The current, wind stress, and bottom pressure
observations collected as part of the Hudson Shelf Valley winter
experiment are presented as an animation. All time-series data in
the animation were low-pass filtered to remove the tidal motions
and to emphasize the wind-driven events. The wind stress and currents
are shown as an arrow that originates at the station location and
points in the direction of the current flow. The water depth at
which waves were sufficiently strong to resuspend sediments was
calculated from the Ambrose Tower wave data: areas shallower than
this critical depth are shaded brown in the animation. An inset
in the upper corner of the animation shows the difference between
low-passed sea level at Sandy Hook and bottom pressure at Station
C as a proxy for the offshore pressure gradient (Barometric pressure
measured at Ambrose Light tower was added to sea level elevation
at Sandy Hook to obtain bottom pressure comparable to that measured
at Station C). Bottom pressure (minus the mean) is also shown at
Sandy Hook and Station C as a pink bar.
file containing data used to create this animation is included
in this data report. The mercator projection was created using Rich
Pawlowicz's M_Map toolbox package available at www2.ocgy.ubc.ca/~rich/#M_Map.
Individual frames were created as ppm files using programs
included on the Matlab m-files
page; frames were assembled into the final animation using Videomach
software available at www.gromada.com/VideoMach.html.
NOTE: This animation is in .flc format. A reader,
such as Quicktime, which can open files of this type is required.
Quicktime may be downloaded at www.apple.com/quicktime/download/.
For more information on .flc movies, see The
FLI/FLC Animation Format (woodshole.er.usgs.gov/operations/modeling/flc.html).