News from Time Domain Electromagnetic and SkyTEM North America

Combined SkyTEM and AIRGrav Survey in Hope Bay, Nunavut

SkyTEM Nunavut

SkyTEM Canada Inc is pleased to report that data acquisition on TMAC Resources’ Hope Bay and Elu gold mining projects in Nunavut has begun. SkyTEM and Sander Geophysics have teamed to acquire over 15,000 line kilometres of combined electromagnetic, magnetic and gravity data over TMAC’s properties. The airborne data will be used to supplement previous exploration carried out on the Greenstone belt, helping TMAC create Canada’s next major gold mining camp.

The Hope Bay airborne exploration program includes:

  • A SkyTEM516 electromagnetic and magnetic survey over the Hope Bay and Elu properties. SkyTEM516, a dual moment system, is capable of delivering a dipole moment of more than 1,000,000 NIA. A uniquely engineered receiver design reduces the noise level by a factor of 20 for the collection of accurate high resolution data from the near surface to depths of several hundred metres. In early 2015 SkyTEM516 demonstrated its depth and resolution capabilities by mapping the deep and weakly contrasting Caber Deposit in Québec, Canada. Caber results can be seen here.
  • A Sander AIRGrav purpose built airborne gravimeter to acquire high resolution helicopter gravity data over the Elu North and South survey blocks. This unique gravimeter is mounted on a three-axis inertially stabilized platform, combined with extremely accurate Differential GPS (DGPS) to correct for aircraft movement and vibrations. AIRGrav offers a number of advantages over competing systems, including: 1) significantly better resolution and accuracy; 2) ability to operate under turbulent flying conditions; 3) ability to provide high quality gravity data while flying in drape mode; 4) significant operational efficiencies; and 5) shorter time required for data acquisition and processing.
  • 24/7 data acquisition. SkyTEM is managing the surveys and, together with Sander Geophysics and field crew from Devbrio Géophysique Inc, has mobilized a team of 7 professionals, including helicopter pilots, to Hope Bay to take advantage of available daylight hours in Nunavut and maximize daily data acquisition. TMAC’s infrastructure contributes to survey efficiency with the availability of three camps, air strips, roads, fuel storage, a port and power plants. Preliminary data and 1D EM inversions are being delivered every 48 hours throughout the project.

Along with Gravity/Mag/EM data, post processing of Airborne IP signatures will also be completed. If unique geophysical indicators can be defined for the various styles of mineralization at Hope Bay it will significantly improve future exploration targeting and reduce future exploration expenditures and timelines to success. SkyTEM and Sander are both proud to play a part in this important Canadian gold mining project.

SkyTEM data accuracy maps depth to and thickness of Nebraska aquifers

SkyTEM EM survey

In 2013 SkyTEM304 collected data over 99-square miles of Eastern Nebraska to provide critical information on the condition of aquifers in areas suffering from declining water levels.  According to management of the Lower Platte South Natural Resources District (LPS NRD) SkyTEM’s accurate high resolution results provide extensive information about the area’s geology, aquifer characteristics and water in storage.  The NRD’s use of the data is on-going.  The data is intended to help landowners in the project area access data showing the depth to aquifer material, the thickness of the aquifer and other basic information.  The information collected is also available for download and can be found here.

Once on the LPS NRD site scroll down to Interactive Map (5.5MB). for a full interactive map with aquifer information about individual tracts of land.  You will need to have a version of Google Earth installed on your computer. Once the maps open click any blue-shaded point to see detailed information about the aquifer.

SkyTEM mapping water in BC

Photo: Geoscience BC

Photo: Geoscience BC

SkyTEM has been  awarded a competitive Geoscience BC contract for an airborne magnetic and electromagnetic geophysical survey in the Peace Region of British Columbia. The Peace Project is a collaborative effort that will help to increase the understanding of surface and groundwater resources in the Peace Region. Peace Project partners include the BC Oil and Gas Commission, the BC Oil and Gas Research and Innovation Society, Conoco Phillips Canada, Progress Energy Canada Ltd., the Province of British Columbia, and the Northern Development Initiative Trust (NDIT).

For more information about the Peace Project, visit the project page at


SkyTEM mapping water in California

SkyTEM contract USGS

SkyTEM has been  awarded a competitive USGS contract for an airborne magnetic and electromagnetic geophysical survey at the Fort Irwin National Training Center (NTC) in California. The purpose of the survey is to map the complex geological framework, lithologic variations and structural controls (faults and folds) on groundwater within a series of basins within portions of the (NTC).

The data will be used for numerical inversion to determine the 3D extent of structural geologic features as well as to constrain models of the geologic and tectonic evolution of the region. The results will be used to create a geological framework to be input into groundwater flow models.

XRI Conducts SkyTEM Survey in Eastern Nebraska

SkyTEM system

Exploration Resources International Inc. (XRI) is conducting an Airborne Electromagnetic (AEM) Survey under contract to the Eastern Nebraska Water Resources Assessment (ENWRA). ENWRA is a coalition of six Natural Resources Districts (NRD’s) in the glaciated area of eastern Nebraska Including Lewis in Clark, Lower Elkhorn, Papio-Missouri, Lower Platte North, Lower Platte South, and Nemaha. XRI will collect the AEM data using the SkyTEM (Aarhus, Denmark) SkyTEM508 system flown by SkyTEM Canada Inc. (Ontario, Canada ) with subcontractors Southern Helicopters Inc. (Baton Rouge, LA) and Devbrio Geophysique Inc. (Quebec, Canada).

This survey is to continue a reconnaissance study of eastern Nebraska, that was begun in the northern portions of eastern Nebraska in October of 2014, by collecting approximately  700 line miles of data south of the Platte River to the Kansas State boarder in Butler, Saunders, Seward, Sharpy, Douglas, Lancaster, Cass, Otoe, Johnson, Nemaha, Richardson, Pawnee, and Gage counties.  XRI will use the AEM data collected to develop a hydrogeological framework of the area.  Results of this study will be delivered to ENWRA in July of 2015.

The World’s First Helicopter TEM/Gravity/Mag Systems

Canada 2015

SkyTEM and Sander Geophysics have teamed to offer combined deep looking MultiMoment® helicopter TEM systems with high resolution AIRGrav technology.

SkyTEM’s recent R&D efforts have led to an increase of the dipole moment to over 1,000,000 NIA. This high powered system, SkyTEM516, is yet another breakthrough in SkyTEM’s TEM technology.  The system was flown over the industry standard test site, Caber, in conjunction with Sanders’ AIRGrav system to compare SkyTEM data with other transient EM systems and to demonstrate the added value of including high-resolution airborne gravity data over complex mineral deposits. The case study utilizing the combined systems will be showcased at the Toronto PDAC in March 2015.

SkyTEM is the inventor of MultiMoment® TEM systems and holds a patent for this technology. All SkyTEM systems utilize MultiMoment® technology to deliver the combination of accurate high-resolution maps of subtle variations in geology from the very near surface to depths of hundreds of meters. An array of systems is available with a diverse range of map products. Inversions are available within 24 hours of acquisition and the company is proud to offer raw data for critical analysis.

AIRGrav is Sander Geophysics’ purpose built airborne gravimeter. This unique gravimeter is mounted on a three-axis inertially stabilized platform, combined with extremely accurate Differential GPS (DGPS) to correct for aircraft movement due to turbulence and aircraft vibrations. AIRGrav offers a number of advantages over competing systems, including: 1) significantly better resolution and accuracy; 2) ability to operate under normal daytime flying conditions; 3) ability to provide high quality gravity data while flying in drape mode; 4) significant operational efficiencies; and 5) shorter time required for data acquisition and processing.

This combination of cutting edge helicopter-borne technologies on a single cost effective platform offers economic solutions to all exploration sectors. High resolution EM and gravity data can now be collected concurrently, and surveys can be drape flown at low altitudes and at lower speeds than fixed wing aircraft.

Uncover more geology – from top to bottom.

For more information contact:

Gary Tipper – tel: +1-604-353-1421 – email:
Bill Brown – tel: +1-519-502-1436 – email:

Sander Geophysics Ltd:
Malcolm Argyle – tel: +1-613-521-9626 – email:

Download press release and data results in PDF format here.

SkyTEM now flying in Quebec

Airborne mapping in QuebecThe SKyTEM304 will begin flying a mineral exploration project in Quebec starting early May.

We can provide economic mobilization and quick start up for Projects on the East coast of Canada and the USA, so please contact us today for a quote.


Bill Brown, Regional Sales Manager

XRI and SkyTEM partner to deliver solutions for water exploration

geophysical water exploration partnership with XRIPartnership for geophysical water exploration

Exploration Resources International Geophysics, LLC (XRI) and SkyTEM Surveys (SkyTEM) have partnered to combine advanced methodology and technology for the exploration of water resources. As the world increasingly consumes water resources, management of these resources requires appropriate, reliable and timely information to ensure water is available when and where it is needed. This collaboration brings together highly developed expertise to deliver solutions focused on the acquisition, modeling and characterization of groundwater resources. The partnership combines years of XRI’s best-in-class geophysical and hydrogeological expertise with SkyTEM’s state-of-the-art airborne aquifer mapping technology. This combination of leading-edge knowledge and tools for assessing fresh and saline water resources will help communities, industries and resource sectors manage these limited and vulnerable resources sustainably, today and into the future. “Combining XRI’s hydrogeological expertise with SkyTEM’s advanced and focused helicopter-borne data acquisition systems allows us to deliver superior and accurate geological and hydrogeological information to governments and private industry at a time when it is needed most” said Jared Abraham, an XRI Senior Research Geophysicist. “High resolution images of the earth’s subsurface combined with our team’s knowledge and expertise at assessing water resources makes it possible for us to deliver critical and much needed information. Those faced with the challenges of properly managing their groundwater can now make informed and appropriate decisions”. Groundwater is one of the nation’s most important natural resources and it is increasingly essential to provide effective programs for management of aquifer systems worldwide. Proper management requires thorough knowledge of the aquifer system. This includes dependable information on geographic extents, volume, water quality recharge and outflow levels. SkyTEM’s airborne electromagnetic (AEM) systems are non-invasive and provide a quick economic method for mapping groundwater, particularly for large areas or areas where land access is limited or difficult. XRI interprets the airborne data to deliver 2D and 3D images used to build hydrogeological frameworks for groundwater quality investigations, groundwater flow modeling and groundwater management planning. “SkyTEM was developed specifically to map aquifers and this partnership allows us to deliver superior map products to our clients while meeting their specific needs and schedules” said Bill Brown, Regional Manager, SkyTEM Canada. “XRI’s capabilities and experience add a tremendous amount of value to our data and by working with us, our clients can now receive the full benefit from the quality and thoroughness of our work. Together we share a commitment to collecting and delivering the best possible data available in the market today.”

About XRI

XRI is a fully integrated geosciences company with proven solutions in geophysics, geology, hydrology, water resource engineering and management, geospatial applications and geotechnical engineering. XRI’s professional staff are expert in their fields and have decades of experience that spans seven continents. The company works closely and collaboratively with private and public industry and government customers to deliver comprehensive solutions through a variety of modeling, analytical and applied techniques.

About SkyTEM

SkyTEM is a time-domain airborne geophysical system engineered to deliver accurate high-resolution maps of changes in geology from the very near surface to depths of hundreds of meters. The SkyTEM method, developed in Denmark specifically to map aquifers, has been applied for groundwater studies worldwide – from mapping aquifers in the Galapagos Islands and salt water encroachment in Australia to identifying paleochannels in the USA’s Ogallala Aquifer and ice and water distribution beneath Antarctica. SkyTEM technology is also applied to a variety of environmental and engineering studies. For more information contact: XRI Lydia Henshaw, Portfolio Manager 6270 Highway 80 East Vicksburg, MS 39180 601-738-0236 SkyTEM Canada Inc. Bill Brown, Regional Sales Manager 62 Hall Street Ayr, Ontario N0B1E0 519-502-1436