to download report - Geological Survey of Ireland

CONTENTSPreface .................................................................................................................................................. iExecutive Summary .............................................................................................................................ii1. Introduction .................................................................................................................................. 11.1 Background.................................................................................................................................... 11.2 Irish Landslides Working Group...................................................................................................... 21.3 The Landslides Publication............................................................................................................. 32. Landslide Classification .............................................................................................................. 42.1 The Problem of Definition ............................................................................................................... 42.2 Landslide Movement Types ............................................................................................................ 42.3 Landslide Materials ........................................................................................................................ 72.4 Factors causing Landsliding ........................................................................................................... 83. The Irish Landslides Database ................................................................................................... 93.1 The Need for an Irish Landslides Database ..................................................................................... 93.2 Database Structure ........................................................................................................................ 93.3 Data Sources ................................................................................................................................. 93.4 Data Quality ................................................................................................................................... 103.5 Use of GIS in Landslides Research ................................................................................................ 113.6 General Analysis of Database Events ............................................................................................. 123.7 The Pollatomish Landslides - 2003 ................................................................................................. 153.8 The Derrybrien Landslide – 2003 .................................................................................................... 203.9 Irish Landslides Database - Recommendations .............................................................................. 214. Geotechnics of Landslides in Ireland ........................................................................................ 234.1 Introduction .................................................................................................................................... 234.2 Strength parameters of Soils and Rock .......................................................................................... 234.3 Role of water in landslides.............................................................................................................. 244.4 Geotechnics of landslides in “Mineral” soils.................................................................................... 264.5 Geotechnics of landslides in organic soils ...................................................................................... 274.6 Geotechnics of landslides in rock................................................................................................... 304.7 Recommendations for research ...................................................................................................... 315. Landslide Susceptibility Mapping in Ireland ............................................................................ 325.1 Landslide Susceptibility Mapping ................................................................................................... 325.2 Breifne Area Landslide Susceptibility Mapping ............................................................................... 47Chapter 5.2 Map Appendix ............................................................................................................. 59Chapter 5.2 Table Appendix ............................................................................................................ 636. Landslides and Planning ............................................................................................................ 656.1 Introduction .................................................................................................................................... 656.2 Current Practice on Landslides and Planning in Ireland .................................................................. 656.3 Building Control .............................................................................................................................. 676.4 Environmental Assessment ............................................................................................................ 68