Coastal Landslip Hazard Zone Assessment in Mowhanau, New Zealand
This study provides an up to date assessment to aid the decision making process to determine whether adjustments to the current hazard and buffer zones are required.
Coastal hazard zones (CHZs) describe the present and potential future coastal for a particular area of the coat. In 1999 coastal hazard zones were defined for a 2300 m stretch of coast line centred on the settlement of Mowhanau (Gibb, 1999). The major coastal hazard at Mowhanau is erosion and landslip, and so accordingly, Gibb (1999) split the CHZ in to three zones: Extreme Risk Zone (ERZ), High-Moderate Risk Zone (H-MRZ) and a Safety Buffer Zone (SBZ). In line with the recommendation of Gibb (1999), that the coastal hazard zones be reassessed between 2009 and 2014, this study provides an up to date, quantitative and qualitative, assessment of cliff line erosion rates, aiding the decision making process to determine whether adjustments to the current hazard and buffer zones are required.
