Sweeping trees, homes and people in a flow of earth and debris, landslides can thunder down mountains and hillsides, often with little or no warning to those in danger. They can occur in many places around the world, costing billions of dollars and causing numerous fatalities and injuries each year. They can occur on a spectrum from very suddenly to slowly, and may be triggered by both natural and human-induced changes in the environment, most commonly slope loading or excavation, land-use change, such as deforestation, and hydrological changes, such as increased seepage. These factors when combined with the forces of gravity can cause instability. But the impact of landslides or slope instability may not have to be as severe as it could be, these areas can often be identified and land-use planning can be an effective part of mitigation.

How Natural Hazards New Zealand can help:

Any landslide plan first begins with an assessment of the hazard and risk your region faces. For this, Natural Hazards New Zealand can undertake microzonation and hazard vulnerability studies; damage and loss assessment modelling; and economic impact studies. When your region’s landslide hazard and risk has been assessed, we at the Natural Hazards New Zealand (NHNZ) cluster know that good emergency response planning; soil conservation and land capability assessments; land-use planning; and community awareness can reduce landslide impacts or even prevent them from happening. As you will see from our landslide-related projects below, we’re already employed around the globe with this type of planning and preparedness, including several World Bank, Asia Development Bank, United Nations Development Programme, NZAid and AusAID-funded initiatives.

If your region is prone to landslides, but does not have landslide plans in place, or your plans need upgrading, we would like to help.

Click here to view some NHNZ landslide projects

Natural Hazards Inc. members and their key experts with experience on landslide:

GNS Science

Geoconsulting Ltd

Massey University/GNS Science - Joint Centre for Disaster Research

Testing Support Institute