~S-NUREG~O238~GO9
NORTHEASTER~t
U. S. SEIS~'IC NETWORK
3ULLETINNo. 8
OF
$EISMICITV
July
,
OF THE NORTHEASTERNUNITED STATES
01, 1971.'" Sept~mbe~ 30, 1.977
Compiled
and Edited
by
E.F. Chiburis
R.O.
Ahner and T. Gr~ham
Weston Observatory-Boston
College
Coordinator
Paul W. Pomeroy,
United
State~
April
Geological
Survey
1978
MEMBE~S
Weston Observatory
of Boston College
Massachusetts
Institute
of Technology
Lamont-Doherty
Geological
Observatory
of Columbia
Pennsylvania
State University
Delaware C-eological
Survey
Maine Geolo~ical
Survey
University
Nuclear Regulatory
Commission
United States Geological
Survey
National
New York
State
Energy
New York
Science Foundation
and Resources
State Science
Development
Service
c
Authori.ty
ABSI'RlCr
'Dds reIX)rt is the eighth quarterly
in the oortheastem
1977.
Incl~
of seisnicity
in the
Unit8:1 States am rovers the periOO J\1ly - Septati:)er
are ~phic
the epicenters for the quarter,
eight quarters.
b1lletin
naps of the seisnic statim
and the Clm1lative epicenters for the
Also incl1.rlOO are tables of the locatioo
operating during tbis quarter am of arrival
for the eight quarterly
looatians,
epice'lters.
of the stations
tjJres, arrplitmes,
am periOOs
~EIX;E}.o1ENrs
Partial
or full
sup{x)rt fran various agencies for the ~ratioo
of the Northeastern U. S. Seismic Ne~rk
'n'le agencies providing
s~
is gratefully
ackno..1l~ged.
to 11-.::airersof NE.1JSSN
are as fo11011:
- Office of Reactor Safety Research,
'n1e United States C£ological Survey - Offi~
of Ear"tl1quake Sttrlies,
The National Science Foundation - Geophysics Program,
'n1e Nuclear
Pegulatory
Camtission
amResources
'n1e New York State
Energy
'n1e New York State
Scier¥:e Servi~
IS.ta
fran
the Seismic Ne~rk
CatparlY of New York ~
is gratefully
provided
~veloprent
Authority,
q;,erated l7j the Consolidated
to tBlSSN arrl the receipt
ard
Frlism
of tJ1ese data
acknaolledgedo
In addi tioo
to the aOOve ~atia1al
s~rt,
providoo by the Office of ~virOnIrenta1 GeolCXJY
of ~
equiprent was also
u. s. GeolCXJical
Survey to rrenOOrs of NE1JSSN.
'n1e advancm Pesearch Projects ~
providoo a nunter of ~~
am arrplifiers
of the ~-t;la-It
of ~fense
to all ilclOOrS of NEUSSN.
3
INTRODUCTION
This
in
the
report
is
northeastern
United
The organizations
1977.
Weston Observatory
Observatory
Delaware
and arrival
Department
were not
for
of Energy,
DANY, CROG-NY, FLET-VT,
are
five
New Hampshire.
operating
APT-CT,
format
during
I is
the
period
data
earthquakes
for
the
information
Epicentral
data
Three
or four
Branch,
this
reporting
The five
by state
of
July-September,
period
new stations
Also
by Weston Geophysical
the
U.
National
S.
following
letter
station
Earthquake
Geological
the
Survey
included
Engineers
the
operator
table
code,
Information
Five
stations
code).
is
Center
The
as follows:
as recognized
as noted
in
stations
1977.
the
(except
the
Canada
and MGVT.
in
by
in Canada near
Physics
during
included
in
were supplied
events
bulletin.
a list
Institute
BPT-CT, TMT-CT, DHN-NY, and LAP have been closed.
of
1.
Table
Geological
and the
Earth
MARL-VT,
are
University,
network.
operating
operated
bulletin
Massachusetts
and Resources,
the previous
are
stations
Point
by the
Mines
this
New Jersey
some of the
stations
in
the
seismicity
July-September
Lamont-Doherty
State
Indian
of
period
for
Additional
were supplied
listed
data
and northern
data
bulletin
the
College,
Survey.
seismic
for
University,
Edison
time
States
Five
Boston
New York
Consolidated
States
Pennsylvania
Geological
southeastern
United
of
the
quarterly
supplying
of Columbia
of Technology,
the
eighth
the
by
of the
by an asterisk
4
2.
3.
4.
Station
latitude,
Station
longitude,
degrees-minutes-seconds,
Station
elevation,
meters.
5.
Geographic
6.
Network
Figure
Seismic
the
having
near
north,
facility
in
Maine near
responsible
clusters
Attica
and the
the
is
station.
there
stations
U.S.
stations
of
near
the
regions
Blue Mountain
Indian
the
Similarly,
closely
are three
too dense to represent
in the west,
too
west.
map of the Northeastern
of
southeast.
Dickey
for
In New York
(NEUSSN).
north.
station.
a geographic
Network
separately:
in
name of
operator
1 is
of coverage
degrees-mi~utes-seconds,
spaced
Point
array
Lake
nuclear
in northern
to be clearly
represented
NORTHEASTERN
U.S. SEISMICITY
During
the
period
quakes were detected
In addition,
epicenter
eight
within
a geographic
Table
with
II
by this
and located
in
earthquakes
the
of
epicenters
a chronological
list
the
following
1.
Date and geographic
2.
The source
bulletin,
the
occurred
100 kilometers
map of
is
covered
fourteen
northeastern
u.s.
for
July-September
of
United
in Canada having
the
the
border.
epicenters
earthStates.
an
Figure
2 is
1977.
in Figure
2
format:
name of
of epicenter
LDO-Lamont-Doherty
the
event.
determination
Geological
Observatory
WES-Weston Observatory
MIT-Massachusetts
Institute
EPB-Earth
Branch,
Physics
Resources,
Canada
of Technology
Dept.
of Energy,
Mines
and
5
3.
Origin
time
4.
Event
latitude,
Event
longitude,
s.
6.
of
the
event,
degrees
hours-minutes-seconds,
north.
degrees
Root-mean-square
error
west.
of
the
least-squares
solution
in
seconds
7.
Event
the
magnitudes.
relation
Most magnitudes
developed
component
Lg wave";
events
Table
the
in
computed
with
to
ML, are calculated
the
much less
appear
the
of
one second,
to be consistent
otherwise.
events
using
using
"vertical
than
are computed
labelled
assigned
for
the wave periods
are often
Magnitudes
unless
magnitudes
although
magnitudes
the network.
relation
II
by Nuttli
were computed
within
using
Nuttli's
Some of
the
in Canada,
a relation
identified
developed
by
Richter
8.
Event
depth,
kilometers.
to a particular
For the
one source,
EARTHQUAKE
events
that
each of
the
and magnitude
first
The format
the
depth,
the
letter
have epicenters
locations
solution
is
R is
was restrained
appended
determined
by more than
listed.
DATA
The station
the
If
arrival
calculations
two lines
for
times
the
for
are
and amplitudes
listed
each event
additional
used for
in Table
already
information
given
III,
epicenter
as well
in
in Table
Table
III
is
as
II
as follows:
6
1.
Station
2.
Emergent
(E)
P or S.
If
code.
motion
is
or
the
also
impulsive
phase is
included
known:
compression
Station
arrival
3.
4.
5.
Azimuth
6.
Peak-to-peak
Epicentral
signal
been corrected
7.
Period,
in
polarity
first
is
(D).
UTC.
degrees.
motion,
in millimicrons,
amplitude
system
seconds,
of
All
wave).
for
system
of
kilometers.
ground
(surface
direction
or dilation
station,
maximum recorded
by phase type:
hour-minute-second,
distance,
to the
impulsive,
when the
(C)
time,
followed
(I),
of
of
the
the vertical-component
reported
amplitudes
have
response.
the wave from which
amplitude
was
measured.
8.
Nuttli
magnitude
as computed
period
and distance.
from
the
amplitude,
MICRO-EARTHQUAKES
In addition
listed
in
Tables
to
the
twenty
II
and III
two earthquakes
there
were thirty
aftershocksiand
the
continuing
series
Blue Mountain
Lake,
New York.
These events
Table
IV.
previously
one foreshocks,
of micro-earthquakes
are
listed
near
in
7
SUSPECTED AND POORLY LOCATED EARTHQUAKES
In addition
and rv six events
identified
detected
of
events
Table
III.
to
is
listed
earthquakes
were detected
as being
to allow
the
earthquakes
an acceptable
in
Table
listed
in
Tables
II,
III,
which could not be definitely
or not
enough arrivals
computer
V, which
solution.
has the
were
This
same format
class
as
North Latitude,
0
CD
V
0
0
r-v
to
V
0
0
V
V
an
v
degrees
0
~
V
N
v
0
V'
0
V
(0
0
w
w
0
CX)
w
0
0
,
0
C\J
,...
0
V
,
0
<D
r--
0
a>
,...
0
0
m
Figure 1.
Seismic
July
stations
- September
operating
1977
during
the
period
0
0
0
V
0
m
~
a>
~
North
0
U)
V
0
0
rv
CD
V
0
It)
V
Latitude,
0
V
V
degrees
-
0
0
0
C\I
V
~
V
V
0
V
CD
0
0
CX)
<D
0
0
r--
0
C\I
r--
0
.q,
0
0
m
to-
0
Fiqure 2.
Earth~e
epicenters
during
the period
July - September 1977
Red epicenters
denote
felt
events
0
0
q-
0
0)
~
0
a)
~
North
0
0
CD
V
tV
0
U)
V
0
It)
V
Latitude,
degrees
0
0
~
V
qq-
0
(\I
V
0
V
0
0
0
q-
m
f()
0
V
W
0
(0
(0
0
a>
(,D
0
0
~
0
N
r-
0
v
to-
0
w
,...
0
a>
r--
0
0
aJ
Fiqure 3.
Earthquake
OCtober
epicenters
1975
Red epicenters
-
during
September
denote
felt
the
1977
events
period
.
a)
~
~
TABLE I
LIST OF OPERATING S£ISMIC'STATIONS
JULY - SEPTEMBER1977
STA
ID
LATITUDE
LO-NGITUDE ELEVATION
DGMN SEC
DGMN SEC
METERS
CANADA,STATIONS
MND
MNT
OTT
50314~.ON
4530
USED FOR LOCATIONS'.
IN THIS BULLETIN
754257~OW
0
112
83
MANICOUAGAN,PQ
MONTREAL,PQ
OTTAWA,PO
7323 1.9W
732440.8W
723123.6W
7151 5.7W
7215 2.0W
69
342
24
110
149
BROOKFIELD,CT
ELLS~ORTH', CT
HADDAH,Cr'
N STONINGTON,CT
STORRS,CT
WES
WES
WES
WES
WES
NEWARK,DE
fiGS
684612.0W
9. ON 7,33723.
452338.0N
OPERAroR
OW
CONNECTICUT
BCT
ECT
HDH
NSC
UCT
BY STATE
412936.0N
4150j4.7N
4129 8..7N
412950.7N
414954.0N.
.
EPB
EPB
EPB
DELAWARE
NED
394215.2N
754229.5W
46
HAINE
AGM
CBM
DIA
D2A
D3A
EHM
MIH
TRM
47 454.0N 69
465557.0N
47 J30.8N
47 749.3N
47 .515.2N
444421.0N
451437.0N
441534.9N
124.01.1
,
68 714.8W
69 556.2W
69 9 8.81.1
6910 7.4W
~72922.0W
69 225.0W
701518.3W
ALLAGASH,ME
CARIBOU,HE
DICKEY,ME
,
D1CKEY(KELLYMTN),~E
DICKEY(BROWNS BROOf(),H~
EAST MACHIAS,HE
'HILO,ME
TURNER,ME
MASSACHUSETTS
Itlux
'F.LR
GLO
HRV
QUA
WES
WFH
42 4 7.0N 7046 4.0W
414260.0N
71 717.SW
42382S.0N.704338.0W
423023.0N
713330.0W
42'2723.9N
72222S.81J
.
4223 4.9N 711919.5W
423638.0N
~7
~
1,52
. 15
712926.0W
180
201
60
87
711523.0W
712743.2W
705341.2W
~72
200
24
DUXBURY,HA
FALL RIVER,HA
GLOUCESTER,HA
HARVARD,MA
aUAIIBIN ,HA
WESTON,MA
WESTFORD,HA
HIT
WEB
HIT
HIT
WES
WES
HIT
BERL.IN,NH
CENTER SANDWICH,NH
DURHAH,NH
WES
WGE
HIT
NEW HAMPSHIRE
~NH 443526.1N
CSNH 434857.6N
DNH 43 721.0N
PAGE 2 OF J
TABLE I caNT.
GHNI+435212.0N
HNH 434219.0N
LANH 433527.6N
HBNH 434337.2N
ONH 431645.0N
PNH 43 343.0N
WBNH433614.4N
WNH 4352 6.0N
71 78.4W
7217 e..OW
712924.0W
711919.2W
713019.9W
72 g~8.9W
71 556.4W
712359.0W
2'0 0
180
2'0 0
2'0 0
2:B0
6 59
200
220
GOE HILL,NH
HANOVER,NH
LACONIA,NH
HOULTONBOROUGH,NH
OAKHILL,NH
PITCHER HTN,NH
WOLFEBORO,NH
WHITEFACE,NH
wGE
wE S
wGE
WGE
MI T
MI T
WGE
MT T
GREEN POND,NJ
LDO
LDO
LDO
LDO
LDO
LDO
NEW JERSEY
GPD
LVNJ
OGD
paN
PRIN
TABN
41 1 3.6N
404834.2N
41 4 O.ON
41 026.3N
4022 0.6N
395is1,.ON
742739.0W
360
7445 5.4W 201
743659.9W ~363
75 5 9.0W 229
7443 4.2W 110
743946.2W
30
LONG VALLEY,NJ
OGDENSBURG,NJ
PAHAQUARRY,NJ
PRINCETON,NJ
TABERNACLE,NJ
NEW YORK
ADN 434960.0N 76
ALF 421331.2N
ALX 441921.0N
APH 435028.7N
BGR 443937.8N
BLH 411946.9N
BHL 4352 4.8N
CLY 4351 4.7N
CROG43541B.ON
CTR 43S226.9N
DANY424530.0N
DBH 411739.9N
DNY 425010.7N
DPL 411510.0N
DWN 424923.4N
EGN 435134.6'N
GOB 411946.0N
GSC 411558.0N
HNY 424954.6N
IPS 4116 2.0N
710.8&11
774749.7W
7SSS40.8W
742949.1W
742243.BW
73571B.OW
7424 7.2W
742656.4W
752445.0W
742735.9W
7350 B.4W
73S829'.9W
7810 7.7W
73S439.0W
7846 1.8W'
742854.6W
73SS19~0w.
74 014.0W
7S3053.4W
735654.0W
13'1
ADAHS,NY
671
ALFRED, NY
122
564
329
134
305
579
244
585
507
27
381
67
0
549
150
110
500
0
HAN
404651 . ON 73S8.25. BW
0
448
HRH 42S021.0N.781423.9W
55
HSNY 44S954.0N 74S143.2W
lOCH 4353 S.4N 743145.6W
701
OSB 412137.0N 735525.9W 212
91
PAL 41 015.0N 735432.9W
PNY 44S0 2.9N 733317.9W
177
PTN 443420.9N 74SS5B.1W 238
SNP 411427.0N 73SB16~OW 30
168
SPS 4118 6.9N 73S326.0W
SRH 411342.0N 74 OSO.(OW 165
STL 411119.0N 74 012.9W 125
261
TBR 41 829.9N 741319.9W
561
UWL 435016.2N 743236.0W
152
WGL 412132.0N 7353S7.9W
LOG
LDO
LIIO
ALEXANDERBAY,NY
AIRPORT HANGAR,NY
BANGQR,NY
BLUH,NY
BLUE
HOUNT A I,N
LAKE,
LBO
LDO
CON*
NY
CRYSTAL LAKE,NY
CROGHAN,NY
CASTLE ROCK,NY
DANNEHORA,NY
DUNDERBURGHTN,NY
DERSAH,NY'
DELLI PAOLI,NY
DOWNHOLE,NY
EAGLES NEST, NY
GOBBELET,NY
GIRL SCOUT CAMP,NY
HAHILTON,NY
HAHHATTAN,NY
MERCHANTSHILL,NY
HASSENA,NY
eVER CASTLE ROCK,NY
OSBORN,NY
PALISADES,NY
PLATT~BURG,NY
POTSDAH,NY
STONEY PT,NY
ST PETERS SCHOOL,NY
SCHERMAN,
NY
STILES,NY
TABLE ROCK,NY
UTOWANALAKE,NY
WEGEL,NY
LDO
LDO
LDO
LDO
LDO
CON*
LDO
CON*
LDO
LDO
CON*
CON*
LDO
CON*
LDO
LDO
LDO
LDO
PAGE 3 OF 3
TABLE I CaNT.
WND
WNY
WF'R
#
422015.0N
442327.5N
411516.7N
74 9 9.0W
735134.2W
7335 8.3W
602
598
152
WINDHAH,NY
WILHINGTON,NY
WARDPOUND RIDGE,NY
LDO
LDO
LDO
801960.0W
795859.9W
75 760.0W
775153.9W
0
0
0
352
BEAVER,PA
ERIE,PA
ABINGTON,PA
STATE COLLEGE,PA
PSU
PSU
PSU
PSU
73 248.0W
73 845.0W
7257 6. OW
7248 3.0W
731052.1W
723740.0W
723624.0W
27
ST.ALBANS,VT
COLCHESTER,VT
FLETCHER,VT
HARLBORO,VT
HIDDLEBURY,VT
HONTGOMERY,VT
HONTPELIER,VT
LDO
LDO
LDO
LDO
LDO
LDO
LDO
PENNSYLVANIA
BVR
ERI
PHI
SCP
4042 O.ON
42 760.0N
40 659.9N
404742.0N
VERMONT
ALV
COV
FLET
MARL
MDV
MGVT
MPVT
444730.0N
443439.6N
444322.,ON
425018.0N
435956.9N
445449.0N
441642.0N
1
8 5
36 6
58 0
1 3 -4
26 2
2 -40
* STATION CODES NOT ALL CLEARED THROUGHNEIC
OPERATORCODE
CON DGS EPG -'
LDO MIT PSU WES WGE -
CONSOLIDATEDEDISON,INDIAN POINT,NY
DELAWAREGEOLOGICAL SURVEY
EARTH PHYSICS BRANCH,DEPT.OF ENERGY,MINES,AND RESOURC£S,CANADA
LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITY
MASSACHUSETTSINSTITUTE OF TECHNOLOGY
PENNSYLVANIA STATE UNIVERSITY
WESTONOBSERVATORY,
BOSTONCOLLEGE
WESTON GEOPHYSICAL ENGINEERS
-'
TABLE II
EARTHQUAKE DATA LIST
NORTHEASTERN UNITED STATES
AND ADJACENT :REGIONS
JULY - SEPTEMBER 1977
,
SOURCEH-TIHE(UTC)
LATITUDE
HR HN SECDEG
01 JUL
*WES
02
NORTHEAST
15 53 19.5
JUt..
,*LDO
1113
03 JUL
*EF'B
*WES
3
3
,ONGITUDE
DEG
'RMS ~MAGNITUDE DEPTH
SEC
NUTTLI
KM
OF CAPE ANN,MA
42.8SN
HAMPTON,NEW
JERSEY
11.6
40.70N
70.06W
.0.45
2.6
74.9.3W
0.17
2.3
LOWERST.LAWRENCE RIVER, QUEBEC
7 35.0
47.44N
70.12W'
0.3
7
1.4ML
2.6
lSR
OR
3.9
3.7
3.3
18R
5
OR
0.15
~.6HL
2.5
t8R
OR
.0.27
1.3
1
20 JUL
LYON HOUNTAIN,NEW YORK
44.66N
74.01W
*LDO 23 26 28.7
O.~3
1.9
OR
27 JUL
*EPB
ST.LAWRENCE RIVER REGION
9 19~55.0
47.40N
70.33W
0.3
1.:»'HL
29 JUL
*EF'B
NEAR LA H~LBAiE,QUEBEC
5 ,34 1.2
47.38N
70.26W
0.1
1.4HL
0.09
2~
OR
29 AUG
SOUTHWEST OF LA POCATIERE,QUEBEC:
*WES
05 23 59.6
47.31N70.15W
0.36
2.0
OR
01 SEP
fIlO. NEW BRUNSWICK
*WES
01 00 57;0
47.15N-
"7
36.'6
47.61N.
70.01W
SOUTHWEST
OF ST.AGATHE,QUEBEC
14 JUL
7 39 30.0
7 39 30.7
7 39 30.3
*EPB
*LDO
*WES
18 JUL
SOUTHWEST
*EPB
22 32 12.:1.
*WES . 22 32 08.Q
19 JUL
*LDO
7
46.09N
46.{)7N
46.06N
74.42W.
74.372
74.41W
0.20
INT IV
1.5
0.36
0.83
OF LA MALBAIE, QUEBEC
47.52N
70.08W
0.8
47.57N
70.33W
LYON MOUNTAIN,NEWYORK
6 12.9
44.65N
73.98W
.;
26 PlUG
*WES
LA MALBAIE, PO
.
2 23 43.6
47.69N
69.88W
66.4,?W
0.83
2.1
OR
02 SEP
PEEKSKILL, NEW,YORK
*LDO
5 S3 56.5
41'.31N
73.92W
0.09
2.4
3
.
02 SEP.
PEEKSKILL,NEW
YORK AFTERSHOCK
.
.
*LDO
13
9 43.'9
41.31N
73.92W
0.02
OR
TABLE II,CONT.
PAGE 2 OF 2
SOURCE H-TIHE(UTC)
HR HN SEt
LATITUDE
DEG
LONGITUDE
DEB
02 SEP
PEEI<SI<ILL,NEW YORK
22 22 59.9.
41.31N
*LDO
73.92W
03 SEP
.*LDO
0
73.92W
03' SEF'
.*LDO
0
RMS MAGNITUDE DEPTH
SEC
.NUTTLI
KH
AFTERSHOCK
'0.03
PEEK9KILL,NEW YORK AFTERSHOCK
-4 21.8
-41.31N.
PtEKSKILL,NEW YORK
8 52.8
41.31N
AFTERSAOCK
0.09
08 SEP
LITTLE OSSIPEE POND, ME
*WES
2359 16.0
43.56N
70.69W
0.75
14 SEp.
it
PEEKSKILL,NEW
6
7.1
dR
0.02
73.92W
*LDO
OR
OR
1.8
YORK AFTERSHOCK
41.31N
OR
73.92W
0.04
OR
17 SEP
HAVERSTRAW,NEW YORK
18 47 12.7
41.20N
*LDO
74.06W
0.05
1
28 SEP
NEAR WILMINGTON, NY
FELT
.. lDO
17 2144.7
44.39N
73.89W
0.10
29 SEP
PEEKSKILL,~EW YORK AFTERSHOCK
*LDO
18 '44 3.0
.41.31N
73.93W
0.07;
*
SOUR.CE
DGS - Delaware
EPB
-
LDO HIT -
PSU
-.
Earth
Geological
Ph~sic:s
Lamorlt-Dohert~
Massachusetts
Pen.f'ls~lvania
Eners~,
Observator~
Ge!;)loSical
Instit.ute
WES - Westort- ObservatoT'w
3
2
Surve~
Branch ,DePt~ot
Stat...
3.1
of
Hines,
arid Resources
Carlada
ot Columbia
U!liversit~
Technolosw
Urliversitw
- Boston
College
'
TABLE III
EARTHQUAKEDATA lI~T
NORTHEASTERNUNITED STATES
AND .ADJACENT REGIONS'
- 'SEPTEMBER.
1977
JUL Y
SOURCE H-TIHE(UTC
HR HN SEC
LATITUDE
DEG
LONGITUDE
DEG -
01 JUL
NORTHEASTOF CAPE ANN,HA
*WES
15 53 19.5
42.88N
70.06W
EP
15
53
29.6
6Okm
244az
G~O
DUX EP
15 53 37.7
107km 213az
WES
WFH
HRV
WNH
FLR
BNH
NSC
UCT
HIM
ECT
EP
"
EP
"EP
EP
EP
EP
EP
EP
EP
EP
.BCT EP
02 JUL
15 53 38.4
117~om 242az
15
15
15
15
15
15
15
15
1S
lS
121~,m' 256az
129km 252az
154~.m 315az
156km 214az
213~,. 333az
214km 224az
215~,m 238az
275~,m, 16az
299km ° 249az.
31Sk.
241az
53
53
53
53
53
53
53
53
54
54
40.3
40.9
44.3
45.1
51.9
51.3
51.2
59. 3
2.0
4.5
RMS MAGNITUDE DEPTH
SEC
NUTTLI
1<11
2.6
0..45
55mu O.4sec
2.67HN
59mu
O~4s.c
2.88MN
10rnlJ
O.3sec
2.42MN
14ml.1
O.4sec
2;45HN
2.3
7
HAMPTON,NEW
~ERSEY
.*LDO
'11 13 21.6.
LVNJ EP. 11 13
LVNJ ES
11 13
paN EP
11 1-3
PQN ES
11 13
PRIN EP
11-13
PRIN. ES
11. 13
GPD EP
1113
.
GPD ES
11 13
-
..
TBR ES
40.70N
25.0
27.5
27.5
31.9
28.9
~3.4
30.2
36.6
11'1342.6
.
74.93W
""I:)
19km
a..~
19km
S2az
36k.m 339az
36i',m 3.39az
41km 1S3az
41km 1S~.z
53km
48az
53i',m
48az
77km
SOaz
0.17
..1~.
03 JUL
-LOWER ST.LAWRENCE RIVER, QUEBEC
*EPB
3 7.35.0
'47.44N
70.12W
0.3
D3A EP
3 7.50.8
82km 118.%
D3A ES
3 8 1.2
82k~
118az
AG" EP
-AGH ES
3
3
7 52.5
8 4'.2
HI"
3
8 55.0
ES
14.. JUL
*EPB
I
,
92Jt..m 115az
92km
11 5az
258km
30.0
46.09N
'
74.42W
~ 39 44.3
90k..
13682
7 39 50.1
126km 196az
7 39~ 50'.5
127km 233az
7 39 57.2
174k~ 194az
1.4HL
18R
41mu
O.15ec
3.00HN
6mu
O.2s.c
2.29HN
160az
SOUTHWEST OF ST.AGATHE,QUEBEC
7 39
HNT EP
MSNY EP D
CTT EP
PTN EP C
CONTINUED
'
OR
1.5
INT
IV
'
3.9
18R
PAGE 2 OF 7
TABLE III.CONT.
SOURCEH-TIHE(UTC)
HR HN SEt
ALV.
COV
ALX
CTR
EP
EP
EP
EP
7 .39'57.8
1 39 59.'6
7 40
4.5
7 40
6.6
7 '40
5.7
7 40
6.7
7, ~O 11.3
740
18.2
7,40,23.4
7 40 28.,7
.7 ~O 37.2
'140 38.4
HPVT EP
HDV EPADN EP
WNH EP
PNH EP
D3A EP
CBH EP
UCT .EP
HNQ EP
ECT
WES
NSC
EMH
18 JUL
*EPB.
D3A
'AGH
AGM
BNH
EM"
:7
40 55.5
14, 2 a z
14 Ba z
2 1 1 a:z
1e 0 a Z
246iO!.m
14 4 a 3
246"'.Jft
1S 6 a Z
252kll
284klfl
2 0 BaZ
343km
13 5 a Z
382km
15 0 a Z
417"'..'",
7 2 aZ
492km
7 6 aZ
504km
~5 9 aZ
6471'..",
3 8 aZ
476i1;.m 17 0 a Z
1801<./fl
195km
229km
4811'..m
5521'..m
563km
7
EP
ES
EP
ES
EP
ES
22- 33 45.8
22 '33 2.0
22 33 #41.2
338km 196az
368km 146a:z
36e"~m 146az
6 12.9
44.65N
73.98W
7 6 19.8
39km
58az
7 6 24.0
39"...
58az
7 6 2~.4
79km 264az
7
-
:7
7
.
6 34.8,
79".m
264az
6 28.2
6 40.5
100km
100".m
206az
206az
.
~~~
EP
23 '26. ~3.8,
101ka
2()Saz
23
101km
205a%
- 26
46.1
,0.4sec
O.Ssec
.0.4sec
0.4sec
3.56M~
3.21MN
3.12MN
3.41MN
2.6HL
BR
O.lsec
2.62HN
O.3..c
2;41HN
0..27
1.3
1
0.'5:3
1.8
OR
ST.LAWRENCE ~IVER REGION
*EPB
919'55.0
47.40N
70.33W
D3A EP
9 20 10.8
94ka 111a%
AGH EP
ES
CONTINUED
~'A
~
9mi.J
3.16MN
-
EP
'21,JUL
. AGtt
132mu
72mu
37mu
62mu
O.5sec
LYON HOUNTAIN,NEW
YORK
20 J, UL
l YON; MOUNTAIN, NEW YORK
*L EI0
23 2:6 28.7
44.66N
74.01W
p NY
EP
23
26;-"
34".9
4Dkm
62az
ES
23 26 39.8
40"..'"
62az
p N' Y
c 0 v EFt 23 26 40.1
69km
97az
c 0 V ES
23 26 48.6
69"..'"
97az
p T N EP
23 26 41.3
,77k",
262az
23 26 40.8
,- 77kID
262az
f' T N. EP
UW\ L
UW L
61mu
SOUTHWEST OF LA MALBAIE ',QUEBEC
22 32 12.1
47:S2N
70.08W
0.8
EP
22 32 26.0
84"..m 124az
EP 22 32 27.6
93"..m 12.1 az. 103mu
ES
22 32 41.1
931-..m 121az (
ES
'EP
EMM ES
19 JUL
*LDO
PNY
. PNY
PTN
PTN
UW~
UWL
LATITUDE LONGITUDE RHS HAGNITUDE DEPTH
DEG
DEG'
SEC NUTTLI'
"H
9 20 12.5
9 20 .25..1
10Sk~
105~"D'I.
109az
109~z
f.5HL
0.3
't8R
.
41",1.1
O.1-.ec
3.04/1N
PAGE 3 OF 7
TABLE IIl.CONT.
SOURCE H-TIHE(UTC)
LATITUDE
LONGITUDE
DEG
DEG.
HR HN SEC
CBM
CBM
28 JUL
*EPB
D3A
D3A
AGH
AGH
EP
ES
9 20 23.7
9 20 43.5
175~.1T'
175"..1T1
106-.z
1068%
F;'t1S MAGNITUDE
SEC
18m!..1
ES
5 34 26.7
EP
5 34 18.0
ES
5 '34 29.7
88"..m
99"..m
99"..m
0.1
TRH. ES
EHH
HIH
HIM
KM
2.41HN
05 25,36.4
109az
339-1<.m 181az
PEEKSKILL, NEW YORK
5 53 56.5
41.31N
73.92W
GOB IP D 5 53 56.9
1km
5az
SPS IP t
5 53 57.1
3"_m 113az
BLHIP
C_5 ~~ 57.2
3!1:.m 305az
CONTINUED
1aR
21mlJ
O.lsec
2.70HN
2.1
OR
109az
NO. NEW BRUNSWICK
0100
57.0
47.~15N.
66.47W
EP
01' 01. 17 ~4
128klft
259az
ES - 01 01 34.4
128~.m 259az
EP
01 01 26.9
194km
268az
ES
Od' 01 52.2
194km
268az
.£5
01 01 55. 3
205~.m- 268az
EP'
01 01 43.4
280km
196az
ES
01 02 16.1
280~.m 196az
EP
01 01 ~3C? 7
290",m 224az
ES
01,02 21.4
290km
224az
02 SEP
*LDD
1.4ML
111az
0.09
71TIlJ
O~lsec
2.24HN
3ml.J
O.2sec
1.90MN
2.0
OR
O.ls~c
2.5SMN
O.3sec
2.06HN
1mu
O.2sec
O.2sec
'1 .84MN
1.72MN
0.83
10mu
2.1
O.2sec
OR
2.27MN
5ml.1
O.lsec
2.38HN
:3-mu
O.2sec
2.05MN
2mu
O.2sec
1.84MN
29 AUG
SOUTHWEST OF LA POCATIERE,QUEBEC,
*WES
05 23 59.6
47.3.1N
70.15W
0.36D3A EP
05 24 13.1
78k.m 10raz
D3A ES
05 24 22.8.
78k.m 107az
AGM EP
05 24 14.4
89k.m 106az
15mu
AGH ES
05 24 25.2
89~,m 106az
CBM EP
05 24 25.4
159~,m 104az
7mlJ
CBH ES
05 '24 43.3
159~,m 104az
CBM ES
05 24_4~.3
159km
104az
HIM ES'
OS 25 10.2
244km
159az
2mlJ
AGH.
D3A
EHH'
O.3sec:
DEPTH
NEAR LA HALBAIE,QUEBEC
5 34 1.2
47.38N
70.26W
EP
5 34 16.5
88"..m l11az
26 AUG
LA MALBAiE, PQ
*WES
~ 23 43.6
47.69N.
69.88W
D3A IP C 2 23 58.0
85klTl 140az
D3A ES
2 24 8.5
85kITI 140az
AG" 'EP
2 23 59.2
93j(.1TI 135az
AG" ES
2 24 10.5
93klTl 135az
CB" EP
2 24 9.7
157k.1TI 121az
C&" ES
2 24 29.0
157k.m 121az
01 SEP
*WES
CBH
CBH
AGH
NUTTLI
0.09
2.4
3
PAGE
'TABLE III,CONT.
SOURCE H-TIHE(UTC)
LATITUDE
'HR HN SECDEG
5 53 57.4
5 53 57.5
5 53 57.5
5 53 58.2
D. 5 53 58.0
5 53 58.6
5 ~3 59.3
EP
IP D 5 ~4 1.3
5 54 4.6
ES
5 54 1.6
IPD
5 54 ~.4
ES
IP D 5 54 2.1
5 54 5.5
ES
EP D 5 54 4~7
5 54 10.6
BCT' ES
5.6
GPD .IP D 5 54
5 54 12.1
GPD ES
IP D 5 54 8.2
ECT'
5 54 16.4
ES
ECT
554 11.1
LVNJ EP
5 54 16.2
HDM EP
5 5430.4
ES
HDK
EP D 5 54 21.2
UCT
5 54 38.3
ES
UCT
DBH
OSB
IPS
IPS
GSC
SRM
STL
WPR
WPR
TBR
TBR
PAL
PAL
BCT
02 SEP
*LDO
GOB
GOB
BLM
BLH
DBH
DBH
09B'
OSB
IP
IP
IP
ES
IP
EP
13
Ep
E:S
EP
ES
EP
e:S
E:p
ES
D
D
D
LONGITUDE
DEG
9
9
9
9
9
9
9
9
44.2
44~5
44..5
44.9
44.7
45.4
44.8'
45.5
GOB
GOB
OSB
OSB
SRH
SRM
CHR
CHR
244az
Oaz
411:.m
51t..m
51t..m
511:./JI
BIt..m
1211:./JI
1.511:./J1
2911:.m
2911:.m
31 It../JJ
31 It..m
34km
3411:.ltl
491t..m
49km
5511:.m
551t..m
721t_m
721t_m
891t_m
1181t..'"
118km
1511t.m
l:j 1 lI:.m
201az
201az
232az
21Baz
205az
l00az
102az
232az
232az
177az
177az
65az
65az
2348Z
234az
36az
'36az
23.1"az
BOaz
80az
67az
67az
107mL
15ml.I
1
1"..m 355az
3:"..m- 303az
,3:k.m 303az
5ilt;.IT. 24;7az
~ik.m 2478Z
~,k.m 356az
~,fI:.m 356az
PEEKSKILL,NEWYORK
02 SEP
22
22 59.941.31N
*LDO
EP .22
ES
22
EP
°22
ES
22
EP
22
ES
22
EP
22
ES
22
23 0.1
23 0.4
23 0.7
23- 1.4
23 ~.O
23 3.4
23 2.5
23 4.6
7
RMS MAGNITUDE DEPTH
SEC
NUTTLI
KM
PEEKSKILL,NEW YORK AFTERSHOCK
0.02
9 43.9
41.31N
"..m73.92W
355az
13
13
13
-~13
~13
13
13
13
4 OF
.
AFTERSHOCK
73.92W
0.03
0.8..C'
2.41.MN
o.
2.65MN
set~
OR
OR
1,",.111 Oaz.
111:.m Oaz
5".m 358az
5km 358az
12km .219az
12J1:.m219az
.27J1:.m245az
2711:.m245az
PEEI<SKI~L,NEW YORK AFTERSHOCK
03 SEP
73.CJ2W
0.02
41.31N
*LDO
0 4 21.8
CONTINUED
OR
PAGE ~ OF
TAEtl_E I I I, CaNT.
SOURCE H-TIHE(UTC)
HR 'HN SEC
GOB
GOB
DBH
DBH
OSB
OSB
SRH
EP
ES
EP
ES
EP
ES
ES
03 SEP
*LDO
. GOB
GOB
DBH
DBH
OSS
OSB
SRH
0
0
0
0
0
0
0
LA.T1rUDE lONGITUDE
DEG
DEG
4
4
4
4
4
4
4
2 2. .1
2 2. ,3
2 2. .6
., 3. .2
...
2 2. .7
2 3. .~
2 5. .4
PEEKSKILL,NEW
0
£p
£s
Ep
Es
Ep
Es
Es
1 k.IT.
1 11:,m
4 k. m
4 k IT.
5 k. IT.
5 JI.. m
12 JI.. m
.
8 54.3
0
0
8 53.7
8 54.5
0
8 56.3
Oaz
Oaz
245az
245az
358az
358az
219az
AFTERSHOCK
73.92W
0.09
lkm
354az
1k.m 354az
51;:.1T1245az
5 1;:.
ITI 245az
5k.m 356az
5"..ITI 356az
121;:.1T1 219az
YORK
8 52.8
41.31.N
0 8 53.1
0 8 53.3
0 8 53.8
0
RMS MAGNITUDE DEPTH
SEC
NUTTLI
KM
08 S.EP
LITTLE OSSIPEE F'OND, ME
0.75
*WES
23 59.16.0
43.56N
70.69W
WBNHEP
23 59 22.0
33k.m 279az
WBNHES '23 59 25.6
33k", 279az
'GHNH EP
23 59 24.7
49k", 315a:z.
GHNH ES
23 59 30.2.
49km 315az
MBNH EP
23 59 25. 6
54~,m. 290az
MBNH ES .23.59 31.5
.S4km 290az
LANH EP .23 59 27.3
65k.m 273az
LANH ES
23 59 34.5
6Sk.m 273az
CSNWEP
23 59 27. 9
6B~,m 295az
,.cSNH ES
TRM
TRM
HNH
. WES
WES
MIM
EP
ES
ES
EP
ES
ES
HDM ES
i
EMM ES
ECT ES
. ECT
ES
23 59 35.3
-23 59
23 59
23.59
23 59
23 59
24 0
31. 0
41~O
54.3
38.1'
56.6
20.8
.
68",m
0',32.8
275~,m
24
0 38.3
287~.m
24
0 36. 4;
294~_m
-.
24
O. 40.6
294~,m
1.8
OR
295az
B5~,m 23az
85km
23az
130",m 277az
140l',m 201'az
140km 201az
229~,m 34az
-24
OR
Smu O.3sec
1~76MN
2mu
O.2sec
1.93MN
;.!mu
2mlJ
O.2sec
2.02MN
1.73MN
213az
61az
230az
230az
14 SEP
PEEKSKILL,NEW YORK AFTERSHOCK
*LDO
11 6 7.1
41.31N
.73.92W
0.04
.GOB EP
GOB
BLM . ES
Ep.
11
11
11
6
6
6
7.4
7.6
7.6
1iO!:m 5az
lJt..m 305az
5az
3k.m
BLM ES
OSS EP
CONTINUED
11
11'
6
8;0
7.9
3k.m 305az
5Jt..m Oaz-
o. :3sec
OR
PAGE 6 Of
TABLE III,CONT.
SOURCE H-TIHEtUTC)
HR HN SEC
ass ES
GSC EP
.GSC ES
17~'SEP
*LDO
STL
SRH
GSC
CHR
CHR
TBR
TBR
6
6
6
11
11
11
-
LATI~UDE
DEG
8.6
8.5
9.6
LONGITUDE
DEG
RMS MAGNITUDE DEPTH
SEC '-NUTTlI
KM
Oaz
232az.
232az
5"..m
Bj(.m
8km
HAVERSTRAW,NEW YORK
18 47 12.7
41.20N
74.'O6W
EP
18 47 13.5
4!o!.m 107az
EP
18 4.7 13.5
4!o!.m 49az
EP
18 47 14.2
8!o!.m 318z
EP
1'8"47 12.9
1.3!o!.m
273az
£5
18 47 13.1
1 :3",",
273az
EP
18 47 15.2
15j1,m 244az
ES _18 47 17.3
j.~;k.1TI
244az
0.05
28 SEP
NEAR WII,..MINGTON, NY
FELT
*LDO
17 21 44.7
-44.39N
73.-S9W
0.10
BGR
PNY
COV
MDV
CTR
FLET
EP
EF'
EP
EP
EP
,EP
17
17
17
17
17
17
PTN iP
HNH...'~P
'ALXEP
OTT EP
MARL EP
BNH
~..,
8.5
"17
17 2~
22' 19.3
20.3
BCT EP
NSC
MIM EP
EP
17 22 21.8
~172225.8
17 22 26.2
17 22 27.5
.
17 22 31.8
1722
17 22 35.5
40.1
17 22 53.5
9az
'Z46az
1498-..1tt 120az
162km :268az
182"..'" 308az
193km 152az
210".."
82az
227"..m
121az
228km
247k.1T1 185az
149az
279k.lTf 119az
286"..m 172az
290km
91az
324"..m 172az
363"..m
395km 152az
74az
510km
83az
133km
75",1."
O.2sec
3.39MN
55", 'J
O.2sec
O.2sec
O.3sec
O.2sec
O.2sec
O.2sec
3.26HN
3.23MN
3.27MN
3.19MN
3.41MN
2.83HN
45mu
63mu
37mlJ
5S",u
11 mlJ
29 SEP
PEEKSKIlL,NEW YORK AFT.ERSHOCI<
*LDO. 18 44 3.0
41.31N
73.93W
0.07
BLM EP
'"
17.22
ONH
WND. EP
EP
EMM EP'
,;.
5.4
i 17 22 17.4'
DNH .EP
ECT EP
TRH EP
283az
125km
6.0
17 22 9.9
17 22 13.2
17.22 14.6
-
89"..m
102"..m ,311az
17 22
IPS
EP
OSB EP
OSB ES
CONTINUED
18 44
18 44
18 44
18 44
. 3.7
3. 9
~.O
4.7
:1
~
1.0
17 22
,3.1
49~.m 3°.eaz
56k.m
28az
62k.m
70az
71".m . 127az
73"..1T1218az
83kITI 63az
17 22
EP
QUA EP
.
54.6
53.8
54.7
55.9
56.3
58.0
17 21 ~. 0
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.~ .:~.'1T:."~':"!:"
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.
21
21
2.1
21
21
21
1
3~,m 309az
5~,rrl '200az
5kin
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5~,m
laz
2
TABLE lIl,CONT.
SOURCE
H-TIME(UTC)
'AGE
LAT:tT~DE
.
HR MN SEC
SNP
SNP
SRM
SRH
CHR
CHR
*
EP
ES
E:P
ES
:EP
£9
SOURCE
DGS EP9 LDO HIT PSU -
1S
18
18
18
16
18
Delaware
44
44
44
44
44
44
4.
.5
~t :6
S. i
6. :5
5. 7
7. '...
"
Geological
Earth
Ph\:lsics
Lamont-Dohe"t~
Hassachllsetts
F'~nn$\:Ilvania
RMS KAGHITU1'E n£~.1~M
lONGITUDE
DEG
DEG
L:;/-:.m
8/-:.111
11 ~.ITI
11/-:.1T1
27k.1T1
27k.1T1
t1f
SEC
NlITTU
KM
20~az
~O5.:z'
218az
218az
245az
245az
Surve~
Brarlch,Dept.of
Energ~,J1ines,arld
Res,ol_frces
Car,ada
Geological
Observatorwo-f
ColIJfI',bia
Universit~
Irlstitllte
of T~chrlo1.og~
State
WES- WestQn Observator!:l
Unjversit~
- Boston
,
Col1e$e
TABLE IV.
FORE SHOCKS,
AFTERSHOCKS,'
.
DATE- ARRIVAL-TIME
01
0' 9
110
12
17
1
2,6
7
,3 1
21
23
2.3
25
.,
...
6,
.,
... 6.,
... 6
28
, 30
02
0: 2
0 ")
.:..
0:?~
\0: 3
0: 3.
O.4
0: 5
'0 8
1 1
-1 2
14
18
, ~
.. 8
2,8
.,
-
.,
...
J u,l..
J uLJ u l..
Ju L
.Ju.,L
Ju L
.Ju L
Ju L
Ju L
Au G
Au G
Au G
AU G
Au G
Au G
Au G
Au G
AU G
SE p
5 E, p
SE p
SE p
SE p
SE p
S E, p
SE p
5E p
5 F;.p
'5 E p
5Ep
SE p
5 Ep
S Ep
1 8 19
1 S l' 8
00 1 9
0 5 :3 220.47
1 3' 0 7
1-8 3 0
12 1 0
10 5 0
2 1.5"5
03 5 6
'1 1 4 0
17 9 0
j J 1 2:
0 () 4 7
1 "71 3
212 5
1.5 0 0
10 0 0
00 5 3
00 ~ 4
014 0
0 fl 5"0
011 9
04 1 8
14 3 0
0 0 5"0
11 5 0
15 5 1
.
0 7 1 ].
0 6 1 604 0 6
05 0 9
0 '5 1 4
ST$TION
c TiR
c TR
p NY
CT,R
NE,D
CT R
NED
CT R
CT R
Cr R
c.T R
CT R
CT R
c 1. R
c T' R
c 1:;R
c T,R
cT~
c T:R
c TR
",
AND
H rCRO-EARTHQUAKES
MAGNITUDE
::: 1
::: '1
1.9
< 1
< 1
< 1
< 1
<" 1
(!
1
<1
< 1
< 1
':::. 1
< ,1
.::: 1
.::: 1
"::: 1
LOCATION
P£E:KSKILL,NY
BLUE MOUNTAfN LAKE1NY
BLUE MOUNTAIN LAKE,NY
NEAR PLATTSBURG, NY
~LUE 1'tOUNTAIN LAKE,NY
NEWARK,DELAWARE
BLUE MOUNTAIN LAKE.NY
NEWARK,DELAWARE
BLUE MOUNTAIN LAK!:.NYBLUE MOUNTAIN LAKE,NY
BLUE,
MOUNTAIN
LAKE ,.NY
BLUE MOUNT~IN
BLUE MOUNTAIN
BLUE 'MOUNTAIN
lAK~,NY
LAKE,NY
LAKE,"""
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
LAKE,NY
LAKE,NY
LAKE,NY
LAK£,NY
lAKE,NY
LAKE,»Y
LAKE,NY
MOUNTAIN
MOUNTAIN
MOUNTAIN
MOUNTAIN
MO~INTAIN
MOUNTAIN
MOUNTAIN
CT~
CTR
< 'I
< 1
f'EEKSKILL,NY
BLUE! MOUNTAIN
BLUE- MOUNTAIN
PEEKSKIu. " NY
CTR
(
BLUE MOUNTAIN LAKE,NY
1
PEEKSKILL,NY
PEEKSKILL,NY
CTR
CTR
CTR.
CTR
CTR
< .1
< 1
< 1
<-;
~ .1
~LUE
BLUE
BLUE
BLUE
BLUE
.
f
-
LAKE, NY
LAKE, NY
.
MOUNjAI"'-LAKE,NY
MOUNTAIN LAKE;NY
MOUNTAIN LAKE,NY
MOUNTAIN LAKE,NY
MOUNTAIN LA~E,NY
TABLE V
SllSPECTED ANti POORLY LObAT~t)9ARTHQUAK£S
NORTHEASTERNUN1TED STATES
()ND ADJACENT REGIONS
JULY
...SEPTEMBER
~977
RMS HAGN1TUnE DE~1#
ATjOTUDE LONGITUDE
SOURCE H-TIME{UTC)
HR MN SEC
DEG
SEt
DEG
NUTTLl' K"
09 JIJL
NEAR LAKEVJLLf~, NEW Bf~UNSWICI<
*WES
15 1..3 7.2
46.26N
67.73W
0.28
CBH
EP
"
CBM ~S.
..15 13 20.9
15; 1~ 3cO.2
.. r ~
;15 "13
D3A
ES
ES
ES
'-1,1'1
"
E~
03 AUn
*WES
D3A
D3A
ARM
AGM
.,. AIl.JG
* uE C
.J
n ~5,
A
D 3,A
It: G M
PI GiM
c BM
C It M
M1 M
E fitM
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~.
80Jl:.1T1 33Baz
BO/{.m 338'BZ
15 13 48.0
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143j{.1ft 3'10'BZ
1 1::"~,
?~ 2
.
1513
170~.m 17~.,"
~"..,
~
.J...!',m...,.
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NEAR LA POCATIERE,QUEBEC
91"..111
91i';.m
101~..nl'
101km
172~..m
172"..m
255",ITI
364~.rri
109az
109az
107~z
107az
105az
105-.z
157az
142az
EP
23 30 12.8
23
30
EFt.
EP
ES
EP
30 14.7
30 26.5
30 45.3
Eft \
23
23
23
2 '7
W
ES
"
23 31.10.4
ES
23
3 vA
3'()
23.0
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~..38.7'
.
86J.-,m 107az
86~:.m 107az
96k.1T1 106,s'Z
1671<.m 104a:z
1671<.1T1iO4~z
~C:: O I,
',J
"'.ITI
157az
250~.1T1
157az
2:::iOlt..m 157az
5ffiU
841T11J
4 JTJ
'..
.
6ml.
0.64
6/JII.J
5ml.J
lit I..!
16 SEP
NORTHWEST(jfBAIE
ST.PAUL,QUEBEC
*WES
20 40 45~7
47.56N
70.62W
0.65
D3A EP
20 4.1 5.2
121"..lTt 114az
D;5A ES
20 41 23.0
121J-;.m 114az
,
AGM
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CONTI &oU'ED
"0'\.1
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.
204:1;;,~,.~*
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131"..m
1.1Jaz
.1 ..
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7ml,j A~. i $.~
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49 46.4
49 4:9.4
4948. 2
49 50..7
49 58. 9
50 21.3
50
9.4
50 22.3
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ST.~~WR~NCER.IVER,QUE~EC
1.04931.9
4?37N
70.30W
16
16
16
16
: 16
16
16
16
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~~.ITII.J
00.
EP
EP
EFt
EP
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ES
EP
EP
,
0'
OR
lt76MN
.
Of 40 40.6
47'. 40N
70.96W
EP
01 40 53.3
75,",.1T1116az
ES . ()1 41
2.6
75kITI J:16az
EP
01 40 55. 0
~~k./JJ lJ~az
£9
01 41
5.5
85,",.ITI 113,az
30 A UG 23 WEST
POf;ATIEF:E .,QUEBEC
29 58.0OF LA 47.33N
*WE S
70.25W
D3 A
II 3 A
A GH
C9 M
CB H
M.t M
M.1H
M1:M
3m/.J
~
16mu
lt79MH
2.31MN
2.1
OR
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2.10HN
OR
OiBsecC
2.44MN
o.,..~
2.08MN
~c~
v~~..~
1 "'.e7HN
OR
.
1~B
O.lsEC
0.4s&c
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~9
().;3$~(:
2.i~~
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1.60MN
OR
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..
ABLE
V
,.CQijr..
PAGE
$DURCE H-TIME(UTC)
LATITUDE
HR MN SECDEG
CBM
CBM
Hl:tt
25 SEP
*LDO
2c<J41 16.:8
20 41 43.2
~ 7 .~.
~
~o ;4 ~
~
:e:p
&:6
.c
E~
ONGITUI;IE
DEG
201k.m
201 k.IJI
284Jt..1T1
iQ98Z
l()~az
154.%
RKSMA6NITUDE
SEC
2 58 13,0
74.0BW
9Jt,m 121az
14k.m e2~z
WGL.
ES
2
14km
CHR
EP
2 5B 13.0
D9M EF'
WGL EP
9.9
41;34N
2 58 11.9
5$
.14..1.
19k.m
NUTTLI
lte:P'H
KH
2.u
0 . set
.81i'tN
2ml.
O,:3$.~
.62MN
JONESPO1NT,NEW YORK
2 58
::~ OF
~.39
OR
~~.~
41~.~
* SOURCE
,
DGS - Delaware
Geolosical
Survew
EPB - Earth Ph~sics: Brar,ch,Dept.of
Ene"'.-wrHines,arld
Resources
Can.o,
-LDO - Lamont-:Dohert~
Geoloaical
Observator~
of Columbia
Unlver$it~
I1IT - Massachusetts
Irlstitute
of Techrlolo~Y
PSU - F'enns~ivarlia
State
Urfiver$it~
WES - Weston Observat.oY'~
- B()ston Colle~e
INTERNAL DISTRIBUTION
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15
Dr. E.F. Chiburis
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Mr. R.O. Ahner
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Dr.
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Chief,
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and Files,
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Lamont-Doherty
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Dr.
Shelton
S.
Alexander,
Pennsylvania
State
Geological
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University
5
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Ken t~oodruff,
Delaware
5
Dr.
Peter
Earth
1
Consolidated
15
Dr.
Paul
Basham,
Edison
Pomeroy,
Coordinator
of
Physics
Canada
llew York
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Branch,
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and