Weights of evidence modeling for landslide susceptibility mapping of Kabi-Gebro locality, Gundomeskel area, Central Ethiopia

Getachew, Nega; Meten, Matebie

doi:10.1186/s40677-021-00177-z

Geoenvironmental Disasters

Table 1 The input data used in the analyses and results obtained from Weights of Evidence model

From: Weights of evidence modeling for landslide susceptibility mapping of Kabi-Gebro locality, Gundomeskel area, Central Ethiopia

Factors	Class	Nclass	Npix1 = Nslclass	Npix2	Npix3	Npix4	W+	W-	C
Slope (degree)	< 5	29,863	361	13,043	29,502	178,848	−1.660	0.125	−1.785
	5–15	111,669	3096	10,308	108,573	99,777	−0.814	0.474	−1.287
	15–25	52,516	4131	9273	48,385	159,965	0.283	−0.104	0.387
	25–35	22,125	3864	9540	18,261	190,089	1.191	−0.248	1.439
	35–45	5161	1760	11,644	3401	204,949	2.085	−0.124	2.209
	> 45	420	192	13,212	228	208,122	2.572	−0.013	2.585
Aspect	Flat (−1)	77	2	13,404	76	208,274	−0.894	0.000	−0.894
	N (0–22.5 & 337.5–360)	41,881	2462	10,943	39,419	168,931	−0.030	0.007	−0.036
	NE (22.5–67.5)	31,906	1698	11,707	30,208	178,142	−0.135	0.021	−0.156
	E (67.5–102.5)	22,465	975	12,430	21,490	186,860	−0.349	0.033	−0.383
	SE (112.5–157.5)	16,473	539	12,866	15,934	192,416	−0.643	0.039	−0.681
	S (157.5–202.5)	21,183	990	12,415	20,193	188,157	−0.272	0.025	−0.297
	SW (202.5–247.5)	23,047	1714	11,691	21,333	187,017	0.222	−0.029	0.251
	W (247.5–292.5)	28,770	2304	11,101	26,466	181,884	0.302	−0.053	0.355
	NW (292.5–337.5)	35,953	2721	10,684	33,232	175,118	0.241	−0.053	0.294
Curvature	Concave (−5.45--0.01)	95,953	6749	6656	89,204	119,146	0.162	−0.141	0.303
	Flat (−0.01–0.01)	30,095	1220	12,185	28,875	179,475	−0.421	0.054	−0.474
	Convex (0.01–4.78)	95,707	5436	7969	90,271	118,079	−0.066	0.048	−0.114
lithology	Residual soil deposit	4418	74	13,331	4344	204,003	−1.329	0.016	−1.344
	Sandstone	3068	42	13,363	3026	205,321	−1.534	0.011	−1.545
	Limestone	108,975	5877	7528	103,098	105,249	−0.121	0.106	−0.227
	Alluvial deposit	3568	385	13,020	3183	205,164	0.631	−0.014	0.645
	MW Basalt	36,834	5149	8256	31,685	176,662	0.927	−0.320	1.246
	Colluvial deposit	29,493	1728	11,677	27,765	180,582	−0.033	0.005	−0.038
	HW Basalt	35,396	150	13,255	35,246	173,101	−2.716	0.174	−2.890
Land use/land cover	Bush Land	46,816	5408	7997	41,408	166,942	0.708	−0.295	1.003
	Moderately Vegetated Forest	5739	119	13,286	5620	202,730	−1.111	0.018	−1.130
	Grazing Land	35,835	1725	11,680	34,110	174,240	−0.241	0.041	−0.282
	River	3123	404	13,001	2719	205,631	0.837	−0.017	0.854
	Settlement	12,646	74	13,331	12,572	195,778	−2.392	0.057	−2.448
	Bare Land	11,970	1632	11,773	10,338	198,012	0.898	−0.079	0.976
	Agricultural Land	105,626	4043	9362	101,583	106,767	−0.480	0.310	−0.790
Distance to lineament (m)	0–50	16,723	3309	10,096	13,414	194,936	1.344	−0.217	1.561
	50–100	16,381	2249	11,156	14,132	194,218	0.906	−0.113	1.019
	100–150	16,100	1705	11,700	14,395	193,955	0.610	−0.064	0.675
	150–200	12,332	1143	12,262	11,189	197,161	0.462	−0.034	0.496
	200–250	14,409	1143	12,262	13,266	195,084	0.292	−0.023	0.315
	250–300	12,849	877	12,528	11,972	196,378	0.130	−0.008	0.138
	> 300	132,961	2979	10,426	129,982	78,368	−1.032	0.726	−1.759
Distance to stream (m)	0–50	44,548	2890	10,515	41,658	166,691	0.075	−0.020	0.095
	50–100	36,022	1876	11,529	34,146	174,203	−0.158	0.028	−0.186
	100–150	35,312	1554	11,851	33,758	174,591	−0.335	0.054	−0.388
	150–200	26,348	1234	12,171	25,114	183,235	−0.270	0.032	−0.301
	200–250	24,021	1546	11,859	22,475	185,874	0.067	−0.008	0.075
	250–300	18,460	1132	12,273	17,328	191,021	0.015	−0.001	0.017
	> 300	37,043	3173	10,232	33,870	174,479	0.376	−0.093	0.468
Distance to spring (m)	0–100	2774	353	13,052	2421	205,928	0.818	−0.015	0.833
	100–200	6755	752	12,653	6003	202,346	0.666	−0.028	0.695
	200–300	10,341	990	12,415	9351	198,998	0.498	−0.031	0.529
	300–400	11,389	947	12,458	10,442	197,907	0.343	−0.022	0.365
	400–500	13,739	978	12,427	12,761	195,588	0.175	−0.013	0.187
	500–600	14,082	863	12,542	13,219	195,130	0.015	−0.001	0.016
	> 600	162,674	8522	4883	154,152	54,197	−0.152	0.337	−0.488
Rainfall (mm/year)	927–947	12,275	513	12,892	11,762	196,547	−0.389	0.019	−0.408
	947–967	33,327	1297	12,108	32,030	176,279	−0.463	0.065	−0.528
	967–987	46,191	3557	9848	42,634	165,675	0.260	−0.079	0.339
	987–1007	51,152	3880	9525	47,272	161,037	0.243	−0.084	0.328
	1007–1027	44,816	1532	11,873	43,284	165,025	−0.598	0.112	−0.709
	1027–1047	26,741	1874	11,531	24,867	183,442	0.158	−0.023	0.181
	1047–1064	7212	752	12,653	6460	201,849	0.593	−0.026	0.619

Note: A total number of pixels with a landslide (Nslide = 13,405) and the total number of pixels within a map (Nmap = 221,754)

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