ABSTRACT
This
report
in
seis..icitw
April
-
network
th~
included
and all
~
event
velocit~
States.
the
1981.
the
twent~-third
northeastern
ouarterlw
United
are
Included
and seismicitv
stations
cumulative
Also
the
June
is
tor
$ei$.icit~
are
data
models
tables
tor
the
~eo~raphic
durins
the
o~ station
~uarter.
appropriate
States
for
tor
the
period
ot
maps
the Quarter.
the
and ot
Quarters.
twentw-t.hree
locations,
ot
bullet-in
epicenters,
An
Append i >:
the
northeastern
describes
United
PaS. 2
ACKNOWLEDGMENTS
Partial
ot
operation
is
or ~ull
the
sraterullw
members
O~~ice
Science
State
the
A~encies
Ener~Y
Science
s~a~ions
New York
and
are
routinelw
provided
to
and
station
da~a
some of
u.s.
border
ot
Ener~~,
In
has
been
ot
t,he
are
provided
Hines
to
provided
Dept,.
GeoloS~ of
the
bw the
of
Defense
the U.S.
u.s.
the
the
Studies;
the
Program;
New
Authoritw'
bw ~he Consolida~ed
Weston
Geoph~sical
and
~he even~s
b~ the
above
Earth
Research
and bw the
Canada
Office
Survew.
near
Branch,
~he
Dept
Canada.
operational
Advanced
GeoloSical
in
Inc.,
Epicent.ral
Ph~sics
Ottawa,
Edison
Research,
NEUSSN when available.
and Resources,
addition
Regulator!='
Research;
Develop.ent
opera~ed
for
to
Service.
ot
Camp an!='
Nuclear
Geoph~sics
the
support
Eartnouake
and Resources
New Yor~. State
Da~a ~rom
ot
tor
Network(NEUSSN)
providin~
Satet~
Of"fice
Foundation,
asencies
u.s.
the
o~ Reactor
Survew,
GeoloSical
various
u.s. Seis.ic
Northeastern
NEUSSN include
of'
National
fro.
acknowledged.
Commission.
Yor",
support
support,
Projects
of
eauipaent
ASenc!:I
Environ_ental
Page 3
INTRODUCTION
station
Quarter
are
summarized
of
formats
and
operations
the
in
fisures
and five
are
described
in
a geo~raphic
aap of
tables
three
for
results
seis...icit!:l
tables
the
section
EXPLANATION OF TABLES).
Fisure
were
3
operational
are
the
is
1
maps
durins
of
cumulative
seis.icitw
period
tho.e
which
the
reportins
for
fro.
the
reporting
were
that
period
1975,
which
Figures
period;
October
earthGuakes
NEUSSN stations
2 and
and for
in
respectivelw,
~elt
are
shown
by
red
s~..bols.
Table
Table
2
reportin~
1 is
azimuths,
Table
as
5 lists
bein~
number
of
3
..
events
that
earthQuakes
to
of
operatinS
epicenters
and periods
~or
durins
the
times,
the
events
period;
report-ins
not
be definitelw
that
did
not
an acceptable
the
a'ft.ershocks,
could
obtain
durins
arrival
foreshocks.
or
stations;
station
lists
lists
occurrins
arrivals
list
amplitudes,
Table
2;
microearthQuakes
Table
Table
ot
list.
chronoloSical
period;
distances,
in
a
is
location
a
produce
identified
a sufficient
solution.
PaSe -4
SEISMICITY
During
the
were
earthQuakes
United
States,
events
border.
The magnitudes
less
than
South
of
Halifa>:,
cumculative
throush
Figure
for
errors
were
3 is
These
the
correct
a..,i
13
the
in
have
cu.ulative
3)
Table
found
recent.lw
published
been
the
and
removed
seismicit~
aicro-
2
ranse
in Table
4 are
Table
associated
in
7
earthaua~.es.
of the events
event
Canada.
at
rs
a1't,ershOCKS
aftershoc~,s
12
addit.ion,
in
1 omete
10
of'
northeastern
In
7 suspected
(Fisure
errors
in
22 earthoua~.es
Nova Scotia
seismicit~
19.
100
5 lists
the
located
total
a
had epicenters
The magnitudes
1 e>:cept
Some
which
o~ the
1981,
New Jerse~.
includes
and Table
1.4 to 3.9.
2 in
within
4
June
and
included
were
from
-
detected
Table
earthQuakes,
April
includins
are
earthQuakes
o~ these
period
with
5
in
in
the
map
of'
15
bulletins
and the
map.
present
PaSe 5
EXPLANATION OF TABLES
Table
Table
1:
List
o~ OperatinS
Seismic
1.
Station
code.
2.
Station
latitude.
3.
S~a~ion
lonsi~ude,
degrees
4.
Station
elevation,
.eters.
S.
GeoSraphic
6.
Network
2:
degrees
Stations.
north.
wes~.
location.
operator.
Epicenter
List.
1.
Event date,
felt
data.
oriSin
2.
Epicenter
deterMined
bw:
WES-Weston Observatorw
LDO-Lamont-Dohertw
Geolosical
Observatorw
EPB-Earth
Phwsics
Branch,
Ottawa,
Canada
CON-Consolidated
Edison
Co.
of New Vor"-
HIT-Hassachusetts
3.
Origin
4.
Event
latitude.
5.
Event
longitude.
ti.e(UTC),
Institute
Seosraphic
of
name,
Technolosw
time(UTC).
de.rees.
degrees.
6. Even~ dep~h, ~.ilome~ers.
Dep~hs o~ 0 ~..(U.S.)
0 k. or 18 km(Canada) are res~rained
values.
7.
RHS error(sec)
8.95%
confidence
and lensths(km)
9.
and
o~ 1.as~-sauares
ellipse
data:
of semi-aaJor
Event ma~nitude:
Hn-NuttIi
La .a~nitude
Hc-Coda duration
.a~nitude(WES)
HI-Richter
Ls ma~nitude
(LDO,
loca~ion.
semi-major
and -minor
EPB).
azimuth,
axes.
and
F'aSe
Table
3:
list.
Event date,
felt
data.
2.
Station
3.
Emersent(e)
or impulsive(i)i
phase twpe(P,Ps,P*,Pn,S,Ss,S*,Sn).
If impulsive,
direction
of first
motion
included:
compression(C)
or dilatation(D).
orisin
time(UTC),
~eo~raphic
name,
5.
Epicentral
6.
S~8~ion
7.
Pea~,-to-pea~,
ground
motion,
in millimicrons,
ma>:imum envelope
a18plitude
of vertical-co.ponent
signal,
corrected
for s~stem response.
8.
Period,
amplitude
9.
Hn and HI as calculated
and distance.
5:
arrival
is
Station
4:
and
code.
4.
1.
Table
data
1.
10.
Table
Event
6
ti.e(UTC).
distance.
azi.u~h,
in
also
km.
deS.
sec, of the
was measured.
si~nal
from
from
which
amplitude,
of
the
~he
period
Mc=2.23LoS(D)fO.12Los(k)-2.36,
where D is the
coda duration,
in sec, and k is the epicentr~l
distance,
in kM.
Foreshoc~,s,
Aftershocks,
Event date,
orisin
station,
.asnitude,
Suspected
The for.at
Tables
and MicroearthQuakes.
time(UTC),
nearest
recordin.
and seosraphic
region.
and Poorl",-located
for
2 and 3.
this
table
is
EarthQuakes.
a co.bination
of
those
for
PaSe 7
APPENDIX
VELOCITY MODELSUSED FOR EPICENTER LOCATIONS
IN THE NORTHEASTERNUNITED STATES
VEL
REGION
Northern
Adi
Attica,
Blue
New York
and
rondac~,$(LDO)
New York(LDO)
Mtn.
Southeastern
northern
La~,e,
New Yor~,(LDO)
NY and
New Jerse~(LDO)
New En~land(WES)
To
DEF'TH
KID/sec
sec
It.",
6.1
6.6
8.1
0.0
0.5
6.3
0.0
4.0
35.0
4.5
5.0
6.0
0.0
0.2
1.4
0.0
1.0
6.0
5.9
0.0
0.0
5.98
6.62
8.1
0.0
1.0
6.5
0.0
7.0
35.0
~jO~O
6 .06
0.0
O. 16 ~ 0 . 88-
---
6 . ~'1- ~~9
~-6
. 72l~
A
-:-60
~
0
<X)
V
0
r--
0
v
~
0
V
(0
0
0
an
q-
<D
V
0
It)
V
V
V
~
\
0
(\J
0
V
V
0
0
0
V
0
(J)
~
m
~
6
0
r'
.
0
Q)
to
c:
~
r
'/
r'.~-
0
.
.
-..
0
to-
.~
..
.,.
~.
--
; ~~\
I .
'"
..~
.
\
~
,.
~
,-
.
.
~
\.
,\
.
\
\
.
...
!
or
.
\\
1
"-
,-
/"
,
I
,
1
'
,~
",-
FIGURE 1.
Seismic
Stations
operating
APRIL
1981
.JUNE
~--.
-
durin~
the
period
.
,
FIGURE 3.
Earthaua~,e
Epicenters
OCTOBER. 1975
JUNE
during
1981
the
period
TABLE 1
LIST OF OPERATING SEISMIC STATIONS BY STATE
APRIL
-
JUNE
1981
STA
ID
LATITUDE
degrees
LONGITUDE ELEVATION
degrees
aeters
OPERATOR
CANADA,STATIONS USED FOR LOCATIONS IN THIS BULLETIN
A10
A16
A20
A'54
A'56
A60
A64
BUO
CKO
EFO
FHO
GAC
GNT
GRQ
JAQ
LDO
LHO
LPQ
HIQ
HNQ
HNT
OTT
POC
SBQ
SUD
TRQ
UNB
VDQ
WBO
47.2460N
47.4680N
47.7060N
47.4570N
47.5500N
47.6920N
47.8270N
43.3617N
45.9944N
43.0917N
45.4550N
45.7033N
46.3630N
46.6067N
53.8022N
53.8060N
47.5484N
47.3408N
46.3667N
50.5300N
45.5025N
45.3939N
47.3600N
45.3783N
46.4660N
46.2222N
4~.9500N
48.2300N
45.0003N
70.1930W
70.0100W
69.6900W
70.4130W
70.3270W
70.0930W
69.8910W
79.7450W
77.4500W
79.3117W
76.2170W
75.4783W
72.3720W
7S.8600W
7S.7211W
77.4280W
70.3267W
70.0094W
7S.9667W
68.7700W
73.6231W
75.7158W
70.0400W
71.9264W
80.9660W
74.555SW
66.6333W
77.9717W
75.2750W
BURLINGTON,ON
EFFINGHAM,ON
FITZROY HARBOUR,ON
GLEN
ALMOND,
f'g
GENTILLy,pg
LA HALBAIE,PQ
LA POCATIERE,PQ
HANAWAKI,PQ
HANICOUGAN,PQ
HONTREAL,PQ
OTTAWA,PQ
LA POCATIERE,PQ
SHERBROOK,PQ
SUDBURY,ON
FREDERICTON,NB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
EPB
CONNECTICUT
BCT
ECT
HDtt
ttDl
ttD.2
ttD3
ttD4
liDS
NSC
UCT
41.4933N
41.8346N
41.4857N
41.5529N
41.5314N
41.5066N
41.5023N
41.4551N
41.4807N
41.8317N
73.3S39W
73.4113W
72.5232W
72.4667W
72.4337W
72.4715W
72.5121W
72.4950W
71.S516W
72.2505W
69
3 42
24
1 1 :3
61
152
1,0 6
1,0 1
1 10
14 9
75.6767W
75.4144W
75.7082W
18
15
46
BROOKFIELD,CT
ELLSWORTH,CT
HADDAH,CT
HOODUS(COHSTOCKBRIDGE)
HOODUS(PICKEREL LAKE)
HOODUS(CAVE HILL),CT
HOODUS(HADDAH NECK),CT
HOODUS(SHAILERVILLE),CT
N STONINGTON,CT
STORRS,CT
WEB
WEB
WEB
WEB
WEB
WEB
WEB
WEB
WEB
WEB
BLACKBIRD,DE
GEORGETOWN,DE
NEWARK,DE
DGS
DGS
DGS
DELAWARE
BBD
GTD
NED
39.3461N
38.7414N
39.7042N
PAGE 2 OF -4
TABLE 1 Continued
MAINE
47.0817N
44.6317N
46.932SN
47.0S86N
47.1304N
47.0876N
47.1881N
47.0113N
47.0890N
44.7392N
44.6S64N
46.1599N
45.6SSSN
45.2436N
44.9863N
44.903SN
44.2S97N
AGM
DPM
CDM
D1A
D2A
D3A
D4A
DSA
D6A
EMM
HKM
.HNME
JKM
MIM
PQO
PQl
TRH
ALLAGASH,ME
BUCKSPORT,ME
CARIBOU,ME
DICKEY,ME
DICKEY(KELLY MTN),ME
DICKEY(CARTER BROOK),ME
DICKEY (ROCKY MTN),ME
DICKEY(BROWNSBROOK),ME
DICKEY(TWO MILE STREAM),
EAST MACHIAS,ME
HINCKLEY,ME
HOULTON,ME
JACKMAN,ME
MILO,ME
COOPERHILL,ME
EAST RIDGE,ME
TURNER,ME
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
WES
70.1350W
-85
70.7678W
27
71.1215W
52
70.7272W
15
71.5583W
180
73.2724W
345
70.0260W -100
72.3738W
201
71.3221W
60
71.4906W
87
CAPE COD,MA
DUXBURY,MA
FALL RIVER,MA
GLOUCESTER,MA
HARVARD,MA
LENOX,HA
NANTUCKET,HA
QUABBIN ,HA
WESTON,MA
WESTFORD,MA
HIT
HIT
WES
HIT
HIT
WES
HIT
WES
WES
H1.I
472
24
180
280
659
BERLIN,NH
DURHAH,NH
HANOVER,NH
OAKHILL,NH
PITCHER HTN,NH
WES
HIT
WES
HIT
HIT
74.1845W
165
74.4608W
360
74.7515W
201
74.6166W -363
75.0858W
229
74.7178W
110
74.2140W 247
GARRET HOUNTAIN,NJ
GREEN POND,NJ
LONG VALLEY,NJ
OGDENSBURG,NJ
PAHAQUARRY,NJ
PRINCETON,NJ
RAHAPO,NJ
LDO
LDO
LDO
LDO
LDO
LDO
LDO
75.9280W
74.4970W
74.3742W
75.9767W
ALEXANDERBAY,NY
AIRPORT HANGAR,NY
BANGOR,NY
BINGHAHTON,NY
LDO
LDO
LDO
LDO
69.0233W
68.7893W
68.
1208W
69.0989W
69.1524W
69.1687W
69.2767W
69.2650W
69.4957W
67.4894W
69.6408W
67.9867W
70.2426W
69.0403W
67.4674W
67.3271W
70.25S1W
2-40
80
250
30-4
-402
259
490
365
430
20
79
209
378
1-40
219
93
113
MASSACHUSETTS
41.6S56N
42.06S6N
41.7167N
42.6403N
42.5064N
42.33S9N
41.2950N
42.4566N
42.3S47N
42.6106N
COD
DUX
FLR
GLO
HRV
LNX
NHA
QUA
WES
WFH
HAMPSHIRE
BNH
DNH
HNH
ONH
PNH
44.S906N
43.122SN
43.70S3N
43.2792N
43.0942N
71.2564W
70.8948W
72.2856W
71.5055W
72.1358W
JERSEY
GHTN
GPD
LVNJ
OGD
PGN
PRIN
RAHA
40.SS25N
41.0177N
40.S095N
41.0667N
41.0073N
40.366SN
41.0952N
NEW YORK
ALX
APH
BGR
BING
44.3225N
43.B413N
44.B2BBN
42.0757N
122
564
329
.408
TABLE 1 Continued
BL11
CANY
CHR
CLIN
CLY
CR00
CTR
DANY
DB11
DHN
DNY
DPL
EGN
GOB
GSC
IP S
LDNY
AMNH
MASH
MEDY
HSNY
OCN
OSB
PAL
PNY
PTN
SANY
SNP
SPS
SR11
STL
TBR
UWL
WG
L
41.3297N
42.9255N
41.20S0N
41.S750N
43.S513N
43.9050N
43.S741N
44.7SS3N
41.2944N
42.S255N
42.S363N
41.252SN
43.S596N
41.3294N
41.2661N
41.2672N
40.9319N
40.7S0SN
41.0411N
43.1S1SN
44.9983N
43.SS48N
41.3603N
41.0042N
44.S341N
44.5725N
43.1738N
41.240SN
41.3019N
41.22S3N
41.1SS6N
41.1417N
43.S37SN
41.35S9N
PAGE 3 OF 4
73.9SS0W
78.8S28W
74.2211W
73.8490W
74.4490W
7S.412SW
74.4600W
73.83S7W
73.97S0W
78.1930W
78.1688W
73.9108W
74.4818W
73.9219W
74.0039W
73.9483W
73.4681W
73.9738W
72.2933W
78.3903W
74.8620W
74.S293W
73.9239W
73.9091W
73.SSS0W
74.9828W
78.8703W
73.9711W
73.890SW
74.0139W
74.0036W
74.2222W
74.S433W
73.8994W
134
192
1 S3
16B
S79
2 -44
5: S 5
S07
BLUM,NY
CANISUS,NY
CALL HOLLOWRD,NY
CLINTON,NY
CRYSTAL LAKE,NY
CROGHAN, NY
CON*
LDO
CON*
LDO
LDO
LDO
LDO
LDO
CON*
LDO
LDO
CON*
LDO
CON*
CON*
CON*
0
3
1 S6
55
70 1
2 12
91
177
23B
172
30
6
1 B
16 5
125
261
5: 6 1
152
CASTLE ROCK,NY
DANNEMORA,NY
DUNDERBURG
MTN,NY
DOYLE HILL,NY
DERSAM,NY
DELLI PAOLI,NY
EAGLES NEST,NY
GOBBELET,NY
GIRL SCOUT CAMP,NY
INDIAN POINT STATION,NY
LLOYDS NECK,NY
MANHATTAN,NY
MASHOMACK,NY
MEDINA,NY
MASSENA,NY
OVER CASTLE ROCK,NY
OSBORN,NY
PALISADES,NY
PLATTSBURG,NY
POTSDAM,NY
SANBORN,NY
STONEY PT,NY
ST PETERS SCHOOL,NY
SCHERMAN,NY
STILES,NY
TABLE ROCK,NY
UTOWANALAKE,NY
WEGEL,NY
80.3333W
79.9833W
76.3S06W
7S.1333W
77.8650W
0
0
0
0
352
ERIE,PA
HIllERSVIllE,PA
AItINGTON,PA
STATE COllEGE,PA
PSU
PSU
HSC
PSU
PSU
72.5S53W
73.145SW
72.1709W
72.9517W
73.0650W
73.0533W
72.S00SW
73.1811W
72.6278W
72.6067W
300
85
370
366
344
295
580
134
262
240
BAlTIHORE,VT
COlCHESTER,VT
DERBY,VT
FlETCHER,VT
HINESBURG,VT
IRA,VT
HARlBORO,VT
HIDDlEBURY,VT
HONTGOHERY,VT
HONTPElIER,VT
WES
LDO
WES
LDO
LDO
WES
LDO
LDO
LDO
LDO
27
-4 9 1
3 S1
67
S -49
1 5.0
1 10
0
30
SItU
LDO
SItU
LDO
LDO
LDO
CON*
LDO
LDO
LDO
LDO
CON*
CON*
CON*
CON*
LDO
LDO
CON*
PENNSYLVANIA
BVR
ERI
MVL
PHI
SCP
40.7000N
42.1333N
39.9992N
40.1166N
40.7950N
ItEAVER,PA
VERMONT
BVT
COV
DVT
FLET
HBVT
IVT
MARL
MDV
HGVT
HPVT
43.3488N
44.5777N
44.9620N
44.7228N
44.3623N
43.5221N
42.8383N
43.9991N
44.9136N
44.2783N
PAGE -4 OF -4
TABLE 1 Continued
* STATION CODES NOT ALL CLEARED THROUGH NEIC
OPERATORCODE
CON
-
CONSOLIDATED EDISON,INDIAN
Mar~ Houldaw
DGS - DELAWAREGEOLOGICAL SURVEY
Kenne~h Woodruff
F'OINT,NY
(201)
785-0700
(302)
738-2833
EPB - EARTH PHYSICS BRANCH,DEPT.OF ENERGY,HINES,AND RESOURCES,CANADA
Dr. Rober~ We~miller
(613) 995-5548
LDO - LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITY
Ellwn
SchlesinSer-Hiller
(914)
359-2900
x374
MIT - MASSACHUSETTSINSTITUTE OF TECHNOLOGY
Jaw Pulli
(617) 253-5415
HSC - MILLERSVILLE STATE COLLEGE
Dr. Charles K. ScharnberSer
(717) 872-3295
PSU - PENNSYLVANIA STATE UNIVERSITY
Dr. Shel~on Ale){ander
(814) 865-2622
SBU - STATE UNIVERSITY OF NEW YORK AT STONY BROOK
Dr. Rober~ Liebermann
(516) 246-6090
Dr. Donald Weidner
(516) 246-8387
WES - WESTONOBSERVATORY,
BOSTON COLLEGE
Dr. John E. Ebel
(617) 899-0950
Vladi.ir
Vudler
(617) 899-0950
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TABLE 3
EARTHQUAKEDATA LIST
NORTHEASTERNUNITED STATES AND ADJACENT REGIONS
APRIL
JUNE
-
1981
ARRIVAL
STA PHASE
---
1981APR040924
DUX iPs
09
WES iPsC 09
COD iPs
09
COD eSs
09
UCT ePs
09
HD2 eP~
09
HD2 eSs
09
NHA ePs
09
HD1 ePs
09
HII1 eS~
09
HII3 ePs
09
HRV iPs
09
HD5 ePs
09
MIlS eSs
09
MD4 ePs
09
HASH ePs
09
HIIH ePs
09
WFM iPs
09
GLO iP*
09
BCT ePn
09
BCT eSn
09
PNH ePn
09
PNH eSn
09
ECT ePn
09
WPR .Pn
09
LDNYePn
09
BVT ePn
09
BVT eSn
09
HNH
IVT
BNH
DVT
.**
e**
e**
e**
HIH
e**
1981APR071719
GNT iPsD
GNT
MNT
MNT
TRQ
TRQ
DVT
DVT
iSs
eP
eS
iPs
eSS
iP*
eS*
GAC eS~
Continued
17
17
17
17
17
17
17
17
DIST
AZ
AMP
PERIOD
RI, PORTSMOUTH HEARD AND FELT
24 24. 0
6S~,.
3Sds
24 27. 7
89~,. 3S4ds
60mu O.2sec
24 27.2
91km
83ds
24 38. 5
91~,.
83ds
24 27.6
91km 288ds
24 29.4
102~,m 267ds
24 42.0
102~,m 267ds
24 29.8
104~,. 108ds
24 29.9
10Skm 268ds
24 42.7
105~,m 268ds
24 30.0
105km 266ds
24 30.6
106~,m 34SdS
24 30.4
108k.
263ds
24 43. 3 108~,m 263ds
24 30.6
109k.
266ds
24 30.8
109k.
237dS
24 30.7
110km 26Sds
16mu O.1sec
24 32.1
116km 349d.
24 32.3
124km
19ds
24 41.8
182~,m 267d~
2S 02. 5 182~,m 267ds
24 41. 8 184~,m 336ds
25 03. S 184~,m 336ds
24 42. 0 185~,m 279dS
24 44. 7 202~,m 260ds
24 44.9
203km 2S0ds
24 46. 7 226~,m 331ds
26mu O.2sec
2S 12.5
226~,m 331ds
251~,m 340ds
16mu O.2sec
263km
326ds
13mu O.2sec
334~,.
3S9ds
llmu
O.2sec
383~,m 349ds
13mu O.2sec
443~,m
23ds
9mu O.2sec
MAGNITUDE
2.97Mn
2.76H"
2.70Hc
2.64Mn
2.6611c
2.76Hc
2.69Mc
2.83Hn
2.70Hc
2.68Hn
2.73Hn
2.62Hn
2.75Hn
2.64Hn
PQ, 50 KM W FROMG£NTILLY
19
19
19
19
19
19
19
20
31.8
38.5
37.7
49.3
42.7
57.3
46.0
04.1
17 20 18.0
57~..
57km
83~~m
83~.m
119km
119~.m
146~.m
146km
62ds
62ds
214ds
214ds
276ds
276ds
152ds
152ds
196k.
257ds
15mu
O.2sec
2.43Mn
2.44Mc
TABLE 3 (Con~inued)
STA PHASE
--BNH e
MIa eF'n
MIa eSS
PaSe
ARRIVAL
17 19 57.0
17 20 27.3
1981APR131731
UNB eP
17
PQl iP*D
17
PQO iP*D
17
HNME eP*
17
EMM ePn
17
CBM ePn
17
HAL eF'n
17
HAL eSn
17
MIM ePn
17
BPM ePn
17
JKM ePn
17
DIST
220k.
2281-",
228klJl
AZ
140ds
27Sds
27Sds
PERIOD
111r'u
O.2sec
ePn
ePn
epn
17 32 28. 3
17 32 31.8
17 32 38.4
358~,m
394~,.
450~,.
298ds
244ds
253ds
DVT
GNT
MNQ
MNQ
F'NY
TRQ
GAC
e**
ePn
ePn
eSn
ePn
iPnD
ePn
17
17
17
17
17
17
507~,.
508~,.
560km
560~,.
617
676km
751ka
260ds
278ds
338ds
338ds
262ds
276ds
272ds
32
32
33
33
33
33
46. 6
52.0
47. 5
00.0
06.8
16.7
PQ, HUNTINGDON
08 52.2
19km 1 8 4 d s
08 54. 4
19~,m 1 8 4 d s
08 54. 5
40~,m 2 7'0 d s
09 00. 9
40~,m 2 7,0 d s
08 57. 2
49~,m 1 2 3 d s
08 59. 6
66~,. 1 0 6 d g
09 07. 9
66~,m 1 0 6 d s
09 00.1
69~,. 2 2 6 d s
09 08. 9
69~,m 2 2 6 d s
09 01.8
78km 1 S 0 d s
09 11.7
78k.
1S0 d s
09 08. 9 125~,. 1 8 4 d s
09 24. 7 125~,. 1 8 4 d s
09 09.2
128km 1 8 3 d s
09 25.2
128km 1 8 3 d s
09 09. 5 129~,. 1 8 5 d s
09 25. 4 129~,. 1 8 5 d s
9
MAGNITUDE
2.46Hn
NB, 70KM E FROM FREDERICTON FELT MILDLY
31 48. 5
63~,m 275ds
32 02.7
162km 227ds
32 03.1
164~,. 232ds
32 04. 5 170~,m 281 ds
32 05.4
184ka 226ds
32 09.0
210km 304ds
77mu O.2sec
3.41Mn
32 11.0
225~,.. 128ds
32 36. 6 225~,.
128ds
32 15.0
261~,. 255ds
32 16. 5 272~,m 240ds
32 25.6
345km 267ds
146.u
O.2sec
3.88Mn
lPQ
TRH
BNH
1981APR19 0408
BGR eP~
04
BGR eS~
04
HSNY eP~
04
HSNY eS~
04
DANY eP~
04
PNY eP~
04
PHY eS~
04
PTN eP~
04
PTN eS~
04
WHY eP~
04
WHY eS~
04
CTR eP*
04
CTR eS*
04
CLY eP*
04
CLY eS*
04
APH eP*
04
APH eS*
04
AHP
Z of
2.50Hc
3.94Mc
3.94Hc
3.80Mc
3.85Hc
3.981'1c
145mu
0.25&'-'
4.0SMn
TABLE 3 (Continued)
STA PHASE
---
ARRIVAL
1981HAY12 0426
WBO iPsC 04
WBO iS~
04
HSNY eP~
04
HSNY eSs
04
PTN ePs
04
BGR ePs
04
BGR eSs
04
GAC eP~
04
DANY eP~
04
DANY eS~
04
FHO eP~
04
CRaG eP~
04
CRaG eS~
04
WNY eSs
04
PNY eP*
04
PNY eS*
04
CTR eP*
04
CTR eS*
04
APH eP*
04
APH eS*
04
TRQ eP*
04
TRG eS*
04
HBVT eP*
04
GRG ePn
04
GRG eSn
04
Pa.-e
DI.ST
NY, HASSENA
26 35.0
15~,.
26 36. 7
15~,m
26 36.4
23km
26 39. 4
23~,m
26 39. 5
40~,m
26 42.2
60k.
26 49.4
60km
26 47.0
92~,.
26 48.9
103~,m
27 01.6
103~,m
26 49. 4 105~,m
26 51.0
115~,m
27 05.1
115~,.
27 06.0
116km
26 51.9
124km
27 07. 3 124~,m
26 53.6
127km
27 08.7
127k.
26 53. 6 129~,m
27 09.1
129~,m
26 57. 5 152~,m
27 15.6
152km
27 01.0
175km
27 03.0
197km
27 26.1
197km
1981MAY18 0722
NJ, RAMSEY
RAMA eP
07 22 14. 4
3~,m
TBR ePS
07 22 14.5
7km
CHR eF's
07 22 16.0
14ktrl
CHR eSs
07 22 18.2
14~,m
STL ePS
07 22 16.4
19~,m
SRM ePS
07 22 16.6
21~,.
PAL ePS
07 22 17. 4
25~,m
PAL eSS
07 22 20.9
25km
GPD ePS
0722 16.9
25km
GPD eSs
07 22 19.1
25km
SNP ePS
07 22 17. 0
25~,m
GSC ePS
07 22 17. 0
25~,m
IPS ePS
07 22 17.5
28km
IPS eS.
07 22 21.0
28km
DBM ePS
07 22 17.6
29km
DF'L ePS
07 22 17. 8
29~,m
OSB ePS
07 22 18.9
38~,m
OSB eSs
07 22 23. 3
38~,.
WGL ePS
07 22 19.1
39k.
WGL eSs
07 22 23. 2
39~,m
LVNJ ePS
07 22 22.0
57km
LVNJ eSS
07 22 28.7
57km
PQN ePS
07 22 24.7
77km
BCT ePS
07 22 25.8
81~,m
Continued
AZ
AMP
PERIOD
3 at'
9
MAGNITUDE
309ds
309ds
66ds
66ds
164dS
99ds
99d.fJ
343d.fJ
99d.fJ
99ds
305ds
192d.fJ
192d.fJ
120d.fJ
94ds
94d.fJ
155d.fJ
155d.fJ
157dg
157dg
17ds
17ds
110ds
343ds
3-43dg
29Sds
332ds
3-46ds
3-46ds
S2ds
-41ds
111ds
111ds
2S3ds
2S3ds
-4Sds
36ds
-4-4dS
-4-4dS
36ds
SOds
3Sds
3Sds
3Sds
3Sds
23Sds
23SdS
26-4ds
55d~
2.09Hc
PaSe
TABLE 3 (Continued)
Sf A
---
PHASE
WPNYePs
PRIN ePS
PRIN eSS
CLIN ePS
HDM eP*
MD5 eP*
MD5 eS*
LNX eP*
UCT e**
BVT e**
IVT e**
ARRIVAL
07
07
07
07
07
07
07
07
22
22
22
22
22
22
22
22
25.8
28.5
39.3
27.4
36.5
36.6
53.7
37.7
DIST
82k18
92k.
921-",
92k.
1461-",
1471-,1'1
1471-",
159k..
1821-,18
284k.
287k..
AZ
12ds
210ds
210ds
17ds
72ds
73ds
73ds
28ds
62ds
27ds
19ds
AMP
PERIOD
4 of
MAGNITUDE
3.au
O.1sec
2.02Mn
13mu
4mu
9mu
4mu
O.1sec
O.2sec
O.2sec
O.2sec
2.69Hn
2.0SHn
2.4SHn
2.16Hn
1981MAY24 0242
ME, W OF PASSAMAQUODDY BAY
PQ1 ePS
02 42 30.5
18~,m 220ds
PQO eF's
EMM ePS
EMM eSs
HNME eP*
HNME eS*
MIM eP*
MIM eS*
02
02
02
02
02
02
02
42
42
42
42
43
42
43
31. 7
33. 7
39.2
51.0
07.1
51.9
09.4
23~,a
40~,a
40~,.
141~,.
141~,.
148km
148~,m
259ds
217ds
217ds
334ds
334d~
280d~
280d~
9
2.21Hc
1.87Hc
17au
O.1sec
5mu
O.2sec
2.07Hn
1.90Hc
6mu
O.2sec
2.15Hn
1.91Hc
1981JUN022315
CTR eP
23
APH ePS
23
WNY ePS
23
WNY eSS
23
CROGePS
23
PTN ePS
23
PTN eSS
23
BGR ePs
23
BGR eSS
23
MDV ePs
23
HDV eSs
23
DANY ePs
23
DANY eSs
23
PNY eP*
23
PNY eS*
23
NY, BLUE MOUNTAIN LAKE
15 30.7
7km 178ds
15 31.3
11km 195ds
15 41.1
70km
43ds
15 50.1
70km
43ds
15 42.0
76km 268ds
15 43.1
82km 330ds
15 53.0
82~,m 330ds
15 45.5
100~,.
4ds
15 57.8
100~,.
4ds
15 45.8
103~,m 86ds
15 58.9
103~,.
86ds
15 46.6
104~,m 28ds
15 59.4
104~,.
28ds
15 49.1
124~,.
36ds
16 05.3
124k.
36ds
1981JUN070900
TRQ i P~D 09
TRO eS~
09
OAC eP~
09
OAC iS~
09
WBO iP~
09
WBO eS~
09
MNT eS~
09
ORa eP~
09
ORa eS~
09
FHO eS~
09
PO, 45KM SW FROM MONT-TREMBLANT
00 34.3
4 7~,m 27d~
00 40.1
4 7~,m 27d~
00 35.4
53km 253d~
00 41.6
53km 253d~
00 42. 8 100~,m 201d~
00 55.2
100k.
201d~
00 54.9
102~.. 112d~
00 45.6
116km 317d~
00 58.9
116~.. 317d~
00 59.0
117km 249d~
1.76"'(.'
Pa~e
TABLE 3 (Continued)
STA PHASE
---
ARRIVAL
DIST
AZ
PERIOD
AMP
PG, 15KM S FROM LAMALBAIE
31 28.5
21k.
112dS
31 30.5
21km 112ds
31 56. 4 199~,. 235dS
32 22. 2 199~,. 235ds
33 05. 4 354~,. 250dS
1981JUN142334
OAC iPs
23
GAC i 5s
23
TRQ iPs
23
TRQ e5s
23
OTT e5s
23
WBO eF's
23
WBO e5s
23
FHO ePs
23
FHO e5s
23
ORQ ePs
23
ORQ e5s
23
CKO ePn
23
CKO e5n
23
ONT ePn
23
GNT e5n
23
PQ, 35KM E FROM GLEN ALMOND
34 53. 3
37~,m 260ds
34 58. 1
37~,m 260ds
34 56. 8
62~,m 35ds
35 04. 8
62~,m 35ds
35 06. 5
68~,m 233ds
35 00. 8
87~,m 194ds
35 12.1
87km 194ds
35 03.0
1OO~,. 250ds
35 15.0
1OO~,m 250ds
35 05. 5 114~,m 326ds
35 19.6
114km 326ds
35 17.1
191~,m 279ds
35 39.4
191~,m 279ds
35 19.5
215~,m
71ds
35 45.1
215km
71ds
1981JUN161755
LPQ iPSC
LPQ iSS
D2A ePS
CBM eP*
JKH ePn
GNT iPnC
GNT eSS
DVT ePn
MNQ iPnC
PNY ePn
GRQ eSn
CKO ePn
CKO eSn
UCT e**
PQ, 9KM
55 05.9
55 07. 8
55 15.5
55 28.7
55 34. 8
55 36.3
56 03.8
55 49.2
55 52.3
55 57. 8
56 51.2
56 21.4
57 20. 0
HDH
JAQ
JAQ
e**
iPn
eSn
17 56 47.9
17 58 05. 8
1981JUN162122
BPM iPsD
BPM eSS
EMM e**
PQO ePS
PQO eSS
PQ1 iPs
PQl
eSS
HIM
iPSD
Continued
MAGNITUDE
3.44Hc
3.48Hc
3.63Mn
3.79Hn
197d~
332dS
332d~
HE, E OF ELLSWORTH
21 22 08.8
21 22 12. 9
21
21
21
21
21
NW FROM LAPOCATIERE FELT
20km 167ds
20~_m 167ds
81k.
121ds
161~_m 113ds
207~_m 184ds
217km 235ds
217km 235d~
327~_m 211d~
114mu O.2sec
349~_m 15dS
402~_m 223dS
452km 259d~
589~_. 256d~
589~_. 256dS
655~_. 196d~ 132mu 0.4.."
698km
806km
806~_m
9
FELT
1981JUN11 1131
LPG iPSC 11
LPG eSS
11
GNT ePn
11
GNT eSS
11
TRG eSS
11
17
17
17
17
17
17
17
17
17
17
17
17
17
5 of
22
22
22
22
22
15.8
25.5
16.9
26.6
17.7
36~~. 269ds
36~~. 269ds
68~~",
80ds
79~~m 60ds
79~~.
60ds
85k.
69ds
85~~.
69dS
88~~. 321d~
5mu
5mu
O.lsec
O.lsec
1.93Hn
2.01Hn
1.72Hc
6mu
O.1sec
2.09Hn
1.61Hc
7n.u
O.2sec
2.00Mn
1.67Hc
TABLE 3 (Continued)
STA PHASE
--111M
HKI1
HKI1
eSS
ePS
eSs
Pas:e
ARRIVAL
DIST
21 22 27.8
21 22 20.7
21 22 32.2
88k",
104k.
104k.
AZ
321ds
272ds
272ds
1981JUN172103
NY, TUPPERLAKE
WHY ePS 21 03 27. 5
35~,m 62ds
CTR ePS
CTR eSS
APH ePS
AF'H eSS
BGR ePS
BGR eSS
DANYePs
DANY eSS
F'NY ePS
PNY eSS
HDV ePS
HDV eSS
CRaG ePs
CRaG eSs
21
21
21
21
21
21
21
21
21
21
21
21
21
21
03
03
03
03
03
03
03
03
03
03
03
03
03
03
28.4
33. 7
29.0
34.7
31.6
39.1
32.2
40. 0
34. 6
45. 6
35. 0
45. 9
37. 2
49.3
44~,.
44~,m
49km
49km
66~,.
66~,m
66k.
66~,m
86~,m
86~,m
90~,m
90~,m
100~,m
100~,m
203dS
203ds
204ds
204ds
351ds
351d.
30ds
30ds
40dS
40ds
107ds
107d.
249dS
249ds
1981JUN21 0209
CRaG ePs
02
CRaG eSS
02
WBO iPSC 02
W~O eSS
02
CTR ePS
02
CTR eSS
02
APH ePS
02
APH eSs
02
~GR ePS
02
~GR eSS
02
WNY ePS
02
WNY eSS
02
DANYeP*
02
DANY eS*
02
FHO iP*C
02
FHO is*
02
PNY eP*
02
GAC eP*
02
GAC eS*
02
H~VT ePn
02
HBVT eSn
02
TRG ePn
02
NY, EDWARDS
09 54. 2
50~.m
10 00.6
50~.m
09 58. 2
73~.m
10 06.9
73km
09 59.8
83k.
10 10.2
83km
09 59. 7
83~.m
10 09. 9
83~.m
10 00. 5
89~..
10 12.0
89~.m
10 04.6
113k.
10 19.2
113k.
10 06.0
123km
10 21.0
123~.m
10 09.4
145km
10 27.0
145km
10 09.3
147~.m
10 10.9
152~.m
10 29. 0 152~..
10 13.7
176km
10 35.4
176~.m
10 20.3
216~.m
1981JUN21 0504
TBR ePs
05
TBR eSs
05
RAHA ePs
05
RAHA eSs
05
LVNJ ePs
05
lVNJ eSs
OS
Continued
NJ, DENVILLE
04 14.0
32km
7Sds
04 18.0
32~,m 7Sds
04 14.0
32km
Beds
04 18.0
32km
BSd.
04 13.9
33km 203d.
04 18.0
33~,m 203d.
193dS
193ds
360ds
360ds
129ds
129ds
132ds
132d.52ds
52ds
87ds
87ds
67ds
67d.329ds
329ds
68ds
354ds
354ds
89ds
89d.15ds
AMP
PERIOD
6 at
9
MAGNITUDE
1.75Hc
TABLE 3 (Continued)
ARRIVAL
STA PHASE
---
PQN
SRH
GSC
GSC
SNP
SNP
GOB
GOB
WGL
WGL
ePS
ePS
ePS
eSs
ePS
eSS
ePS
eSS
ePS
eSS
Pa.e
05
05
05
05
05
05
05
05
05
05
04
04
04
04
04
04
04
04
04
04
15.5
17.1
17.4
24.0
17.8
24.4
18.9
26.5
19.4
27.4
DIST
AZ
42km
52"..
54"..
54km
56",m
56".m
63km
2S9d.72dS
68ds
68d.72ds
72ds
64ds
64dS
62dS
62ds
63"."
66km
66",m
AMP
PERIOD
1981JUN24 0034
GNT iPs
00
GNT eSs
00
LPG eP*
00
LPG eS*
00
TRQ iSn
00
GRG ePn
00
GRQ eSn
00
WBO eSn
00
PG, 50KM E FROM GENTILLY
34 57. 0
46~~. 256ds
35 03.0
46k.. 256ds
35 15. 7 167~~.
54ds
35 36. 3 167~~.
54ds
35 46.2
215km 264ds
35 35. 0 313~~. 274ds
36 07. 2 313~~. 274ds
36 08. 0 317~~m 240ds
1981JUN24 0513
TRQ iPs
05
TRQ eSs
05
WPO eP~
05
WBO eSs
05
FHO eSs
05
GRQ iPs
05
GRQ eSs
05
PQ, 45KM S FROM MONT-TREMBlANT
13 30.0
47k.
20ds
13 35.7
4 7~..
20ds
13 38.4
100~,m 204d~
13 51.2
100~.m 204ds
13 56.8
121~.. 251d~
13 42.3
122~,. 316d~
13 57.0
122km 316ds
1981JUN25 0449
GRQ eP~
.
PQ, 60KM NW FROM GRAND-REMOUS
04 50 01.4
GRQ
iS~
04 50 07.9
CKO
CKO
GAC
GAC
FHO
FHO
OTT
VDQ
VDQ
WBO
iP*
eS*
eP*
eS*
eP*
eS*
eS*
ePn
.Sn
eSn
04
04
04
04
04
04
04
04
04
04
1981JUN25 0955
MNT iP~
09
MNT i Ss
09
MSNYePs
09
BGR eP~
09
BGR eSS
09
TRQ iPs
09
TRQ iS~
09
Continued
50
50
50
50
50
50
50
50
50
50
12.0
27.2
16.2
33.7
17. 5
36. 4
40.4
22.1
43. 3
51. 3
55~,m
55~,m
123~,m
123km
150km
150km
158~,m
158~,.
174~,m
189k.
189~,m
227~,.
PO, 60KM
55 26. 8
55 34.4
55 27.7
55 29. 3
55 38. 1
55 29.3
55 39.6
121d~
121d~
218ds
218d~
149ds
149d~
173d173ds
160ds
324ds
324d.S
155d-
N FROM MONTREAL
63~,m 92ds
6 3~,m 92d~
68km 211dg
77~,m 177d~
77~,. 177d~
78k.
353d.
78km 353d~
7 of
9
MAGNITUDE
TABLE 3 (Continued)
STA
---
PHASE
GAC
GAC
WIIO
WIlD
DANY
DANY
OTT
OTT
PHY
FHO
FHO
GRQ
GRQ
HIIVT
CTR
CTR
GHT
GHT
DVT
DVT
HDV
CRaG
CKO
IVT
BNH
iPsD
iSs
iPSD
eSs
ePs
eSs
iPs
eSS
iPsC
iP*
eS*
iP*C
eS*
eP*
ePn
eSn
ePn
eSn
ePn
eSn
ePn
ePn
eSn
e**
e**
Pase
ARRIVAL
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
09
55
55
55
55
55
55
55
55
55
55
55
55
56
55
55
56
55
56
55
56
55
55
56
30.5
40.4
31.0
41.7
32.3
44.0
32.6
45.7
32.8
39.6
56.0
42.8
02.3
43.1
45.2
07.3
45.3
07.5
46.2
07.3
47.7
47.1
18.7
DIST
85k18
85"',.
89k.
89k18
97k.
97k.
102"',.
102"',.
103"',.
141k..
141"',.
164k.
164"',..
168"',.
183k183k.
185"',18
185"'".
188"'",
188k196"',.
196k.
241"',.
248"',.
270"'",
AZ
284d.
284ds
229d.
229ds
151dS
151ds
262dS
262ds
138ds
268dS
268ds
318ds
318dS
140d.
181dS
181ds
59dS
59ds
109ds
109ds
149ds:
204ds
284d~
153d~
111ds
8 OF
9
AMP
PERIOD
20mu
O.2sec
2.77Hn
2.55Hc
148u
12.u
O.2sec
O.2s.ec
2.52Hn
2.58Hn
2.80Hc
1981JUN251732
HNG iPs
17
HNQ eSS
17
LPG ePn
17
JAQ ePn
17
JAG eSn
17
PQ, 70KM S FROM MANICOUGAN
32 23. 9
73~~a 337ds
32 32. 8
73~~. 337ds
32 57. 0 313~~. 203ds
33 40. 1 665~~. 313d.
34 45.6
665ka
313dS
19B1JUN2B 2242
ONH ePS
22
WNH ePS
22
HNH iPsC 22
PNH ePS
22
BVT iPS
22
WFM .P~
22
BNH iPs
22
HRV ePS
22
IVT iPs
22
GLO eP*
22
TRM iP*
22
WEB iP*
22
WEB eS*
22
QUA iP*
22
HBVT eP*
22
DVT iP*
22
DUX ePn
22
HKM ePn
22
Continued
NH, W OF LACONIA
FELT AND HEARD
42 40.5
32k.
173dS
42 40. 6
36~,.
20ds
42 45.1
61km 2BSds
42 46.4
71k.
222ds
42 49. 3
B7~,m 2S4dS
42 52.7
107k.
177ds
42 54. 3 116~,.
12dS
6B.u
O. 2sec
42 S4.4
l1Bk.
1BOdS
42 54.B
122~,m 26Bd~
42 55.4
123k.
147ds
42 56.5
130km
S3ds
42 57.6
133k.
172d.
43 12.7
133k.
172dS
42 5B.1
140k.
209ds
42 59.1
150k.
307d.
43 01.5
163k.
343ds
106mu 0.2sec
43 04.6
179k.
1S9d~
43 06.6
195~,.
S1d.
MAGNITUDE
2.81H(.'
3.24Hc
3.12Hn
3.16"c
2. 77Hc
2.70"c
3.37Hn
3.0011c
TABLE 3 (Continued)
STA PHASE
--HKi't
eSn
LNX iPn
PNY ePn
CTR ePn
BPi't
Psse
ARRIVAL
22
22
22
22
43
43
43
43
28.3
06.3
08.2
11.0
22
22
22
22
22
22
43
43
43
43
43
43
13.9
18.7
24.0
26.3
27.0
29.4
e**
WND ePn
PTN ePn
WIlD ePn
PQO ePn
PQ1 ePn
TRQ ern
HNi'tE e**
DIST
195k..
1968-..
213km
237"..
251k.
253ka
297k.
337"..
362k..
369km
379k.
403"..
AZ
51dS
226dS
312ds
279ds
61ds
238ds
293ds
300ds
63ds
65ds
322dg
43ds
AHP
PERIOD
9 of'
9
MAGNITUDE
45Slau
O.1sec
4.33Mn
13..u
O.2sec
2.72Mn
12mu
10mu
O.2sec
O.2sec
2.72Hn
2.64Hn
33.u
O.J.ec
2.99Mn
3.22Mc
3.1-4Hc
TABLE -4
.
FORESHOCKS. AFTERSHOCKS. AND MICRO-EARTHQUAKES
DATE ARRIVAL-TIME STATION
MAGNITUDE
lOCATION
19 APR 082121.
BMl
<1
BLUE MOUNTAIN LAKE, NY
24 APR 0026
BHL
<1
BLUE MOUNTAIN LAKE, NY
25 APR
1650
BML
<1
BLUE MOUNTAIN LAKE, NY
28 APR
100816.
F'G!
2.6
SOUTH OF HALIFAX, NS
28 APR
100923.
pal
2.7
SOUTH OF HALIFAX, NS
01 JUN
0559
HD2
-0.7
HOODUS, CT'
01 JUN
0643
HD2
-0.6
HOODUS, CT
01 JUN
0646
HD2
-1.1
HOODUS, CT
04 JUN
2102
BMl
12 JUN
0615
HD1
12 JUN
0617
HDl
18 JUN
0317
MD1
-1.8
HOODUS,CT
26 JUN
0525
MD1
-0.1
HOODUS, CT
<1
-0.7
<-2
BLUE MOUNTAIN LAKE, NY
HOODUS, CT
MOODUS.CT
TABLE 5
SUSPECTEDAND POORLY LOCATED EARTHQUAKES
NORTHEASTERNUNITED STATES AND ADJACENT REGIONS
APRIL
-
JUNE
1981
1981APR14 0952
*EPB 09 52 07
*WES 09 52 07
HNME eP*
09
HNME eS*
09
PQl ePn
09
POl eSn
09
PQO ePn
09
PQO eSn
09
EMH
HIM
ePn
ePn
PQ, 70KM E OF FREDERICTON
46.1N
65.8W
18R
0.3
46.1N
65.9W
OR 0.29
67 12.5
52 33.2
161~,. 272ds
15.u
0.25_"
52 52.2
161~,. 272ds
52 34. 9 176~,. 220d~
52 56.1
176~,m 220ds
52 34. 9 176~,. 225ds
52 56.2
176~,. 225ds
09 52 38.5
198~,.
219d~
19mu O.2sec
09 52 46.1
264k.
249ds
7mu O.2sec
1981APR281007
*WES 10 07 16
PQ1 ePn
10
EHH ePn
10
EHH eSs
10
NOVA SCOTIA, S
44.4N
63.7W
07 59.1
296km
07 59.8
306~,m
08 43.6
306~,m
6.3
2.6Mn 2.8Mc
2.59Mn
2.66Mc
2.B1Hc
2.84Mc
2.78Mn
2.-48Mn
OF HALIFAX
OR 0.21
39 11.9
283ds
20mu O.3secc
279ds
46mu O.3s£'c
279dS
6.5
2.8Mn
2.59Mn
2.96Mn
PQO ePn
HNHE ePn
HNHE eSS
10 08 00.5
10 08 11.1
10 09 08.0
309~,m
392k.
392km
284ds
302ds
302ds
23mu
32mu
0.35ec
0.45&C
2.74Hn
2.S4Hn
HIM
10 08 16~2
436km
285ds
23mu
O.4sec
2.74Mn
ePn
1981HAY010438
*WES 04 38 53
HNME iPs
04
HNHE eSs
04
PQO eS*
04
HIH eS*
04
PO1 eS*
04
NB, N OF lAKEVIllE
46.4N
67.8W
OR 0.16
38 57.9
30km 218ds
39 01.4
30km 218d~
39 36.9
155km 172ds
39 38.4
160k.
219ds
39 39. 7 166~,m 168ds
1981.JUN040327
*WES 03 27 59
HE, CHAIN LAKES
45.2N
68.1W
OR
FoGO
PGO
PG1
PG1
ePs
eSs
ePs
eSs
03
03
03
03
1981JUN050844
*WES 08 44 06
PQl eP*
08
PQl eS*
08
PQO eP*
08
PQO eS*
08
EMM eP*
08
HNHE eP*
08
HNHE eS*
08
28
28
28
28
08. 1
14. 7
10. 2
18.8
55km
55~..
69~..
69km
2.96Hc
0.08
116d.s
116d.s
119d.s
119d.s
NB, SE OF OROHOCTO
45.7N
66.2W
OR 0.25
44 26. 3 123~,. 227d~
44 41.7
123km 227dS
44 26.8
125k.
234dS
44 41.8
125km 234ds
44 29. 5 145~,. 225d~
44 30. 9 150~,m 292d~
44 48.4
150km 292dS
28
17
7mu O.1sec
8.4
3mu
1.99Hn
O.lsec
2.0Hn 1.8Hc
1.59Hc
1.S7Hc
1.S9Hc
1.S6Hc
36
259
4mu O.1s.ec
28 1.8Hnl.6Hc
1.77Hn
1.S8Hc
3mu
1.78Hn
O.1sec
1.65Hc
85
12.6
4mu O.1sec
4.3
2.07Hn
1.S6Hc
5mu
O.lsec
2.19Mn
2.02Mc
78JU
0.2sec:
0.1$ec:
2.19Mn
2.02Mn
1.8611c
3mu
2.1Hn
1.9Hc:
TABLE 5 (Continued)
Page
1981JUN10 0715
*WES 07 15 50
POO iPs
07
POO eSS
07
PQl iPs
07
POl eSS
07
ME, N OF GRAND FALLS LAKES
45.3N
67.5W
OR 0.39
87
362
15 56.5
39~,. 181ds
6mu O.1sec
16 00. 7
39~,. 181ds
15 57.4
49~,. 16ads
4mu O.1s~c
16 04.1
49~,m 168ds
1981JUNll 1551
*WES 15 51 51
D3A ePs
15
D1A iPs
15
AGH iPs
15
HE, NEAR DICKEY
47.2N
69.1W
OR
51 53. 0
9~.m 207ds
51 53.4
11~.m 172ds
51 53.4
11~.m 139ds
*
2 of
114
2
1.6Hc
1.63Hc
1.64Mc
O.4Mc
O.47Mc
O.29Hc
SOURCE
EPB - Earth Ph~sic$
Branch,
Dept.
of Eners~,
WES - Weston Observator~
of Boston College
Mir..es,
arId Resources
Canada
DISTRIBUTION
No.
--
Recipient
30
Dr.
30
Dr.
:5
Dr.
M.
Nafi
Technolo~~
5
Dr.
Alan Kafka
Laaont-Dohertw
5
Dr.
Andw Hurphw,
Branch,
Nuclear
Paul
W.
Shelton
Chief,
Site
ReSulatorw
Pomeroy,
Toksoz,
Safetw
Research
Co..ission
Coordinator
NEUSSN
Massachusetts
Institute
and Ellyn
Schlesinser-Miller
Geolosical
Observatorw
S.
Ale>:ander,
Pennsylvania
state
Uni\ler$.it~
5
Mr.
~
Earth
1
Consolidated
1
Weston
1
File
N
Weston
Ken Woodruff,
Ph~$ic$
Delaware
Branch,
Edison
Observstorw
Observatory,
Geolosical
Canada
of
New York
Librarw
Boston
Colle.e
SurYe~
of