Sunday 05 May 2024


Threshold typeThreshold codeDescription
IMAPDIMAP-DNormalized rainfall intensity (IMAP) - Rainfall duration (D): IMAPD



Thresholds sorted by Continent

ContinentNationZoneThreshold typeLandslide codeEquationRangeNotesReferenceImage
AsiaHong Kongn.a.IMAPDDIMAP = 0.02×D-0.681 < D < 12n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
AsiaIndonesian.a.IMAPDDIMAP = 0.07-0.01×D1.002 < D < 24n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
AsiaJapann.a.IMAPDDIMAP = 0.03×D-0.631 < D < 12n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.00066×D-0.13300 < D < 4000(Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.0015×D-0.710.1 < D < 4000Mild, mid-latitude climatesGuzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.0194×D-0.730.1 < D < 700Mild, mid-latitude climates (Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.008×D-0.510.1 < D < 3000Highlands, severe mid-latitude climates Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.0064×D-0.630.1 < D < 3000Highlands, severe mid-latitude climates (Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.00099×D-0.19300 < D < 4000Mild, mid-latitude climates (Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.007×D-0.540.1 < D < 4000n.a.Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeCentral and Southern Europen.a.IMAPDAIMAP = 0.0064×D-0.640.1 < D < 700(Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2007) Rainfall threholds for the initiation of landslides in central and southern Europe. Meteorology and Atmospheric Physics 98: 239-267Graphic
EuropeItalyCancia, Dolomites, Friuli Venezia GiuliaIMAPDDIMAP = 0.74×D-0.560.1 < D < 100n.a.Bacchini M, Zannoni A (2003) Relations between rainfall and triggering of debris-flow: a case study of Cancia (Dolomites, Northeastern Italy). Natural Hazards and Earth System Sciences 3: 71-79Graphic
EuropeItalyCentral Alps, LombardyIMAPDDIMAP = 2.0×D-0.551 < D < 100n.a.Ceriani M, Lauzi S, Padovan N (1992) Rainfall and landslides in the Alpine area of Lombardia Region, central Alps, Italy. In: Internationales Symposium. Bern: Interpraevent 2: 9-20Graphic
EuropeItalyLanzo Valley, PiedmontIMAPDShIMAP = 1.6058×D-0.46441 < D < 200n.a.Aleotti P, Baldelli P, Bellardone G, Quaranta N, Tresso F, Troisi C, Zani A (2002) Soil slips triggered by October 13-16, 2000 flooding event in the Piedmont Region (North West Italy): critical analysis of rainfall data. Geologia Tecnica e Ambientale 1: 15-25Graphic
EuropeItalyNorth Eastern AlpsIMAPDDIMAP = 0.026×D-0.5070.1 < D < 24n.a.Paronuzzi P, Coccolo A, Garlatti G (1998) Eventi meteorici critici e debris flows nei bacini montani del Friuli. L'Acqua, Associazione Idrotecnica Italiana, Sezione I/Memorie: 39-50Graphic
EuropeItalyOrco Valley, PiedmontIMAPDShIMAP = 1.6832×D-0.55331 < D < 200n.a.Aleotti P, Baldelli P, Bellardone G, Quaranta N, Tresso F, Troisi C, Zani A (2002) Soil slips triggered by October 13-16, 2000 flooding event in the Piedmont Region (North West Italy): critical analysis of rainfall data. Geologia Tecnica e Ambientale 1: 15-25Graphic
EuropeItalyOssola Valley, PiedmontIMAPDShIMAP = 0.6222×D-0.22821 < D < 200n.a.Aleotti P, Baldelli P, Bellardone G, Quaranta N, Tresso F, Troisi C, Zani A (2002) Soil slips triggered by October 13-16, 2000 flooding event in the Piedmont Region (North West Italy): critical analysis of rainfall data. Geologia Tecnica e Ambientale 1: 15-25Graphic
EuropeItalyPiedmontIMAPDShIfMAP = 4.62×D-0.792 < D < 150n.a.Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265Graphic
EuropeItalyPiedmontIMAPDShIMAP = 0.76×D-0.332 < D < 150n.a.Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265Graphic
EuropeItalySesia Valley, PiedmontIMAPDShIMAP = 1.1122×D-0.24761 < D < 200n.a.Aleotti P, Baldelli P, Bellardone G, Quaranta N, Tresso F, Troisi C, Zani A (2002) Soil slips triggered by October 13-16, 2000 flooding event in the Piedmont Region (North West Italy): critical analysis of rainfall data. Geologia Tecnica e Ambientale 1: 15-25Graphic
North AmericaPuerto Ricon.a.IMAPDDIMAP = 0.06×D-0.591 < D < 12n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
North AmericaUSABlue RidgeIMAPDDIMAP = 0.09×D-0.632 < D < 16n.a.Wieczorek GF, Morgan BA, Campbell RH (2000) Debris flow hazards in the Blue Ridge of Central Virginia. Environ Eng Geosci 6: 3–23Graphic
North AmericaUSAn.a.IMAPDDIMAP = 0.03×D-0.210.5 < D < 8n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
North AmericaUSAn.a.IMAPDDIMAP = 0.03×D-0.331 < D < 12n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
North AmericaUSASan Francisco Bay AreaIMAPDDD = 46.1-3.6·103×IMAP + 7.4·104×IMAP21 < D < 24n.a.Cannon SH (1988) Regional rainfall-threshold conditions for abundant debris-flow activity. In: Landslides, Floods, and Marine Effects of the Etorm of January 3-5, 1982, in the San Francisco Bay Region, California (Ellen SD, Wieczorek GF, eds). US Geological Survey Professional Paper 1434, 35-42Graphic
South AmericaBraziln.a.IMAPDDIMAP = 0.06-0.02×D1.000.5 < D < 2n.a.Jibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic
Worldwiden.a.n.a.IMAPDSh, DIMAP = 0.0005×D-0.1348 < D < 1000(Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2008) The rainfall intensity-duration control of shallow landslides and debris flows: an update. Landslides 5: 3-17Graphic
Worldwiden.a.n.a.IMAPDSh, DIMAP = 0.0017×D-0.130.1 < D < 48(Threshold obtained from probability estimates of rainfall data)Guzzetti F, Peruccacci S, Rossi M, Stark CP (2008) The rainfall intensity-duration control of shallow landslides and debris flows: an update. Landslides 5: 3-17Graphic
Worldwiden.a.n.a.IMAPDSh, DIMAP = 0.0016×D-0.400.1 < D < 1000n.a.Guzzetti F, Peruccacci S, Rossi M, Stark CP (2008) The rainfall intensity-duration control of shallow landslides and debris flows: an update. Landslides 5: 3-17Graphic
Worldwiden.a.n.a.IMAPDDIMAP = 0.02×D-0.650.5 < D < 12Lower envelopeJibson RW (1989) Debris flow in southern Porto Rico. Geological Society of America, Special Paper 236, 29–55Graphic




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