maximum wind that is moving perpendicular to a shoreline with a speed of
15 MPH. This nomogram indicates there is a critical storm size as reflected by the radius of maximum winds, R. For a given pressure drop greater
than zéro, the highest peak surge is produced for a critical value of R
equal to 30 miles and any value of R greater or less than this value
results in a lesser value of the peak surge.
A second factor
given in Figures 3-52 and 3-53 adjusts for the
effects of variations in bathymétrie characteristics along the gulf and
Atlantic coasts. A third factor Yy given in Figure 3-54, adjusts for
the effects of storm speed and the angle with which the storm track
intercepts the coast.
The predicted peak storm surge Sp is then given by
S„ = Sr Fç F.,
p
1 o M
(3-78)
Jelesnianski (1972) applied the scheme to the 43 storms given by Harris
(1959) that entered land south of New England during the period from 1893
to 1957. The peak surges reported by Harris are plotted against the peak
surges predicted by the nomograph method in Figure 3-55. The twodimensional hurricane model and storm surge prédiction model described by
Jelesnianski (1967) was used for ail calcualtions without adjustment for
local variations in friction coefficient or other efforts to calibrate
the model for individual storms. For many of the hurricanes, the poststorm surveys conducted were of limited scope and probably did not disclose
the true peak surge. Thus, at least a part of the spread between observed
and computed values must be due to the observed data. In addition to the
peak surge, other nomograms for computing other storm surge parameters are
given by Jelesnianski (1967).
An example problem illustrating the use of the nomogram method follows
**’*********♦* EXAMPLE PROBLEM **************
GIVEN: Parameters for Hurricane Camille are:
△P = 3-19 inches of mercury (in. Hg.)
Vp = 13 knots
R = 14 nautical miles (n.m.)
—: Estimate peak open-coast surge produced by Hurricane Camille.
3-120
15 MPH. This nomogram indicates there is a critical storm size as reflected by the radius of maximum winds, R. For a given pressure drop greater
than zéro, the highest peak surge is produced for a critical value of R
equal to 30 miles and any value of R greater or less than this value
results in a lesser value of the peak surge.
A second factor
given in Figures 3-52 and 3-53 adjusts for the
effects of variations in bathymétrie characteristics along the gulf and
Atlantic coasts. A third factor Yy given in Figure 3-54, adjusts for
the effects of storm speed and the angle with which the storm track
intercepts the coast.
The predicted peak storm surge Sp is then given by
S„ = Sr Fç F.,
p
1 o M
(3-78)
Jelesnianski (1972) applied the scheme to the 43 storms given by Harris
(1959) that entered land south of New England during the period from 1893
to 1957. The peak surges reported by Harris are plotted against the peak
surges predicted by the nomograph method in Figure 3-55. The twodimensional hurricane model and storm surge prédiction model described by
Jelesnianski (1967) was used for ail calcualtions without adjustment for
local variations in friction coefficient or other efforts to calibrate
the model for individual storms. For many of the hurricanes, the poststorm surveys conducted were of limited scope and probably did not disclose
the true peak surge. Thus, at least a part of the spread between observed
and computed values must be due to the observed data. In addition to the
peak surge, other nomograms for computing other storm surge parameters are
given by Jelesnianski (1967).
An example problem illustrating the use of the nomogram method follows
**’*********♦* EXAMPLE PROBLEM **************
GIVEN: Parameters for Hurricane Camille are:
△P = 3-19 inches of mercury (in. Hg.)
Vp = 13 knots
R = 14 nautical miles (n.m.)
—: Estimate peak open-coast surge produced by Hurricane Camille.
3-120