Identification of landslides and vegetation recovery assesment after Hurricane Mitch in La Ceiba and El Porvenir, Honduras

M. C. Valdez, C. F. Chen, L. Y. Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Hurricane Mitch in Honduras in 1998 produced unprecedented damages throughout the country. Estimations indicate that landslides damaged 70% of the road network and cause nearly 1,000 fatalities. Torrential rainfall from Hurricane Mitch in 1998 triggered many landslides within the counties of La Ceiba and El Porvenir in the Atlantic region of Honduras in a National reserve area. In this study we identify landslides after Hurricane Mitch in La Ceiba and El Porvernir county areas and its vegetation recovery using Landsat satellite images. Multidate Landsat satellite images were acquired previous (1997) and after (1999) the hurricane Mitch. The images were pre-processed and used to determine change detection using Change Vector Analysis (CVA). To eliminate undesirable change pixels and noise, majority filter and slope and were used. The vegetation recovery is estimated using a Vegetation Recovery Rate (VRR) calculated from NDVI derived from satellite images acquired in 2005 and 2011 for Hurricane Mitch. The identification of landslides and the vegetation recovery analysis provides useful information for locating the damage caused by landslides and monitoring their recovery after a Hurricane event. This information helps for different purposes such as relocation efforts of population, urban planning, estimation of damage caused by landslides, and planning the vegetation recovery of the landslides in perturbated protected areas to reduce sediment flows.

Original languageEnglish
Title of host publication32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Pages2710-2715
Number of pages6
StatePublished - 2011
Event32nd Asian Conference on Remote Sensing 2011, ACRS 2011 - Tapei, Taiwan
Duration: 3 Oct 20117 Oct 2011

Publication series

Name32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Volume4

Conference

Conference32nd Asian Conference on Remote Sensing 2011, ACRS 2011
Country/TerritoryTaiwan
CityTapei
Period3/10/117/10/11

Keywords

  • Change vector analysis
  • Landsat
  • Landslides
  • Vegetation recovery rate

Fingerprint

Dive into the research topics of 'Identification of landslides and vegetation recovery assesment after Hurricane Mitch in La Ceiba and El Porvenir, Honduras'. Together they form a unique fingerprint.

Cite this