote safe navigation of the Northwest Atlantic Ocean when the danger of iceberg collision exists
• Monitor iceberg danger near the Grand Banks of Newfoundland and provide the limits of all known ice to the maritime community
• Information is collected primarily from air surveillance flights and ships operating in or passing through the ice area.
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IIP
• Iceberg data, along with ocean current and wind data are fed into a computer model at IIP to predict iceberg drift
• The predicted iceberg locations are used to estimate the limit of all known ice
• This information is available to the U.S., Canada, Europe for the benefit of all vessels transiting North Atlantic.
• NRT satellite imagery will increase the confidence and frequency of iceberg data available
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Iceberg Detection Service for IIP
•Service duration: May 1 – July 11
•RADARSAT SAR and ENVISAT ASAR
•Weekly contact with IIP confirming Area of Interest
•Iceberg Detection Reports delivered for each image
•Several teleconferences to discuss progress and receive feedback
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IIP Service Area
Platforms
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IIP Image Frequency
Month Number of RADARSAT scenes
acquired
Number of ENVISAT scenes planned
May 17 11
June 24 40
July 0 9
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Service Process Flow
Acquisition Planning
C-CORE Iceberg Detection Service
Image Acquired
Direct Downlink to CDPF
FTP Image IDS
Quality Control
Incorporate MANICE file into IIP operations center
Client
Action
Start
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Image Acquisition Planning
•Initial Contact to establish Acquisition plan over a 24-day cycle – frequency, AOI
•24-day cycle repeated until completion of ice season
•Images ordered 2-3 weeks in advance to ensure priority and allow time for conflict resolution
•Images ordered on a weekly basis to allow changes in AOI based on iceberg forecasts
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Image Downlink and FTP
•Data captured by satellite and downlinked to the CDPF (Gatineau station )
•Data processed into image format
•NRT delivery of images (downlink to ftp start time) ~ 3-4 hours
•FTP transfer of images to C-CORE ~ 30 minutes
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Iceberg Detection Algorithm
• Algorithm proceeds in two stages: target detection and target discrimination
• Target detection: modelling of ocean clutter distribution and calculation of threshold based on statistics yields targets (ships and icebergs)
• Target discrimination: exploitation of different spectral response and shape characteristics to classify ships and icebergs
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Quality Control
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IIP Operations
•MANICE file is integrated with into the IIP operations system
•Data used to plan future air reconnaissance flights
•Data compared with other iceberg data entered into the system – analysis not complete
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IDS Output Product
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IIP Feedback
•Text file format converted to MANICE format for easier ingestion to the IIP Ice Management System
•Iceberg information received from C-CORE ~4-5 hours after image acquisition – within accepted time delay of information
•Analysis of data to be completed at the end of the ice season
•Very enthusiastic about Phase I and hope to continue to Phase II
• “It seems satellites are our future”