Drift & Noise, your expert of choice for geophysical measurements of sea ice thickness.

Apart from the importance of sea ice thickness for the Arctic climate, sea ice thickness also serves as an important decision making parameter. Drift & Noise's sea ice thickness measurements based on electromagnetic sounding (EM Measurements) can be conducted shipborne.


Application fields

Drift & Noise's shipborne EM measurement are your solution for ...

Ice breaker performance tests (ice trials)
Trafficability assessments

with the following advantages:

Innovative technology
Real time data stream onto the bridge
2 measurements per second
0.1 m accuracy in level ice
Easy to implement




Time tested methodology

The Drift & Noise team is known for its strong expertise and broad experience with EM Measurements. Members of the Drift & Noise team contributed to the following projects:

Ice Ridging Information for decision making in Shipping operations.

Seasonal Ice Zone Observing Network, observing seasonal ice in the context of sweeping environmental, (geo)political and socio-economic change in the North.

Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies.

Studies on interaction between sea ice, the ocean and the atmosphere.

Measurement of sea ice thickness by the AWI science aircraft on a route from Alaska via Canada, Greenland to Spitsbergen.

Thick Ice Feeding Arctic Export campaign, monitoring the thickness of the sea ice leaving the Fram Strait during summer months.

Validation of Cryosat-2 ice thickness by means of EM-Bird measurements.

 


Specifications


Type of Measurement Shipborne Electromagnetic Induction
Installation Boom in front of bow
Thickness accuracy Up to 0.1 meter
Measurement Pattern Along ship track
Data Availability Real time
Sampling Interval 2 measurements per second

Sample Visualization

Below you find a sample of one visualization possibility for airborne sea ice thickness EM measurements along a transect.

Drift & Noise, your expert of choice for geophysical measurements of sea ice thickness.

Apart from the importance of sea ice thickness for the Arctic climate, sea ice thickness also serves as an important decision making parameter. Drift & Noise's sea ice thickness measurements based on electromagnetic sounding (EM Measurements) can be conducted airborne.


Your benefits

With Drift & Noise's airborne EM measurement services portfolio, accurate and large area sea ice thickness information is no longer difficult to obtain. The current drilling based products cannot cover large areas and satellite sea ice thickness products are characterised by a significant uncertainty and a low resolution.

Drift & Noise's airborne EM measurement services are able to offer to you the following advantages:

High accuracy
Near Real Time
Large areal coverage
Free choice of survey area
Dense spatial sampling
Applicable in shallow waters




Time tested methodology

The Drift & Noise team is known for its strong expertise and broad experience with EM Measurements. Members of the Drift & Noise team contributed to the following projects:

Ice Ridging Information for decision making in Shipping operations.

Seasonal Ice Zone Observing Network, observing seasonal ice in the context of sweeping environmental, (geo)political and socio-economic change in the North.

Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies.

Studies on interaction between sea ice, the ocean and the atmosphere.

Measurement of sea ice thickness by the AWI science aircraft on a route from Alaska via Canada, Greenland to Spitsbergen.

Thick Ice Feeding Arctic Export campaign, monitoring the thickness of the sea ice leaving the Fram Strait during summer months.

Validation of Cryosat-2 ice thickness by means of EM-Bird measurements.

 

Applications

Airborne EM measurement services support:

Conceptual studies of marine infrastructure and shipbuilding
Sea ice monitoring at your working location
The search for suitable sites for marine infrastructure
Trafficability studies
Validation of information from satellite and model simulations


Specifications


Type of Measurement Airborne Electromagnetic Induction
Aircraft Any aircraft certified to carry an external load
Coverage Regional (several hundreds kilometers range)
Thickness accuracy Up to 0.1 meter
Measurement Pattern Along transects
Data Availability Within hours after survey
Sampling Interval One measurement every 4 to 5 meters

Sample Visualization

Below you find a sample of one visualization possibility for airborne sea ice thickness EM measurements along a transect.

Drift & Noise, your expert of choice for geophysical measurements of sea ice thickness.

Apart from the importance of sea ice thickness for the Arctic climate, sea ice thickness also serves as an important decision making parameter. Drift & Noise's sea ice thickness measurements based on electromagnetic sounding (EM Measurements) can be conducted on the ground.



Your benefits

Drift & Noise also performs sea ice thickness measurements using on the ground electromagnetic induction sounding.

The ground EM measurement services offer to you the following advantages:

High accuracy (equivalent to drill holes)
Fast
Near Real Time
Less impacted by bad weather
Cost efficient
Very dense spatial sampling
Applicable in shallow waters

 

Time tested methodology

The Drift & Noise team is known for its strong expertise and broad experience with EM Measurements. Members of the Drift & Noise team contributed to the following projects:

Ice Ridging Information for decision making in Shipping operations.

Seasonal Ice Zone Observing Network, observing seasonal ice in the context of sweeping environmental, (geo)political and socio-economic change in the North.

Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies.

Studies on interaction between sea ice, the ocean and the atmosphere.

Measurement of sea ice thickness by the AWI science aircraft on a route from Alaska via Canada, Greenland to Spitsbergen.

Thick Ice Feeding Arctic Export campaign, monitoring the thickness of the sea ice leaving the Fram Strait during summer months.

Validation of Cryosat-2 ice thickness by means of EM-Bird measurements.

 

Applications

Ground EM measurement services support:

Conceptual studies of marine infrastructure and shipbuilding
The monitoring of "roads" on sea ice
Sea ice thickness mapping
Direct work-on-ice safety assessment
Ice camp surveying


Specifications


Type of Measurement Ground Based Electromagnetic Induction
Vehicle Walking
Snowmobile
Range Local (1 - 10 kilometers)
Thickness accuracy Up to 0.1 meter
Measurement Pattern Along transects (1D) or grid lines (2D)
Data Availability Within hours after survey
Sampling Interval One measurement every 0.1 meter

Sample Visualization

Below you find a sample of one visualization possibility for ground sea ice thickness EM measurements: the sea ice thickness map.

Drift & Noise, your expert of choice for geophysical measurements of sea ice ridges.



Ridges and Risk

Between 30 to 80 % of Arctic sea ice is in so called pressure ridges. These features may exert high loads on marine infrastructure. At the same time, it is extremely difficult to survey the complete structure of a sea ice ridge, in particular its thickness and degree of consolidation. Both of these parameters have an impact on the expected load, sea ice ridges exert.

Criteria for design and placement of marine infrastructure depends on the occurrence and type of sea ice ridges. Sound knowledge about sea ice ridges in areas of potentially high shipping traffic or potential sites for marine infrastructure is recommended.

Present calculations of sea ice ridge forces vary significantly. They suffer from a lack of information on thickness of the consolidated layer, the porosity distribution within the keel and furthermore they assume a too simplified geometry of the keel. We believe that multi-geophysical investigation of sea ice ridges allows for a more complex input to pressure-ridge force calculations.


Applications

Sea ice ridge surveys support and provide

input for concept studies on marine infrastructure
input for ice strength and ice load studies
improved model parameterisation of deformed sea ice



Specifications


Parameters Distribution of Voids
Thickness
Porosity
Electrical Resistivity
Duration of Measurements 1 day per ridge
Type of Measurement Ground Based
Principle DC-Geoelectrics
Surface Nuclear Magnetic Resonance
Hot Water Drilling
Measurement Pattern 2D profiles and 3D volumes
Data Availability Days after the survey

Sample Visualization

Below you find a sample of one visualization possibility for sea ice ridge surveys. Smoothed electric resistivity profile over a sea-ice ridge off the coast of Alaska . Blue zones represent sea water, red zones consolidated sea ice.