Tuesday 28 January 2025

Rainfall thresholds in Piedmont (sorted by Threshold type)

Nation	Zone	Threshold type	Landslide code	Equation	Range	Notes	Reference	Image
Italy	Piedmont	CMAPD	Sh	CMAP = -10.465 + 8.35×lnD	5 < D < 30	n.a.	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265	Graphic
Italy	Piedmont	EMAP	A	0.10 < EMAP < 0.25	n.a.	3 to 15 landslides per km2	Govi M, Sorzana PF (1980) Landslide susceptibility as function of critical rainfall amount in Piedmont basin (North-Western Italy). Studia Geomorphologica Carpatho-Balcanica 14: 43-60	Graphic
Italy	Piedmont	EMAP	A	0.22 < EMAP < 0.31	n.a.	up to 30 landslides per km2	Govi M, Sorzana PF (1980) Landslide susceptibility as function of critical rainfall amount in Piedmont basin (North-Western Italy). Studia Geomorphologica Carpatho-Balcanica 14: 43-60	Graphic
Italy	Piedmont	EMAP	A	0.28 < EMAP < 0.38	n.a.	up to 60 landslides per km2	Govi M, Sorzana PF (1980) Landslide susceptibility as function of critical rainfall amount in Piedmont basin (North-Western Italy). Studia Geomorphologica Carpatho-Balcanica 14: 43-60	Graphic
Italy	Piedmont	EMAPI	S, D, M	0.30×I-0.39	3.5 ≤ I ≤ 20	For summer and autumn	Govi M, Mortara G, Sorzana P (1985) Eventi idrologici e frane. Geologia Applicata & Ingegneria 20(2): 359–375	Graphic
Italy	Piedmont	EMAPI	S, D, M	0.72×I-0.68	20 ≤ I ≤ 50	For summer	Govi M, Mortara G, Sorzana P (1985) Eventi idrologici e frane. Geologia Applicata & Ingegneria 20(2): 359–375	Graphic
Italy	Piedmont	EMAPI	S, D, M	0.13×I-0.12	1.5 ≤ I ≤ 8	For winter and spring	Govi M, Mortara G, Sorzana P (1985) Eventi idrologici e frane. Geologia Applicata & Ingegneria 20(2): 359–375	Graphic
Italy	Piedmont	ID	A	I = 44.668×D-0.78×N	1 < D < 1000	n.a.	Barbero S, Rabuffetti D, Zaccagnino M (2004) Una metodologia per la definizione delle soglie pluviometriche a supporto dell'emissione dell'allertamento. In: Proceedings of 29th Convegno Nazionale di Idraulica e Costruzioni Idrauliche. Trento, 7-10 settembre 2004, 211-217	Graphic
Italy	Piedmont	ID	Sh	I = 19×D-0.50	4 < D < 150	n.a.	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247–265	Graphic
Italy	Piedmont	IMAPCMAP	Sh	IMAP = 0.54 - 0.09 × ln CMAP	7 < CMAP < 60	General threshold	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: 15–25	Graphic
Italy	Piedmont	IMAPCMAP	Sh	IMAP = 0.51 - 0.09 × ln CMAP	7 < CMAP < 60	Low magnitude	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265	Graphic
Italy	Piedmont	IMAPCMAP	Sh	IMAP = 0.70 - 0.09 × ln CMAP	7 < CMAP < 60	High magnitude	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265	Graphic
Italy	Piedmont	IMAPD	Sh	IfMAP = 4.62×D-0.79	2 < D < 150	n.a.	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265	Graphic
Italy	Piedmont	IMAPD	Sh	IMAP = 0.76×D-0.33	2 < D < 150	n.a.	Aleotti P (2004) A warning system for rainfall-induced shallow failures. Engineering Geology 73: 247-265	Graphic

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