Basic HTML Version
Understanding the spatial and temporal occurrence of landslides using satellite and airborne technologies: Papua New Guinea
6
Conclusions
This researchhas demonstrated that freely-availableandpre-existingdata canbeused toanalyseanddevelopmodels
to inform landslide early warning/forecasting systems, in a data sparse region, such as PNG. It has been shown that
probabilistic rainfall thresholds can be developed using satellite-derived rainfall estimates and that satellite and
airborne remote sensing methods can be used to construct high resolution models of landslide susceptibility. As
with any modelling framework, there are a number of caveats and assumptions associated with the triggering-event
and landslide susceptibility models that need to be carefully considered. There is also a requirement for further
testing and calibration of the models prior to any real-world application. However, the techniques and data outlined
provide a cost-effective, robust and reproducible modelling framework, which could be employed by a range of
users to inform of periods of heightened landslide susceptibility. The relationships identified and the potential of this
modelling framework could be used to help mitigate landslide hazard in the region and, ultimately, reduce losses
associated with these events.
References
Adler, R.F., Huffman, G.J., Chang, A., Ferraro, R., Ping-Ping Xie, Janowiak, J., Rudolf, B., Schneider, U., Curtis, S.,
Bolvin, D., Gruber, A., Susskind, J., Arkin, P. And Nelkin, E. (2003). The Version 2 Global Precipitation Climatology
Project (GPCP) monthly precipitation analysis (1979-present). Journal of Hydrometeorology, 6, 1147-1167
Berti, M., Martina, M.L., Franceschini, S., Pignone, S., Simoni, A. & Pizziolo, M. (2012) Probabilistic rainfall thresholds
for landslide occurrence using a Bayesian approach. Journal of Geophysical Research: Earth Surface, 117,
F04006, doi: 10.1029/2012JF002367
Brabb, E.E. (1984) Innovative approaches to landslide hazard mapping, in: Landslides-Glissements de Terrain, IV
International Symposium on Landslides, Vol. 1, Toronto, Canada, pp. 307–323
Browne, T.J. (1994). Geotechnical review of Hides-2 Wellsite, Southern Highlands Province, Papua New Guinea
Geological Survey Technical Note TN 1/94, Port Moresby, Papua New Guinea
Coe, J.A., Godt, J.W., Baum, R.L., Bucknam, R.C. & Michael, J.A. (2004) Landslide susceptibility from topography in
Guatemala. In: Lacerda et al (Eds) Landslide evaluation and stabilization, Taylor and Francis Group, London, pp
69-78
Fookes, P.G. & Dale, S.G. (1992). Comparison of interpretations of a major landslide at an earthfill dam site in Papua
New Guinea. Quarterly Journal of Engineering Geology, 25, 313-330
Frattini, P., Crosta, G. & Sosio, R. (2009) Approaches for defining thresholds and return periods for rainfall-triggered
shallow landslides. Hydrological Processes, 23, 1444-1460
Fuhrmann, C.M., Konrad II, C.E. & Band, L.E. (2008). Climatological perspectives on the rainfall characteristics
associated with landslides in western north California. Physical Geography, 29, 4, 289-305
Griffiths, J.S., Hutchinson, J.N., Brunsden, D., Petley, D.J. & Fookes, P.G. (2004). The reactivation of a landslide
during the construction of the Ok Ma tailings dam, Papua New Guinea. Quarterly Journal of Engineering Geology
and Hydrogeology, 37, 173-186
Huffman, G.J., Bolvin, D.T., Nelkin, E.J., Wolf, D.B., Adler, R.F., Gu, G., Hong, Y., Bowman, K.P. & Stocker, E.F. (2007)
The TRMM Multisatellite Precipitation Analysis (TMPA): Quasi-Global, Multiyear, Combined-Sensor Precipitation
Estimates at Fine Scales. Journal of Hydrometeorology, 8, 38–55
Itiogen, P. (2007). Bultem village landslide assessment report: May 2007. SMEC PNG Ltd Project J0382 Report,
Boroko, Papua New Guinea
King, J., Loveday, I. & Schster, R.L. (1989). The 1985 Bairaman landslide dam and resulting debris flow, Papua New
Guinea. Quarterly Journal of Engineering Geology, 22, 257, 270
Kuna, G. & Moihoi, M. (2006). Bak Valley Landslide assessment report, Telefomin District, Sandaun Province, Papua
New Guinea Geological Survey Technical Note TN 4/2006, Port Moresby, Papua New Guinea
Lin, M.L., Chen, T.W., Lin, C.W., Ho, D.J., Cheng, K.P., Yin, H.Y.. & Chen, M.C. (2014) Detecting large-scale landslides
using lidar data and aerial photos in the Namasha-Liuoguey Area, Taiwan. Remote Sensing, 6, 42-63