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Surveying Avalanches in the French Alps

Location

Savoie Region, France

Scan time

2 hours

Size

3000 sq/m

Scanned

Avalanches and Snowpacks

Industry

Education

Assessing Levels of Energy Radiation through Differing Conditions

Climate Change is often attributed to greenhouse gases, however, there are also other factors that affect the Earth’s climate. One example of this is the ‘Earth’s radiation budget’. Earth’s radiation budget is energy that enters the earth’s atmosphere that is reflected, absorbed, or emitted by our planet. If the budget becomes out of balance, it can cause temperature increases or decreases in the Earth’s atmosphere.

A team from the Institut de Physique du Globe de Paris (IPGP), a world-renowned geosciences organisation, have conducted research in this field. Their research focuses on how differences in surface roughness effect the amount of microwave radiation picked up by satellites.

Comparing Surface Roughness of Snowpacks and Avalanches in the Vanoise Massif Mountain Range

For their research, the team have been concentrating on snowpacks and avalanches in the Vanoise Massif Mountain range. They aim to compare the two satellite observations to assess the effect of the change in roughness when avalanches form using radiative transfer modeling. This is the process that measures radiation from the Sun into and out of the Earth. High levels of sun radiation can cause snow to melt which, in turn, can cause avalanches.

The Vanoise Massif Mountain range is in the Granian Alps, in the Savoie region of France. It is the third highest massif in France, sitting at 3,885 meters at the summit Grande Casse. The range is the location of France’s first National Park, the Vanoise National Park.

The Mountain Range’s Dangerous and Difficult to Access Environments

To collect data from the snowpacks and avalanches, the team needed an accurate 3D model of the area. Vanoise National Park is a no-fly zone which meant that UAVs were not an option. Additionally, the team did not want to spend extended periods of time on the mountain due to the risk of avalanches. This ruled out more time-consuming methods of scanning, like terrestrial laser scanners.

As a result, the team needed a more efficient way of mapping the difficult area. They decided SLAM was their best option and chose to use GeoSLAM’s ZEB Horizon with the backpack solution.

We were looking for a portable, versatile and affordable LiDAR scanner solution and GeoSLAM allows us to meet all our constraints.

Using ZEB Horizon to Safely Map Avalanches in the Vanoise Massif Mountain Range

The walk and scan method and versatility of the ZEB Horizon stood out to the team from IPGP.  The specificity of the environment meant they needed to use technology that was easily movable and durable. In addition, the backpack solution was essential because it meant that the person carrying out the scan had their hands free to help them navigate the rough terrain.

Furthermore, the ZEB Horizon’s speed of capture meant the team were able to scan the 3000 sq/m area in approximately 2 hours. This ensured that they did not spend too long in the hazardous mountain range, whilst capturing the accurate data they needed.

Creating Accurate Data to be used in IPGP’s Research

The scan was processed using GeoSLAM’s software package. The resulting point cloud is being integrated in IPGP’s research analysis and modelling.

The ZEB Horizon’s ease of use and accuracy means the scan data can be compared with the data collected from the satellite observations. This is known as ground truth analysis and helps with clarity within the research. The scan data also aids with data calibration which allows for atmospheric effects and obstructions to be considered when analysing the final data.

The positive outcome of the data has encouraged the Institut de Physique du Globe de Paris to plan additional surveys in this area.

Monitoring environmental changes are just one of the ways GeoSLAM customers are using their mobile mapping devices, alongside more common everyday uses like measuring buildings or construction sites.

Thanks to the team at Institut de Physique du Globe de Paris for sharing their story with us.




If you’d like to learn more about how GeoSLAM solutions can help you, submit the form below.





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    GeoSLAM Sample Data

    View and download data in our free point cloud viewer

    Here’s some helpful tips for the best viewing experience

    • If your internet connection allows, move the Point Budget slider to the maximum amount available to view all the points in the cloud.
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    Chemical Plant

    Location: Europe
    ZEB Scanner: ZEB Horizon/ ZEB Discovery
    Scan time:
    15 Minutes

    Colourised data was captured using the ZEB Discovery backpack solution.

    Would you like to see a specific dataset that’s not on this page? Contact [email protected]

    How LiDAR Can Help Detect Change at a Community Micro Hydro Power Generation Site

    Location

    Congleton, UK

    Scan time

    25 Minutes

    Size

    100m x 100m Area

    Scanned

    Micro Hydro System

    Industry

    Surveying

    Discussions around climate change, and how we can lessen our environmental impact, have become increasingly more relevant in recent years. This has driven some companies and communities to explore different ways of producing renewable technologies, to reduce dependency on fossil fuels. One method for gathering renewable energy is by using Micro Hydro power generation.

    Hydroelectric power generation relies on a constant water cycle. Nature is perpetually replenishing this, making it a good clean source of energy. This method of producing electricity using hydroelectric power generation is what the Congleton Hydro Project has set out to achieve.

    Dane Valley Community Energy Ltd (DVCE), a non-profit community benefit society, developed and constructed the project. DVCE is a volunteer led organisation, run by a small team of volunteer directors, who have all worked within Engineering and Management Companies. Funded by the community of Congleton, the project aims to generate enough carbon-free electricity, using hydroelectric power generation, to power 60 homes within this local area.

    Utilising an Archimedean Screw for Micro Hydro Power Generation

    For this project, the team set up a Micro-Hydro System, including an Archimedean Screw. The hydroelectric energy is generated by the nearby Havannah Weir River. The energy is extracted by using the water flow to turn the Archimedean Screw, which is connected to an electrical generator.  Having constructed the whole system in just 12 months, DVCE were able to produce their first load of electricity in a relatively short space of time.

    The area surrounding the Archimedean Screw required significant and extensive ground works, together with a substantial walkway, powerhouse, and piped water inlet system. Whilst designing the project, it became apparent that a core worry would be movement of the terrain, due to weather and time. As a result, they decided they needed to frequently monitor this surrounding area.

    The Archimedean Screw has a life expectancy of 40 years, and the team hope to make returns on their investments in the next 20 years. In addition to generating clean energy, a core objective is to generate an annual surplus, which will fund the local community. It is therefore essential that any change in land stability does not impact the planned generation. The team decided that a monitoring system would help identify any movement so that timely corrective action could be taken.

    Tracking Changes in the Land and Facilities Management

    Via a family member (Dr Jonathan Owen), the team acquired a 3D handheld laser scanner, GeoSLAM’s ZEB Go. The handheld nature of the scanner will mean they can track land movement and vegetation rates over time. In addition, they can map the on-site building to help with facility management and storage.

    GeoSLAM Connect’s Stop and Go Alignment can help the team align these scans, as it would give them a more accurate view of the exterior and interior areas together.

    GeoSLAM technology is ideal for this type of work, due to the uneven terrain. The mobile device can map an area by simply walking around, whereas systems that require a more complicated setup would struggle to scan the area promptly.

    The Benefits of GeoSLAMs Technology

    The ZEB Go’s speed of capture enables DVCE to carry out scans of the 100m x 100m area surrounding the Micro-Hydro System in just 25 minutes. As the team are detecting change in the ground movements and vegetation, they can frequently scan the area to track any issues that may arise. A great way to document the area, as frequently as DVCE need.

    The ZEB Go’s ease of use means the team would not need to be survey trained for the scan, unlike more complicated to use scanning hardware. Further, the ZEB Go’s capabilities save all the team from having to repeatedly return to the site, as just one individual is needed.

    The team were impressed with the ease that the ZEB Go was used to survey the complete site, with no tripods being needed and no complicated set up.

    Creating Accurate Georeferenced Point Clouds

    Whilst capturing the data, the team laid down control points using a GNSS receiver. This allowed the team to georeference the data using GeoSLAM’s software. Now the surveying pins are in place, the team can simply georeference the data for each scan they conduct.

    Implementing control points was important for DVCE as it allows for clear comparisons between multiple scans of the same area. Georeferenced data places the scan in the real world and makes the data even more accurate. This will benefit the team as they continue to scan the Micro-Hydro System’s surrounding areas in the future and detect any gradual change.

    The ZEB Go delivered an accurate 3D replica of the area that continues to help DVCE in their project.  The versatility of the ZEB Go and resulting point cloud means the team can look into new ways to interpret the data – protecting this vital equipment for both the environment and local community.

    Jonathon was the lucky winner of our ‘Win a ZEB Go Competition’ at GeoBusiness 2021.

    If you’d like to learn more about how GeoSLAM solutions can help you, submit the form below.





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      GeoSLAM and its authorised partner network will use the information you provide to contact you about products and services. You may unsubscribe from these communications at any time. For information on how to unsubscribe, as well as our privacy practices and commitment to protecting your privacy, please review our Privacy Policy.

      Opt in to the FARO mailing list for updates and offers.


      GeoSLAM Sample Data

      View and download data in our free point cloud viewer

      Here’s some helpful tips for the best viewing experience

      • If your internet connection allows, move the Point Budget slider to the maximum amount available to view all the points in the cloud.
      • Making the point size smaller using the Point Size slider makes the data easier to view and interpret.
      • In the tools section of the viewer, you can measure the distance and angles of features within the pointcloud.
      • Using the materials section of the viewer, you can use the Select Attributes dropdown to view by intensity, elevation and RGB (if point cloud is coloured).

      British Residential Street

      Location: United Kingdom
      ZEB Scanner: ZEB Horizon
      Scan time:
      5 Minutes

      Colourised data was captured using the ZEB Vision camera accessory.

      Would you like to see a specific dataset that’s not on this page? Contact [email protected]

      GeoSLAM Sample Data

      View and download data in our free point cloud viewer

      Here’s some helpful tips for the best viewing experience

      • If your internet connection allows, move the Point Budget slider to the maximum amount available to view all the points in the cloud.
      • Making the point size smaller using the Point Size slider makes the data easier to view and interpret.
      • In the tools section of the viewer, you can measure the distance and angles of features within the pointcloud.
      • Using the materials section of the viewer, you can use the Select Attributes dropdown to view by intensity, elevation and RGB (if point cloud is coloured).

      Peak Cavern

      Location: Peak District, UK
      ZEB Scanner: ZEB Horizon
      Scan time:
      27 Minutes

      This data was captured as part of the Big SLAM Tour of the UK, read about it here.

      Would you like to see a specific dataset that’s not on this page? Contact [email protected]

      GeoSLAM Sample Data

      View and download data in our free point cloud viewer

      Here’s some helpful tips for the best viewing experience

      • If your internet connection allows, move the Point Budget slider to the maximum amount available to view all the points in the cloud.
      • Making the point size smaller using the Point Size slider makes the data easier to view and interpret.
      • In the tools section of the viewer, you can measure the distance and angles of features within the pointcloud.
      • Using the materials section of the viewer, you can use the Select Attributes dropdown to view by intensity, elevation and RGB (if point cloud is coloured).

      Vent Shaft

      Location: United Kingdom
      ZEB Scanner: ZEB Revo RT

      This data was captured using GeoSLAM’s ZEB Cradle accessory.

      Would you like to see a specific dataset that’s not on this page? Contact [email protected]

      One scanner, many solutions

      Boulby mine was one of the first in the world to use SLAM technology, having adopted GeoSLAM’s ZEB1 into their workflow, in 2013. Nowadays, the mine operates GeoSLAM ZEB Horizons for most of their survey needs.

      GeoSLAM Sample Data

      View and download data in our free point cloud viewer

      Here’s some helpful tips for the best viewing experience

      • If your internet connection allows, move the Point Budget slider to the maximum amount available to view all the points in the cloud.
      • Making the point size smaller using the Point Size slider makes the data easier to view and interpret.
      • In the tools section of the viewer, you can measure the distance and angles of features within the pointcloud.
      • Using the materials section of the viewer, you can use the Select Attributes dropdown to view by intensity, elevation and RGB (if point cloud is coloured).

      Lace Market

      Location: Nottingham, United Kingdom
      ZEB Scanner: ZEB Horizon
      Scan time:
      25 Minutes

      Colourised data was captured using the ZEB Vision camera accessory.

      Would you like to see a specific dataset that’s not on this page? Contact [email protected]