Simple topographic parameter reveals the along-trench distribution of frictional properties on shallow plate boundary fault

Koge, Hiroaki; Ashi, Juichiro; Park, Jin-Oh; Miyakawa, Ayumu; Yabe, Suguru

doi:10.1186/s40623-022-01621-6

Earth, Planets and Space

Table 2 Slopes measured along bathymetric profiles on the landward side of the Japan Trench

From: Simple topographic parameter reveals the along-trench distribution of frictional properties on shallow plate boundary fault

No.	Trench axis		Line direction	α(R > 0.90)	No.	Trench axis		Line direction	α(R > 0.90)	No.	Trench axis		Line direction	α(R > 0.90)
No.	Lat	Lon	Degrees (clockwise)	Degrees	No.	Lat	Lon	Degrees (clockwise)	Degrees	No.	Lat	Lon	Degrees (clockwise)	Degrees
1	34.53	141.99	− 83	8.27	29	37.21	143.64	− 57	2.78	57	39.87	144.31	− 75	5.74
2	34.58	142.08	− 83	–	30	37.31	143.68	− 57	2.88	58	39.91	144.32	− 75	6.70
3	34.70	142.09	− 83	5.81	31	37.37	143.73	− 57	3.83	59	39.95	144.29	− 75	8.10
4	34.81	142.11	− 83	6.44	32	37.48	143.77	− 57	4.83	60	39.99	144.31	− 75	7.01
5	34.94	142.13	− 83	6.92	33	37.57	143.82	− 57	4.08	61	40.06	144.32	− 75	7.69
6	35.04	142.15	− 83	7.36	34	37.74	143.89	− 75	4.97	62	40.13	144.32	− 75	8.70
7	35.16	142.17	− 83	6.94	35	37.86	143.95	− 75	4.48	63	40.22	144.35	− 75	5.68
8	35.24	142.20	− 83	7.41	36	37.97	143.98	− 75	4.47	64	40.29	144.40	− 65	5.67
9	35.34	142.23	− 83	8.89	37	38.14	144.01	− 75	3.35	65	40.36	144.40	− 65	6.03
10	35.46	142.23	− 83	5.82	38	38.25	144.03	− 75	5.07	66	40.39	144.42	− 65	5.05
11	35.49	142.27	− 83	5.29	39	38.32	144.07	− 75	4.18	67	40.46	144.45	− 65	3.26
12	35.55	142.35	− 83	6.73	40	38.46	144.09	− 75	4.31	68	40.53	144.49	− 65	2.92
13	35.64	142.41	− 83	–	41	38.61	144.11	− 75	3.71	69	40.56	144.52	− 65	2.88
14	35.71	142.44	− 83	7.46	42	38.78	144.15	− 75	3.92	70	40.61	144.56	− 65	2.91
15	35.81	142.47	− 83	–	43	38.89	144.16	− 75	6.36	71	40.66	144.58	− 65	4.40
16	35.89	142.50	− 57	–	44	38.99	144.19	− 75	5.67	72	40.71	144.61	− 65	5.00
17	35.96	142.56	− 57	–	45	39.01	144.19	− 75	5.60	73	40.75	144.63	− 65	4.89
18	35.97	142.60	− 57	8.58	46	39.08	144.21	− 75	5.36	74	40.79	144.66	− 65	–
19	36.06	142.72	− 57	–	47	39.15	144.21	− 75	6.14	75	40.83	144.66	− 65	–
20	36.20	142.85	− 57	6.28	48	39.19	144.22	− 75	6.85	76	40.85	144.66	− 65	–
21	36.38	142.97	− 57	5.41	49	39.27	144.20	− 75	−	77	40.90	144.70	− 65	2.01
22	36.54	143.11	− 57	4.67	50	39.41	144.22	− 75	8.51	78	40.94	144.70	− 65	1.79
23	36.58	143.16	− 57	3.55	51	39.47	144.23	− 75	8.92	79	40.98	144.80	− 65	1.96
24	36.70	143.27	− 57	3.55	52	39.49	144.22	− 75	9.10	80	41.01	144.80	− 65	2.62
25	36.82	143.39	− 57	3.26	53	39.59	144.23	− 75	8.30	81	41.07	144.80	− 65	4.56
26	36.97	143.46	− 57	2.86	54	39.63	144.24	− 75	7.90	82	41.10	144.80	− 65	–
27	37.02	143.50	− 57	2.53	55	39.71	144.27	− 75	5.85
28	37.11	143.57	− 57	2.78	56	39.78	144.29	− 75	6.38

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