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Slope and landslide management

GNS Science has the expertise, experience and resources to monitor, characterise and analyse land instability, including landslides, rock falls and erosion/deposition. Our team includes engineering geologists, geomorphologists and surveyors who use state of the art techniques and equipment to tell you why, how, where and how fast your land is moving.

Our Services include:

Surface Mapping
Landscape/terrain classification and identification of landslides and unstable slopes, remote sensing and terrestrial laser scanning
Land Instability Surveying and Monitoring

  • Long range Terrestrial Laser Scanner - only long range (1000m) TLS in New Zealand
  • GNSS - largest inventory of geodetic receivers in New Zealand
  • Monitoring total station - Leica
  • Precise levelling
  • High definition photography - gigapan
  • Real-time monitoring

Numerical Modelling

Stability analyses for slopes, landslides and natural dams using limit equilibrium finite element and runout modelling techniques.

  • Root-cause slope failure investigations
  • Rock mass characterisation for geotechnical analysis
  • Ground failure mechanism analysis
  • Numerical seismic slope stability analysis

Hazard and Risk Assessments

  • Evaluation of landslide types (ranging from debris flows to translational slides), natural dams and constructed slopes, including risk-based approaches
  • Landslide hazard assessments

Community Participation

Hazard management through community risk perception studies, social impact assessments, education, land-use planning and pre-event recovery planning.

Landslide Database

GNS Science manages the New Zealand Landslide database which includes the date, location, size and damage of significant landslides, as well as a list of all known landslides.
We can monitor:

  • historical information,
  • geomorphological mapping,
  • seismological measurements,
  • rainfall collection,
  • soil analysis, and
  • real time tracking of landslide movement.

Check out a collection of landslide-related data resources and tools on the GeoNet website.