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Case Studies

IceMap in Iceland

GPR & Arctic Oil Exploration

Arctic oil exploration requires safe transportion of heavy equipment over ice-covered areas. Use of seismic vibrator sources demand that safe ice thickness  be assured and quality of data can depend on finding grounded ice. This case study follows the evolution of the IceMap system now widely used for ice thickness mapping.

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IceMap™

Overview

Winter ice roads and bridges are a common transportation link in the northern regions of Canada, Alaska, Europe and Russia.

Real time ice thickness measurements

ice_mapxThe IceMap real-time display shows the automatically detected bottom of the ice (blue line) in real time. Users can set a minimum thickness warning threshold (gold line).

The IceMap real-time display shows the automatically detected bottom of the ice (blue line) in real time. Users can set a minimum thickness warning threshold (gold line).

Winter ice roads and bridges are a common transportation link in the northern regions of Canada, Alaska, Europe and Russia. The Sensors & Software IceMap system is designed to measure the ice thickness on these temporary, yet vital, links and ensure the safety of all travelers.

The GPR sensor is towed across the ice surface behind a truck or snowmobile and the ice thickness data, displayed in real-time as a cross-sectional image, are sent wirelessly to the operator’s computer.

The minimum, maximum and current ice thickness are displayed numerically and graphically. A user-defined minimum ice thickness threshold sounds an alarm when the ice thickness drops below that value.

Rapid data acquisition enables the unit to be towed at speeds up to 80 km per hour. Low power requirements make it possible for a 12V battery to power the system.

IceMap Data Collection Software

IceMap data collection software simplifies field operation for ice thickness mapping. The user simply sets the desired vehicle speed, scan depth and step size. All other parameters are automatically optimized for best quality data.IceMap-data-collection

Editing and Reporting

Editing
  • Toolbar options enable simple editing in the field
  • User defines the area to edit by dragging the box edges on the touchscreen
  • Playback bar plots the areas where picks have been made as well as the areas of the ice thinner than the threshold value (orange line)

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Reporting
  • Users can define the survey name, start and end location, and any additional comments
  • Ice Calibration summary lists the IceCals performed; their location and the measured thickness of ice
  • A table of the thinnest ice sections including the total length and the longest continuous section of thin ice
  • An Exceptions table plots the areas where picks were manually removed; these areas might indicate grounded ice
  • Reports can be printed or exported to PDF

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Access “Best Practices for Measuring Winter Road Ice Thickness Using GPR”.

 
 
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