Electronic Supplement to Imaging the Plate Interface in the Cascadia Seismogenic Zone: New Constraints from Offshore Receiver Functions

by H. A. Janiszewski and G. A. Abers

Table S1. Station Parameters

Station*	Latitude (°)	Longitude (°)	Depth (m)	Events	Orientation (° CW from north)	95% Confidence Range (° CW from north)	Location†
FN01C	46.88	−124.33	56	8	45	33–55	GHFS
FN02C	46.95	−124.43	67	9	125	121–134	GHFS
FN03C	46.89	−124.53	93	6	10	341–39	GHFS
FN04C	46.92	−124.60	104	6	145	139–153	GHFS
FN05C	46.86	−124.66	123	2	55	38–73	GHFS
FN07A*	46.86	−124.79	154	10	110	104–111	GHFS
FN07C*	46.86	−124.79	158	13	165	159–166	GHFS
FN08C	46.89	−124.88	176	10	320	317–326	GHFS
FN09C	46.84	−124.89	198	6	160	149–170	GHFS
FN10C	46.90	−124.99	811	2	315	290–340	GHFS
FN11C	46.82	−125.05	619	7	230	226–236	GHFS
FN12C	46.89	−125.12	656	12	285	276–291	GHFS
FN13C	47.00	−125.30	1764	12	75	65–80	GHFS
FN14A*	47.02	−124.96	173	8	5	352–15	GHFS
FN14C*	47.02	−124.96	173	7	225	218–231	GHFS
FN16A	46.80	−125.52	1907	5	225	219–232	GHFS
FN18A	46.70	−124.72	163	6	295	273–314	GHFS
FN19C	46.73	−124.37	72	3	70	58–84	GHFS
J57C	47.08	−124.45	67	5	65	58–75	GHFS
J23A*	44.84	−129.68	2655	1	130	119–139	JdF Ridge
J23C*	44.84	−129.68	2653	18	140	139–141	JdF Ridge
J31A*	45.55	−129.67	2657	2	340	324–357	JdF Ridge
J31C*	45.55	−129.67	2624	18	230	229–231	JdF Ridge
J39A*	46.18	−129.64	2659	5	310	305–311	JdF Ridge
J39C*	46.18	−129.64	2656	22	255	254–255	JdF Ridge
J47A*	46.84	−129.71	2744	3	250	243–259	JdF Ridge
J47C*	46.84	−129.71	2679	19	215	214–217	JdF Ridge
J06A	43.25	−128.80	3224	1	250	199–300	—
J21C	44.53	−128.04	2847	9	45	38–50	—
J25A*	44.47	−124.62	143	1	345	255–75	—
J25C*	44.47	−124.62	144	4	170	149–193	—
J28C	45.06	−127.16	2889	4	190	178–198	—
J29C	45.17	−128.01	2816	9	55	54–58	—
J30C	45.43	−128.91	2786	11	60	54–61	—
J32C	45.71	−130.60	2756	14	115	113–116	—
J33A*	45.11	−124.57	348	2	350	330–5	—
J33C*	45.11	−124.57	354	4	215	212–221	—
J34C	45.31	−125.42	2580	14	305	300–315	—
J35A*	45.50	−126.27	2662	1	205	181–234	—
J35C*	45.50	−126.27	2655	1	120	94–146	—
J36A	45.69	−127.12	2821	1	25	340–65	—
J37A*	45.86	−127.99	2862	1	260	232–290	—
J37C*	45.86	−127.99	2886	10	225	220–226	—
J38C	46.04	−128.85	2731	4	235	228–240	—
J41A*	45.81	−124.54	175	6	35	19–47	—
J41C*	45.81	−124.54	171	7	335	330–341	—
J42A*	45.93	−125.30	1540	5	100	85–115	—
J42C*	45.93	−125.30	1550	11	210	209–212	—
J43C	46.14	−126.17	2645	7	295	292–303	—
J44A*	46.32	−127.04	2724	1	220	185–253	—
J44C*	46.32	−127.04	2742	1	120	100–143	—
J45C	46.52	−127.90	2742	2	90	78–101	—
J46C	46.66	−128.79	2744	5	180	175–182	—
J48C	47.13	−130.65	2940	6	270	263–274	—
J49A*	46.44	−124.43	120	5	235	229–239	—
J49C*	46.44	−124.43	113	5	90	85–106	—
J50A*	46.64	−125.30	1909	2	85	72–95	—
J50C*	46.64	−125.30	1931	6	320	305–335	—
J52C	46.99	−127.02	2640	2	125	112–137	—
J53C	47.16	−127.92	2717	7	290	289–296	—
J54A*	47.34	−128.81	2662	1	345	317–18	—
J54C*	47.34	−128.81	2666	9	85	79–87	—
J57A	47.08	−124.45	56	2	240	216–263	—
J58C	47.32	−125.53	1527	9	85	78–96	—
J59A	47.51	−126.42	2371	1	175	85–265	—
J61A*	47.87	−128.20	2644	3	265	256–263	—
J61C*	47.87	−128.20	2673	6	160	158–166	—
J65C	47.89	−125.14	169	2	120	101–135	—
J67C	48.15	−127.09	2581	6	185	183–188	—
J69C	48.63	−128.74	2544	3	45	37–55	—
J73C	48.77	−126.19	133	2	330	313–348	—
M01C	49.15	−126.72	138	6	150	143–155	—
M03A*	47.89	−126.10	1818	2	185	145–224	—
M03C*	47.89	−126.10	1839	9	325	318–327	—
M04C	45.56	−125.19	570	3	115	105–121	—
M05C	46.17	−124.93	837	9	195	188–202	—
M06C	45.53	−124.93	1460	7	350	344–354	—
M07A	44.90	−125.12	1357	6	90	88–96	—
M08A	44.12	−124.90	126	3	340	320–4	—
M08C	44.12	−124.12	131	8	85	74–91	—

*Designates pairs of stations from two different deployment years (A, year 1; C, year 3) that were processed separately for orientation analysis but subsequently combined as a single site for receiver function analysis.

†GHFS, Grays Harbor focus site; JdF ridge, Juan de Fuca ridge.

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