Alaska Regional Seismic Network

Alaskan earthquakes are monitored by Alaska regional seismic network. The Alaska Earthquake Information Center (AEIC) records and analyzes data from several networks comprising about 400 sites (or about 800 channels of seismic data) throughout Alaska and the surrounding regions. Many of these stations are in very remote areas with extreme climatic conditions and can only be reached by helicopter, late in summer after the snow has melted. Of these, about 180 sites are operated by the Alaska Volcano Observatory (AVO), 18 by the West Coast and Alaska Tsunami Warning Center (WC/ATWC), 3 by IRIS, and 2 are newly installed as part of the ANSS network. About 40 sites in southern coastal Alaska were installed by the U.S. Geological Survey (USGS) and now are run by AEIC, with support from a National Earthquake Hazards Reduction Program grant. While majority of the sites are equipped with the short-period analog recording systems, we now have a total of 82 broadband digital stations operating in Alaska. Three of these are the Global Seismic Network stations, two are the newly installed ANSS sites, fifteen are installed by AVO on volcanoes, eight are operated by WC/ATWC, and the rest were installed by AEIC. In addition, AEIC is exchanging real-time data with Canadian regional network augmenting station coverage in the Alaska/Canada border region. AEIC also receives data from six Global Seismic Network sites in Eastern Russia.

AEIC broad-band stations:

1	ATKA	52.2027	-174.1955	0.0550	CREST	Atka Island
2	BAGL	60.4901	-142.0895	0.0550	STEEP	Bagley Icefield
3	BARK	60.4035	-142.4911	1.1415	STEEP	Barkley Ridge
4	BARN	61.0599	-141.6601	1.9150	STEEP	Barnard Glacier
5	BERG	60.3928	-143.7018	0.4740	STEEP	Berg Lake
6	BESE	58.5796	-134.8543	0.8702	CREST	Bessie Mountain
7	BGLC	60.1210	-143.2821	0.0100	STEEP	Bering Glacier BLM Camp
8	BMR	60.9682	-144.6030	0.8420	CREST	Bremner River
9	BPAW	64.1002	-150.9848	0.6190	AKBB	Bear Paw Mountain
10	CHUM	63.8827	-152.3147	0.0580	AKBB	Lake Minchumina
11	COLD	67.2274	-150.2013	0.3770	CREST	Coldfoot Broadband
12	DCPH	59.0912	-138.2136	0.6780	CREST	Deception Hills
13	DIV	61.1297	-145.7728	0.9390	CREST	Divide Microwave
14	DOT	63.6487	-144.0624	0.6710	CREST	Dot Lake
15	EYAK	60.5493	-145.7479	0.1463	CREST	Cordova Ski Area
16	FALS	54.8573	-163.4155	0.0457	CREST	False Pass
17	FIB	61.1662	-150.1753	0.0620	AKBB	Fire Island
18	GAMB	63.7767	-171.7008	0.0100	CREST	Gambell
19	GCSA	64.7461	-156.8792	0.0460	PEPP	Galena City School
20	GOAT	60.5810	-144.7271	0.8970	STEEP	Goat Mountain
21	GRIN	60.2810	-143.3190	0.6250	STEEP	Grindle Hills
22	GRNC	60.7319	-141.7538	2.1160	STEEP	Granite Creek
23	HARP	62.4076	-145.1550	0.6007	AKBB	HAARP
24	ISLEC	60.6025	-142.3391	1.4850	STEEP	Juniper Island
25	JIS	58.2762	-134.3831	0.0100	AKBB	Juneau Island
26	KHIT	60.4432	-143.2490	1.1010	STEEP	Khitrov Hills
27	KIAG	60.9236	-142.3587	1.7730;	STEEP	Kiagna River
28	KTH	63.5532	-150.9209	1.1720	AKBB	Kantishna Hills
29	KULT	60.2479	-142.7214	1.0060	STEEP	Kultieth River Mtn
30	LOGN	60.8245	-141.0028	1.6650	STEEP	Logan Glacier
31	MCAR	61.3841	-143.0219	0.4470	STEEP	McCarthy VSAT
32	MCK	63.7323	-148.9349	0.6180	AKBB	McKinley Park
33	MESA	60.1790	-141.9485	1.9190	STEEP	MESA
34	NICH	60.2366	-143.9672	0.5070	STEEP	Nichawak Mountain
35	NIKO	52.9388	-168.8667	0.0080	CREST	Nikolski
36	PAX	62.9704	-145.4676	1.1300	CREST	Paxson
37	PIN	60.0967	-140.2566	0.9750	CREST	Pinnacle
38	PNL	59.6675	-139.3996	0.5960	AKBB	Peninsula
39	PPLA	62.8968	-152.1870	1.5190	CREST	Purkeypile
40	PTPK	61.1874		1.9330	STEEP	Patty Peak Repeater
41	RAG	60.3869	-144.6751	0.7710	AKBB	Ragged Mountains
42	RC01	61.0896	-149.7368	0.3830	AKBB	Rabbit Creek
43	RKAV	60.2998	-141.3458	1.6470	STEEP	Rock Avalanche
44	SAMH	60.1298	-140.7809	1.1400	STEEP	Samovar Hills
45	SAW	61.8076	-148.3295	0.7820	AKBB	Sawmill
46	SPIA	57.1776	-170.2455	0.0840	CREST	St Paul Island
47	SUCK	60.0725	-143.7770	0.4670	STEEP	Suckling Hills
48	SWD	60.1049	-149.4507	0.0677	CREST	Seward (CREST station)
49	TABL	60.4403	-141.1423	2.0500	STEEP	Table Mountain
50	TNA	65.5606	-167.9240	0.0740	CREST	Tin City
51	TRAP	62.3350	-150.2440	0.1270	AKBB	Trapper Creek
52	TRF	63.4510	-150.2872	1.7170	AKBB	Thorofare Mountian
53	UNV	53.8465	-166.5020	0.0670	CREST	Unalaska Valley
54	VRDI	61.2280	-143.4524	1.8800	STEEP	Verde Repeater

In addition, AEIC operates and maintaines about 75 short period sites throughout the state, the Fairbanks strong-motion network (10 sites), the Anchorages strong-motion network (44 sites),and 13 Strong Motion accelerometers (SMA) in the Prince William Sound region. The SMAs are designed with a two-year routine site visit schedule. The SP stations have varying maintenance schedules from two to five years or more depending upon power source, and equipment failures.

IRIS stations:

1	ADK	51.8837	-176.6844	0.1160	BB	Adak
2	COLA	64.8738	-147.8511	0.1940	BB	College Outpost
3	KDAK	57.7828	-152.5835	0.1520	BB	Kodiak Island

ANSS stations:

1	EGAK	64.7774	-141.1581	0.2966	BB	Eagle, Alaska
2	WRAK	56.4191	-132.3466	0.0809	BB	Wrangell Island, Alaska

WC/ATWC stations:

1	AKUT	54.1352	-165.7719	0.0019	BB	Akutan School
2	CHGN	56.3014	-158.4142	0.0016	SP	Chignik
3	CRAG	55.4689	-133.1230	0.0579	BB	Craig
4	IMA2	66.0688	-153.6871	1.3180	SP	Indian Mountain 2
5	MENT	62.9380	-143.7194	0.7020	SP	Mentasta
6	MID	59.4278	-146.3389	0.0370	SP	Middleton Island
7	OHAK	57.2225	-153.2875	0.0775	BB	Old Harbor, Kodiak
8	PMR	61.5922	-149.1307	0.1000	BB	Palmer Observatory
9	SDPT	55.3493	-160.4766	0.0074	BB	Sand Point
10	SIT	57.0570	-135.3244	0.0190	BB	Sitka Observatory
11	SKAG	59.4601	-135.3290	0.0134	BB	Skagway
12	SMY	52.7308	174.1030	0.0580	BB	Shemya
13	SVW2	61.0973	-155.5809	0.4980	SP	Sparrevohn
14	TTA	62.9300	-156.0219	0.9140	SP	Tatalina
15	YKU2	59.5121	-139.6710	0.1010	SP	Yakutat

AVO networks:

1	Akutan	6 SP	5 BB
2	Aniakchak	6 SP
3	Augustine	9 SP	1 BB
4	Dutton	4 SP
5	Gareloi	6 SP
6	Great Sitkin	6 SP
7	Ilianma	6 SP
8	Kanaga	6 SP
9	Katmai	18 SP	2 BB
10	Korovin	7 SP
11	Little Sitkin	4 SP
12	Makushin	6 SP
13	Okmok	9 SP	4 BB
14	Pavlof	7 SP
15	Peulik	7 SP
16	Redoubt	7 SP
17	Semisopochnoi	6 SP	1 BB
18	Shishaldin	6 SP
19	Spurr	13 SP	3 BB
20	Tanaga	6 SP
21	Veniaminof	9 SP
22	Westdahl	6 SP
23	Wrangell	4 SP

Map of seismic stations - Alaska regional station map (interactive), current through March 2005

Updated: October 2006