of 69
United
States
Department
of
the
Interior
U.S.
Geological
Survey
Estimation
of
Strong
Ground
Motions
from
Hypothetical
Earthquakes
on
the
Cascadia
Subduction
Zone,
Pacific
Northwest
by
Thomas
H.
Heaton
and
Stephen
H.
Hartzell
U.S.
Geological
Survey
Open-File
Report
86-328
This
report
is
preliminary
and
has
not
been
edited
or
reviewed
for
conformity
with
Geological
Survey
standards
and
nonemclature
U.S.
Geological
Survey
525
S.
Wilson
Ave.
Pasadena,
CA
91106