NUREG .

WES-23B-O30

NetworkNortheastern U.S. Seismic

No. 17Bulletin

of

OCTOBER 01, 1979 - DECEMBER 31, 1979

Compiled and Edited by

E.F. Chiburi_*R.O. Ahner*

Consult.ant.s t.oWest.on Ob..rvat.orw

Depart.ment. of Geolo.w and GeophwsicsBost.on Coll..e

*Nowat ENSCO. Inc.P.O.Box 257B.Indian Harbour Beach.FL 32937

CoordinatorPaul W. Pamerow. United st.t.s Geolo.ical SurYe~

AUGUST 1980

HEHBERSWeston Obs.rvatory of Boston Coll..e

Hassachus.tts Institut. of T.chnolo.~Lamont-Doherty Geolo.ical Observatorw of Columbia Univ.rsitw

Pennswlvania State UniversitwDelBwBre Geolo.icBl Survew

HBin. Geolo.ical SurvewState Universitw of New York at Stonw Brook

Nuclear Re.ulatorw CommissionUnited S~.te. Geolo.ical Survew

N.~ional Science FoundationNew York S~a~e Ener.w and Resources Development Authoritw

Now Yofk Stat. Science Service

ABSTRACT

ofThis report is the seventeenth Guarterl~ bulletin

in the northeastern United States for the periodseismici't,w

Oc~ober - December 1979. Included are geographic maps of

and seismicitw during the Quarter, and ofstationsnetwork

the cuIfIIJlative seisnlicit':l tor the seventeen Quarters. Also

of station locations. epicenters. andincluded tablesare

An Appendix describesall event data for the Guarter.

northeastern Unitedfor themodels appropriatevelocitw

States

.

Pa~e 2

ACKNOWLEDGMENTS

Partial or full support from various agencies 1'or the

operation of the Northeastern U.S. Seismic Network(NEUSSN)

is ~ratefully acknowled~ed. support toA~enc1es prov1din~

members 0" NEUSSN include the u.s. ResulatorwNuclear

Commission, Office of Reactor Safet,=, Research; the u.s

Geolosical Office of Ea rthol.Jake Studies; theSurve"=,,

theNational Science Foundation, Geoph~sics Program; New

York State Ener~~ and Resources Development Authorit~; and

the New Yor~. State Science Service.

Data from stations operated by the Consolidated Edison

Compan~ of New York and Weston Geoph~sical Research. Inc.,

are routinel~ provided to NEUSSN when available. Epicentral

data for some of the events in Canada near theand station

u.s. border are provided by the Earth Physics Branch, Dept.

of Ener~~. Mines and Resources. Ottawa.

In addition to the above operational support, eouipment

has been provided b~ ~he Advanced Research Projects A~enc"",of defense and b~ the Office of Envi ror.mentalot the Dept.

GeoloSw of the U.S. GeoloSical Surve~.

P...3

INTRODUCTION

results 'tor theStation operations and seismicitw

Quarter are summarized in thr.. fi.ures and five tables (the

the sectionforlflats of the tables describedare in

EXPLANATION OF TABLES).

is a ~eo~raphic map of NEUSSN stations whichFigure 1

were operational durin. the reporting period; Fisures 2 and

of seismicitw for the reportin~ period and for3 are maps

respectivelw, inthe cumulative period froM October 1975,

felt are shown by redwhich those earthQuakes t.hat. were

s~Wlbols.

stations'Table 1 is location list of operatin.a

chronolo.ical list of epicenters durin. theTable 2 is .arrival times,reporting periodP Tabl. 3 lists station

azimuths, a~plitudes, and periods tor the eventsdistances.

aftershocks. andTable 4 li.t. fore_hocks.in Table 2;

period;the reportin.microear~hGuakes occurrin. durin.

Table 5 lis~s even~s ~ha~ could no~ be defini~elw iden~ifi.d

or that did not produce a sufficientea rtholJalc.esbein~as

nlJmber of arrivals to obtain an acceptable solution.

Pa~e 4

SEISMICITY

Durin~ the period October - December 1979, a total of e

ea rthouatc.es detectedwere and located in the northeastern

United States. In addition. 11 earthoual<.es includedare

which had epicenters in Canada but within 100were

\I;.i lometers of the u.s. border. Table 4 includes 11

toreshocks, aftershocl<.s, and microearthoua~.es, and Table 5

1 ists 5 suspected earthouak.es.

The magnitudes of the 19 earthoua~.es in Table 2 range

from 1.2 to 2.6. The magnitudes of the events in' Table 4 are

less than 1 except for the aftershock associated with the

Mt . K i sco, NY ea rtholJake .

Pase 5

EXPLANATION OF TABLES

Table 1: List o~ Operating Seismic Stations.

1. Station code.

2. Station latitlJde, de~rees north.

3. Stat i on IonS i tlJde, des rees west.

4. Station elevation, meters.

5. Geosraphic location.

6. Network operator.

Table 2: Epicenter List.

1. Event date, ori~in time(UTC), ~eo~raphic name, andfelt data.

2. Epicenter determined by:WES-Weston ObservatoryLDO-Lamont-Dohert~ Geolo~ical ObservatorwEPB-Earth Ph~sics Branch. Ottawa.

3. Origin time(UTC).

4. Event latitude, degrees.

5. Event lon~itude, de~rees.

6. Event depth, kilometers. Depths of 0 km(U.S.) and0 ~.m or 18 ~,m (Canada) are restrained values.

7. RHS error(sec) o~ least-sQuares location.

8. 95X confidence ellipse data: semi-major azimuth,and lensths(~,m) of semi-major and -minor a~<es.

9. Event ma~nitude:Mn-Nuttli L~ ma~nitudeMc-Coda duration ma~nitude(WES).

Table 3: Event data list

1. Event date, origin time(UTC), seoSraphic name, andfelt data.

2. Station code.

P..-e 6

3. Emersent(e) or impulsive(i);phase t~pe(P,Ps,P*,Pn,S,Ss,S*,Sn).If impulsive, direction of first motion is alsoincluded: compression(c) or dilatation(d).

4. Station arrival time(UTC).

5. Epicentral distance, ~.m.

6. Station azimuth, des.

7. Peak-to-peak sround motion, in millimicrons, of themaximum env@lope amplitude of vertical-componentsiSnal, corrected for swstem response.

8. Period, in sec, o~ the siSnal ~rom which theamplitude was measured.

9. Hn as calculated fro~ amplitude, period, anddistance.

10. Hc=2.23Los(D)+0.12Los(k)-2.36, where D is thecoda duration, in sec, and k is the epicentraldistance, in kit.

Table 4: Foreshocks. Aftershocks. and Microearthouakes.

1. Event date. ori.in time(~TC). nearest recordin.station. ma.nitude. and .eo.raphic re.ion.

Table 5: Suspected and Poorlw-Located EarthQuakes.

The format for this table is a combination of those forTables 2 and 3.

PaSe 7

APPENDIXVELOCITY MODELS USED FOR EPICENTER LOCATIONS

IN THE NORTHEASTERN UNITED STATES

VEL To!I:.m/sec sec

---

DEPTHIt.. 1ftREGION

Northern New York andAdirondacks(LDO)

6.16.68.1

0.00.56.3

0.04.0

35.0

Attica, New York(lDO) 4.55.06.0

0.00.21.4

0.01.06.0

Blue Htn. lake, New York(lDO) 5.9 0.0 0.0

5.986.628.1

0.01.06.5

0.07.0

35.0

SolJtheas te rn NY andnorthern New Jerse~(Lr

New En~land(WES) 5.316.066.598.10

0.0 0.00.16 0.881.78 13.096.72 34.60

0a>v

0to-V

0VV

00V

0CDV

0It)V

0rt)V

0(\IV

00)..->

0CO~

0

V-":it. ?:

0V<D

~ ~;:~~...;..

~\ 6:~

0~ ~

~~

~ ""'" ~

~-,.\ ~

0CDto .

..,..

0

0r- ~

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t.-' ,}

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0

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---c

~0

0a> 1? --.

_0.-

Figure 1.

0CDV

0,...V

00V

0(0V

0VV

0I/)V

~v

0(\Jq-

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0CX)~

0-V

.-:;.. ~I~~0

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0 ~~-

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CD./.I=Q)>

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./.I

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rz..

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<Dto-

0

,..

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-- ~0 v --. ~

~

Figure 2. Earthquake epicenters during periodOctober - December. 1919.

0a)V

00V

0, V

0(0V

0

VV

0mrt)

0Q)~

010V

0~V

0(\JV

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toU)

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0

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<Dr-

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Figure 3. Earthquake epicenters during the period October 1975December. 1979.

TABLE 1

LIST OF OPERATING SEISMIC STATIONS BY STATEOCTOBER - DECEMBER 1979

STAID

LATITUDE LONGITUDE ELEVATIONdegrees degrees meters OPERATOR

CANADA,STATIONS USED FOR LOCATIONS IN THIS BULLETIN

LHQPOC

47.5484N47.3600N

70.3267W70.0400W

41961

LA HALBAIE,PGLA POCATIERE,PG

EPBEPB

CONNECTICUT

B

EI

H

"""""NU

41.4933N41.8346N41.4857N41.5529N41.5314N41.5066N41.5023N41.4551N41.4807N~1.8317N

73.3839W73.4113W72.5232W72.4667W72.4337W72.4715W72.5121W72.4950W71.8516W72.2505W

69342

2411361

152106101110149

BROOKFIELD,CT WESELLSWORTH,CT WESHADDAH,CT WESHOODUS (COHSTOCK BRIDGE) WESHOODUS (PICKEREL LAKE),C WESHOODUS (CAVE HILL),CT WESHOODUS (HADDAH NECK),CT WESHOODUS (SHAILERVILLE),CT WESN STONINGTON,CT WESSTORRS,CT WES

DELAWARE

BBDGTDNED

39.3461N38.7414N39.7042N

75.6767W75.4144W75.7082W

181546

BLACKBIRD,DEGEORGETOWN, DENEWARK,DE

DGSDGSDGS

MAINE

AGMBPMCBMD1AD2AD3AD4AD5AD6AEMMHKMHNMEJKMMIMPOOPOlTRM

47.0817N44.6317N46.9325N47.0586N47.1304N47.0876N47.1881N47.0113N47.0890N44.7392N44.6564N46.1599N45.6555N45.2436N44.9863N44.9035N44.2597N

69.0233W68.7893W68.1208W69.0989W69.1524W69.1687W69.2767W69.2650W69.4957W67.4894W69.6408W67.9867W70.2426W69.0403W67.4674W67.3271W70.2551W

24080

250304402259490365430

2079

209378140219

93113

ALLAGASH,HE WESBUCKSPORT,HE WESCARIBOU,HE WESDICKEY,HE WESDICKEY(KELLY HTN),HE WESDICKEY(CARTER BROOK),HE WESDICKEY(ROCKY HTN),HE WESDICKEY(BROWNS BROOK),HE WESDICKEY(TWO HILE STREAH), WESEAST MACHIAS,HE WESHINCKLEY,HE WESHOULTON,HE WESJACKHAN,HE WESHILO,HE WESCOOPER HILL,HE WESEAST RIDGE,HE WESTURNER,HE WES

MASSACHUSETTS

COD 41.6856N 70.1350W -85 CAPE COD,HA HIT

cCDDDDDDSC

TTH12345CT

TABLE 1 Continued PAGE 2 OF 3

DFGHLQWW

42.0686N41.7167N42.6403N42.5064N42.3389N42.4566N42.3847N42.6106N

70.7678W71.1215W70.7272W71.5583W73.2724W72.3738W71.3221W71.4906W

275215

180345201

6087

HITWESHITHITWESWESWESHIT

DUXBURY,HAFALL RIVER,HAGLOUCESTER,HAHARVARD,HALENOX,HAQUABBIN ,HAWESTON,HAWESTFORD,HA

NEW HAMPSHIRE

BNHDNHHNHONHPNHWNH

44.S906N43.122SN43.70S3N43.2792N43.0942N43.8683N

71.2564W70.8948W72.2856W71.5055W72.1358W71.3997W

47224

180280659220

BERLIN,NHDURHAH,NHHANOVER,NHOAKHILL,NHPITCHER HTN,NHWHITEFACE,NH

WESHITWESHITHITHIT

NEW JERSEY

GHTNGPDLVNJOGDpaNPRINRAHA

40.8825N41.0177N40.8095N41.0667N41.0073N40.3668N41.0952N

74.1845W 16574.4608W 36074.7515W 20174.6166W -36375.0858W 22974.7178W 11074.2140W 247

GARRET HOUNTAIN,NJGREEN POND,NJLONG VALLEY,NJOGDENSBURG,NJPAHAQUARRY,NJPRINCETON,NJRAHAPO,NJ

LDOLDOLDOLDOLDOLDOLDO

NEW YORK

AlXAPHBGRBINGBlMCANYClINClYCRaGCTRDANYDBMDHNDNYDPlEGNGOBGSCIPSAMNHMEDYMSNYOCNOSBPAL

44.3225N43.8413N44.8288N42.0757N41.3297N42.9255N41.8750N43.8513N43.9050N43.8741N44.7583N41.2944N42.8255N

O.OOOON41.2528N43.8596N41.3294N41.2661N41.2672N40.7808N43.1818N44.9983N43.8848N41.3603N41.0042N

75.9280W74.4970W74.3742W75.9767W73.9550W78.8528W73.8490W74.4490W75.4125W74.4600W73.8357W73.9750W78.1930W78.1688W73.9108W74.4818W73.9219W74.0039W73.9483W73.9738W78.3903W74.8620W74.5293W73.9239W73.9091W

122564329408134192168579244585507

27491381

67549150110

00

18655

701212

91

ALEXANDER BAY,NYAIRPORT HANGAR,NYBANGOR,NYBINGHAHTON,NYBLUH,NYCANISUS,NYCLINTON,NYCRYSTAL LAKE,NYCROGHAN,NYCASTLE ROCK,NYDANNEHORA,NYDUNDERBURG HTN,NYDOYLE HILL,NYDERSAH,NYDELLI PAOLI,NYEAGLES NEST,NYGOBBELET,NYGIRL SCOUT CAHP,NY

LDLDLDLDCOLDLDLDLDLDLDCOLDLDCOLDCOCOCOLDLDLDLDCOLD

HANHATTAN,NYHEDINA,NYHASSENA,NYOVER CASTLE ROCK,NYOSBORN,NYPALISADES,NY

ULLRNUEF

XR0VXASH

0000N*000000N*00N*0N*N*N*0000N*0

TABLE 1 Continued PAGE 3 OF ;3

PNYPTNSANYSNPSPSSRHSTLTBRUWLWGLWNDWHYWPNYWPRWVLY

44.8341N44.5725N43.1738N41.2408N41.3019N41.2283N41.1886N41.1417N43.8378N41.3589N42.3375N44.3910N41.8030N41.2546N42.4708N

73.5550W74.9828W78.8703W73.9711W73.8905W74.0139W74.0036W74.2222W74.S433W73.8994W74.152SW73.8595W73.9707W73.5856W78.5683W

121

11125165

16

lDOlDOlDOCON*CON*CON*CON*lDOlDOCON*lDOlDOlDOlDOlDO

PLATTSBURG,NYPOTSDAH,NYSANBORN,NYSTONEY PT,NYST PETERS SCHOOL,NYSCHERHAN,NYSTILES,NYTABLE ROCK,NYUTOWANA LAKE,NYWEGEL,NYWINDHAH,NYWILHINGTON,NYWESTPARK,NYWARD POUND RIDGE,NYWEST VALLEY,NY

PENNSYLVANIA

BVRERIHVLPHISCP

40.7000N42'. 1333N

39.9992N40.1166N40.7950N

80.3333W79.9833W76.3506W75.1333W77.8650W

0000

352

BEAVER,PAERIE,PAHILLERSVILLE,PAABINGTON,PASTATE COLLEGE,PA

PSUPSUHSCPSUPSU

VERMONT

BCDFIt1t1t1t1

43.3488N44.5777N44.9620N44.7228N43.5221N42.8383N43.9991N44.9136N44.2783N

72.5853W73.1458W72.1709W72.9517W73.0533W72.8008W73.1811W72.6278W72.6067W

30085

370366295580134262240

BAlTIHORE,VTCOlCHESTER,VTDERBY,VTFlETCHER,VTIRA,VTHARlBORO,VTHIDDlEBURY,VTHONTGOHERY,VTHONTPElIER,VT

WESlDOWESlDOWESlDOlDOlDOlDO

* STATION CODES NOT ALL CLEARED THROUGH NEIC

OPERATOR CODE

CON - CONSOLIDATED EDISON,INDIAN POINT,NYDGS - DELAWARE GEOLOGICAL SURVEYEPB - EARTH PHYSICS BRANCH,DEPT.OF ENERGY,MINES,AND RESOURCES,CANADALDO - LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITYMIT - HASSACHUSETTS INSTITUTE OF TECHNOLOGYHSC - HILLERSVILLE STATE COLLEGEPSU - PENNSYLVANIA STATE UNIVERSITYWES - WESTON OBSERVATORY, BOSTON COLLEGE

73736:6'2'66509750

782085511228620

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TABLE 3

EARTHQUAKE DATA LISTNORTHEASTERN UNITED STATES AND ADJACENT REGIONS

OCTOBER - DECEMBER1979

STA PHASE--- MAGNITUDEARRIVAL DIST AZ AMP PERIOD

19790CTOl1950 NY,POUGHKEEPSIECLIN eP 19 50 20.6 26kmCLIN eS 19 50 24.1 26kmTBR eP 19 50 26.0 62kmRAHA ePs 19 50 26.7 66k.wlRAHA eSs 19 50 34.9 66k.mPAL ePs 19 50 27.7 71k.mGPD ePs 19 50 29.8 83k.mGPD eSs 19 50 39.3 83km

14d~14ds

204d~202d~202ds179dS213dS213d~

19790CT030506 PG,LA MALBAIELHG ePs 05 06 46.0 22k.mLHG eSs OS 06 48.5 22kmPOC ePs 05 06 47.6 33kmPOC eSs 05 06 50. 9 33~,mD2A ePs 05 07 00.4 104kmD2A eSs 05 07 12.8 104kmD3A ePs 05 07 00.2 104kmD3A eSs 05 07 12.7 104kmD1A ePs 05 07 00.7 110kmD1A eSs OS 07 14.2 110kmCDH ePs 05 07 12.8 185kmCDM eSs 05 07 34.2 185kmJKM eSs 05 07 36.8 192km

30309393

105105108108108108105105175

2.69Hc

lmlJ 0.1sec 1.75Hn 2.S9Hc

19790CT12 0850 PO,LA MALBAIELMO epg 08 50 53. 5 18~.mLMQ egg 08 50 55.5 18~.mPOt eSS 08 50 56.0 20kmCBM eP* 08 51 16.7 163~.mCBM eS* 08 51 36.1 163~.m

276ds276ds170dS113ds113dS

2mlJ O.1sec 1.84Mn 1.73Hc

19790CT151343 PQ,LA MALBAIEPOC eSs 13 43 46.0 16"..'"LMQ ePS 13 43 44.5 18k",LMQ eSS 13 43 46.7 1.81<.'"D3A ePS 13 43 55.5 841<.'"D3A eSS 13 44 06.0 841<.'"AGM epg 13 43 56.8 941<.'"AGM eSS 13 44 07.7 94k",CBM eS* 13 44 27.2 1631<.'"

163d.-289d.-289d.-122d~122d.-119d.-119d.-112d.-

1.97"c

2 In IJ O.2sec 1.67Hn

dsdsdsdsdsdsdsdsdsdsdsdsds

2 of 5TABLE 3 (Continued) Pase

MAGNITUDESTA PHASE--- ARRIVAL DIST AZ AMP PERIOD

19790CT291644 ON,HILTONSANY eP~ 16 45 04.5 10111;.111SANY eS~ 16 45 16.8 101klllHEDYeP* 16 45 10.2 135klllHEDYeS* 16 45 26.3 135klllDHN eP* 16 45 15.2 1681<.111DHN eSt 16 45 35.4 16811;.111

122122113113123123

1979NOVO12108 PG,LA MALBAIELMG ePS 21 09 05.8 41k.mLMG eSS 21 09 11.5 41k.mD3A ePS 21 09 14.4 90k.mD3A eSS 21 09 25.1 90kmD1A ePS 21 09 15.4 96k.mD1A eSS 21 09 26.9 96k.nl

238d~238d~144d~144d~143d~143d.-

2.03Hc

1979NOV080113 NY,BLUE MOUNTAIN LAKEEGN eP 01 13 17.1 3~.m 148dsEGN eS 01 13 17.9 3km 148dsCTR eP 01 13 17.3 3km 101dsCTR eS 01 13 17.5 3km 101dSAPH eP 01 13 17.4 41<.m 178dsAPH eS 01 13 17.8 4km 178dsCLY eP 01 13 17.6 5km 128dsCLY eS 01 13 18.1 5km 128dsUWL eP 01 13 17.9 61<.m 218dsUWL eS 01 13 18.3 6km 218dS

1979NOV13 0027 HE,SE OF CANTONHKH eP. 00 28 03. 0 62~..HKH eS. 00 28 11. 5 62~.mBPH eS* 00 28 29.2 125kmHIH eP* 00 28 15.5 139kmHIH eS* 00 28 31.9 139~.mJKH eP* 00 28 16. 6 141~,mPQO ePn 00 28 28.6 237kmHNHE e** 00 28 33.7 269km

61ds61d~77d~47d~47d~

3d~73d~42ds

2.04Hc2.11HcO.1sec 2.11Hn41T1IJ

2.25t1c

1979NOV14 0514 PQ,SW OF LA POCATIEREPOC eP~ 05 14 48.1 21k~ 54d~POC eS~ 05 14 50.1 21km 54d~LMQ eP~ 05 14 49.5 34km 352d~LMQ eSS 05 14 53.0 34km 352dSD1A eP~ 05 14 59.5 91~.m 103d~D1A eSS 05 15 10.5 91km 103d~CBM eP* 05 15 11.2 167km 102dsCBM eS* 05 15 29.5 167k~ 102dSHNME eSS 05 15 44. 2 212~.m 124ds

2.01Hc

2.23Hc

2.08Hc

d~d.cJ

d~

d~

d~

d~

TABLE 3 (Continued) 3 of 5Pa~e

STA PHASE--- ARRIVAL DIST AZ AMP PERIOD MAGNITUDE

1979NOV171712 PQ,LA MALBAIEPOC eS. 17 12 30.0 30kmLMQ eP. 17 12 26.7 32~.mD1A eP. 17 12 35.8 87kmD1A eS. 17 12 46.5 87kmCBM eP* 17 12 46.8 155~.mCBM eS* 17 13 04.8 155km

200d.258d~135d~135d.-119d~119d~

2.06t1c

2.13Hc

1979NOV20 0617 HA,QUINCYWES eSS 06 17 41.5 30kmFLR ePS 06 17 42. 3 56~.mFLR eSS 06 17 48.9 56knlOCT ePS 06 17 50.8 109~.mOCT eSS 06 18 03.7 109kmHD2 eP* 06 17 55.5 138kmHD2 eS* 06 18 12.9 138~.m

309d.-187d.-187d.-247d.-247d.-237d.-237d.-

13mu O.lsec 2.31Hn 1.48Hc

emu O.2sec 2.06Hn 1.73Hc

1.91"c

1979NOV29 0258 NY,BLUE MOUNTAIN LAKEAPH eP 02 58 45.4 6km 352d.CL Y eP 02 58 45. 4 7~.m 25d.WNY eP~ 02 58 57.4 83km 37d.WNY eS~ 02 59 07.7 83km 37d.PTN eP. 02 58 59. 4 95~.m 336d~MDV eP. 02 59 01.5 108km 77d.PNY eP. 02 59 05.7 138km 32d.

1979NOV30 1057 PQ,LA MALBAIELMQ eP~ 10 57 49.3 18kmLHQ eS~ 10 57 52.0 18kmPOC eP~ 10 57 52.0 35kmPOC eS~ 10 57 56.5 35klflD3A eP~ 10 58 02.5 98!1:.mD1A eP~ 10 58 03.8 104kmCBH eP* 10 58 14. 6 174~~m

226d~226d~166d~166d~130d~130d~117d~

1.87Hc

O.2sec3mu 1.76Hn

1979DEC011614 NY,PINE ISLANDTBR eP~ 16 14 11.1 26kmRAHA eP~ 16 14 12.0 31kmDBH eP~ 16 14 12.0 33kmGPD eP~ 16 14 13.1 38kmPAL eP~ 16 14 15.8 54k~WPR eP~ 16 14 17.7 66~.~LVNJ eP~ 16 14 18.3 68~.mCLIN eP~ 16 14 18.8 73kmBCT eP~ 16 14 20.8 84~.mBCT eS~ 16 14 31.4 84kmLNX eP* 16 14 30.5 143kmLNX eS* 16 14 47.1 1431<.rrl

152d~156d~100d~192d~135d~

99d~209d~

36d~79d~79d.39d.39d.

1.72Mc

54 ofPs~eTABLE 3 (Continued)

MAGNITUDE'

PERIODSTA PHASE--- ARRIVAL DIBT AZ AMP

1979DEC12 0834 CT,SOUTHEAST OF NORWICHHD2 eP~ 08 34 28.5 37km 285d~HDH eP~ 08 34 29.5 44km 27od~HDH eS~ 08 34 34.5 44km 276d~UCT eP~ 08 34 30.2 47km 335d~UCT eS~ 08 34 35.8 47km 335d~FLR eP~ 08 34 35. 2 80~,m 68d~BCT eP~ 08 34 41.1 115km 273d~

1.32Hc1.22Hc

1.07Hc

1979DEC231944 NB,HAHPSTEADPOi epg 19 44 36.6 115~.mPOi eSg 19 44 50.8 115~.mPOO epg 19 44 36.9 118kn.POO eSg 19 44 51.5 118kmEHH eP* 19 44 40.2 137kmEHH eS* 19 44 56.5 137kmHNHE eSg 19 45 01.0 151km

2.36Hc229ds229d~236d.236ds227d.227dS296ds

2.31Hc

2.29t1c2.24Hn26mu O.5sec

1979DEC291858 PQ,LA HALBAIELHQ eP~ 18 58 51.2 3 011:. mLHQ eS~ 18 58 55.5 30t<.mPOC eP~ 18 58 51.3 32kmPOC eS~ 18 58 55.5 32kmD6A eP~ 18 58 57.9 70kmD4A eP~ 18 58 58.4 71kmD2A eP~ 18 59 00.5 83kmD3A eP~ 18 59 00.1 85kmD5A eP. 18 59 01.2 87kmD5A eS~ 18 59 11.4 8711:.mD1A eP~ 18 59 01.3 91kmHNHE ePn 18 59 19.8 222t<.m

251d~251d~193d~193d~151d~135d~133d~136d~143d~143d~135d~137d~

2.14Hc2.17Hc

2.0511<:

2.28Hc2.66Hc2.14Hn4mu O.2sec

1979DEC30 1119 NB,NE OF UTOPIAPOl ePs 11 19 12.6 59kmPOO iPsO 11 19 13.5 65kmEMM iPsO 11 19 15.8 80~.mEMM eSs 11 19 25.9 80~.mHNME eP* 11 19 27. 3 148~.mHNME eS* 11 19 44.5 148kmBPM ePn 11 19 31.2 177kmMIM ePn 11 19 31.7 184~.m

2.78Hc238d~250d~232d~232d~318d~318d~250d~273d~

2.49Hc2.30HnO.1sec9mu

2.53Hc1.93Hn41Y11J O.2sec

2.45Hc2.54Hc2.02HnO.2sec4R\IJ

INT III37d.

302d.229d.293d.280d.288d.304d.323d.296d.

1979DEC30 1415 NY,HT KISCOWPR ePS 14 15 15.0 15kmDPL ePS 14 15 15.6 22kmPAL ePS 14 15 16.3 25kmSNP ePS 14 15 16. 3 26~.mSTL ePS 14 15 16.5 27kmSRH ePS 14 15 16.7 29kmDB" ePS 14 15 16.8 29kmWGL ePs 14 15 16.9 29kmGSC ePS 14 15 16.9 29km

Cont.inued

5 of 5TABLE 3 (Continued) Pa.e

PERIOD MAGNITUDESTA PHASE--- ARRIVAL DIST AZ AMP

BLH ePSOSB ePSRAHA ePSTBR ePsBCT eP~AHNH ePsGPD ePSWPNYePsCLIN eftSHDH ePSHD4 ePSHD3 ePSHD2 eP*paN eP*UCT eP*WES e**APH ePnHNH e**

14 15 16.914 15 17.114 15 19.514 15 19.514 15 19.414 15 19.814 15 22.814 15 24.614 15 25.214 15 28.814 15 29.214 15 29.714 15 30.414 15 30.814 15 34.6

30klfl311<.'"441<.m451<.m46!t;.m471<.m66km761<.m82k",

105km1061<.'"110km114km118km142k",240km306!t;.",307km

312d.320d.26~d.269d.

34d.210d.258d.342d.351d.

69d.68d.68d.68d.

263d.57d.54d.

348ds22ds

2.46Mc

2.61Hc2.42Hc2.42Hc2.42Hc

2.52Hc2.26Hc

14 15 56.22.55Hc

TABLE 4

FORESHOCKS. AFTERSHOCKS. AND MICRO-EARTHQUAKES

DATE ARRIVAL-TIME STATION MAGNITUDE LOCATION

OCT18OCT19OCT19OCT23OCT28NOVO8NOV15DECO1DEC11DEC12DEC30

105805212339045732.10010113071123.074010211752141923.

BMLBMLBMLJt<MBMLBMLUCTBMLBMLBMLBCT

BLUE MOUNTAIN LAKE,NYBLUE MOUNTAIN LAKE,NYBLUE MOUNTAIN LAKE,NY

JACKMAN,MEBLUE MOUNTAIN LAKE,NYBLUE MOUNTAIN LAKE,NY

DANIELSON,CTBLUE MOUNTAIN LAKE,NYBLUE MOUNTAIN LAKE,NYBLUE MOUNTAIN LAKE,NY

MT. KISCO,NY

TABLE 5

SUSF'ECTED AND F'OORL Y LOCATED EARTHQUAKESNORTHEASTERN UNITED STATES AND AD,JACENT REGIONS

OCTOBER - DECEMBER

1979

197(1OCT04 1543 F'Q, SOUTH OF CABANO" *WES 15 43 08 47.5N 68.9W OR 0.03 103 26 8.1 1.0Mc

A(3M eF's 15 43 15.6 45"-.1T1 195ds O. 64McAGM eSs 15 43 21.1. 45"-.m 195ds

':1 D3A eF's 15 43 16.1 48 "-. ITI 208ds 1. 39McD3A eSS 15 43 22. 1 48 "-. ITI 208ds

19'790CT30 2251. F'Q, NEAR SUI_L Y*WES 22 51 48 47.5N 69.4W OR 0.44 83 25 1.8 0.8Mc

D2A eF'S 22 51. 56.6 48"-.ITI 160dsD2A eSS 22 52 02.8 48"-.m 160dsD6A eF's 22 51 56.6 51"-.1T1 191ds 0.83McD6A eSS 22 52 02.9 51"-.ITI 191dsD1A eF's 22 51 5'7.4 57 "-.ITI 159dsD1A eSs 22 52 04.1. 57"-.1T1 159ds

1. 9'79DECO:3 ~~009 NB, F'ASSAMAQlJODDY BAY*WES 20 09 23 45.0N 67.0W OR 0.19 99 20 11.8 1.6Mc

F'Q1. iF'sC 20 09 28.1 28"-.1T1 247ds 11ITIIJ O.lsec 1.60McF'Q1. eSs 20 09 31.7 28"-.1T1 24'7dsF'QO iF'sC 20 09 29.3 37"-.1T1 267ds 7 ITI IJ O. 1secF't~O eSS :-!O 09 33.9 :57"-.ITI 267dsEMM eSS 20 09 37.1 49"-.1T1 233ds

1979DEC040154 ON,SW OF TORONTO*WES 01 54 56 43.4N 79.6W OR 0.65 84 29 22*I_DO 01 55 08 43.2N 78.9W 5.0 3.4

SANY eF's 01 55 05.6 63"-.1T1 112ds!3ANY eSs 01. 55 14.5 63"-.1T1 112dSMEDY eF's 01 55 12.0 100"-.ITI 103dsME:DY eSs OJ. 55 24.8 100"-.1T1 103dsDI-IN eF'* OJ. 55 18.4 130"-.1T1 118dsDHN eS* 01 55 32.4 130"-.1T1 118dsWVL Y eS* 01 55 33.5 132"-.m 140ds

j. 979DEC 11. 2004 NY, LOCKF'ORTJo *I_DO 20 04 09 4:'~.2N 78.9W 5 0.39

SANY eF' 20 04 10.1 8"-.ITI 190dsCANY eF' 20 04 16.1 :35k.1T1 180ds

J ME:DY eF' :"1;0 04 15.7 38"-.1T1 100dSDHN eF's 20 04 20.9 71k.1T1 13j.ds

;3;~-

DISTRIBUTION

No. Recipient-- ~

30 Dr. Jerr~ HarbolJr, Chief, Site Safet~ Research~ Brarlch, Nllclear ReslJlator~ Commissiorl

30 Dr. F'al_ll W. F'o\Tlero~, Coordirlator NEUSSN

5 Dr. M. Nafi Tol<.soz, MassachlJsetts IrlstitlJte ofTechrloloS~

5 Dr. Yash P. ASSarwal, Lamorlt-Dohert~ GeoloSicalObservator~

5 Dr. Shelton S. Ale~.'arlder, F'erlrls~lvarlia StateLJniversit~

5 Mr. Kerl WoodrlJff, Delaware GeoloSical SIJrve~

5 Earth F'h~sics Branch, Carlada

1 Consol idated Edison of New YorI<o

1 Westorl Observator~ Librar~

1 File

:;.

N Westorl Observator~, Bostorl Collese

"

~