Charles N. Flagg E-mail: Charles.Flagg@stonybrook.edu
Robert E. Wilson E-mail: Robert.Wilson@stonybrook.edu
School of Marine and Atmospheric Sciences
Stony Brook University Stony Brook, NY 11794-5000
The Great South Bay Project
The goal of the Great South Bay program is to gain a thorough
understanding of the
biogeochemistry of the Bay and its effect on pelagic and benthic
communities. Currently this effort is supported by the NY
Department of State in which observations and models
are combined in support of the development of an ecosystem based
management approach to address the ecological problems besetting the
Bay. This webpage shows some of the hydrodynamic model results to
date and presents physical observational data collected over the
past several years. Currently, the hydrodynamic model is
undergoing a major upgrade so as to deal more effectively with the
complex topography of the western portions of the Bay. The model
results presented below deal with one aspect of the Bay, that is the
potential impact of a large breach in Fire Island. The model is
being used to study the impact of tides and winds on the distribution
and dispersal of passive tracers and plankton. This page
also presents much of the observational data from temperature and
salinity sensors that have been deployed around the eastern portion of
the Bay since 2004. Since 2010 some of these instruments have
been enhanced to measure sea level, chlorophyll and turbidity.
And since the middle of 2010 real-time data from the Smith Point bridge
and a telemetering buoy south of Sayville have also become
available. All the observational data are available below.
Hurricane Sandy and breaches at Old Inlet, Coast Guard Cut, and Moriches Inlet
Real time data from the Bellport dock is presented below in the Great South Bay Observatory section.
Sandy caused significant over washes and three breaches in Fire Island
in the area between the historic Old Inlet area and Moriches
Inlet. Aerial video and photos were obtained Saturday, November
3rd, 5 days after the storm's passage. A short description and
photos of the breaches is available here while youtube videos are listed below.
Another weekly aerial
survey of the
inlet was carried out on Sunday November 18th which showed that the
sand island connecting Pelican Island to Fire Island had been cut by a
new channel to the west. A series of photos showing the evolution
the inlet is given here.
On Saturday December
1st there was a meeting at Bellport's community center to discuss the
breach in the Old Inlet area. A power point presentation given
at that meeting shows how the dynamics of the Great South Bay and the
ocean resulted in the formation of the breach and how the breach has
affected the tides, wind driven storm surge and the salinity of the
eastern end of the Bay.
A follow-up meeting on
the developments of the breach, now referred to as New Inlet, took
place on March 23rd at the Bellport Middle School. Charles Flagg gave a power point presentation to the meeting
attended by about 500 people to hear position reports from the FINS and
the NYDEC, and presentations by Charles Flagg, Kevin McAlaster and Joe
A series of reports on the breach development are listed below.
December 14, 2012 report on the new inlet
November is available here.
On January 5, 2013 another aerial over flight took place and a photo summary of the evolving breach at Old Inlet to the present is available here.
January 14, 2013 report on the inlet that goes through December is available here.
The January 30th report on the status of the inlet is available here.
The February 27th report on the bay and inlet with new bathymetry of the inlet is here.
The March 15th report on the inlet and the impact of east-coast wide water level fluctuations is here.
is the series of aerial photos of the New Inlet from the south looking
north across Fire Island. The aerial photography has been a
community effort with pilots Rich Giannotti, Don Richards, Charlie
Flagg and Vinny Petruso and photographers Charlie Flagg, Mike Ferrigno,
Rich Weismann, Justin Flagg, Brian Wasser, Jamie Shreeve and John Vahey.
Nov 3, 2012 (CF&RG)
Nov 11, 2012 (CF&RG)
|Nov 20, 2012
|Dec 20, 2012
||Jan 6, 2013
||Jan 27, 2013
||Feb 2, 2013
|Feb 14, 2013
||Mar 10, 2013
||Mar 29, 2013
||Apr 4, 2013
|Apr 17, 2013
||Apr 18, 2013
||May 12, 2013
Mark Lang's help a series of overflights of the New Inlet have
produced detailed photo mosaics of the
inlet and back bay area.
|Mar 29, 2013
||Apr 17, 2013
||May 12, 2013
Great South Bay Observatory Data Collection
Location of Observatory Components
Data are being collected from eight stations on the Great South Bay
instruments measuring temperature and salinity. The stations include,
from east to west on the north shore:
Point, Bellport, Blue Point, Islip and Tanner Park, and the US Coast Guard Station and
Barrett Beach on Fire Island. The
instruments are deployed for as much as
three months at a time, less in the summer due to heavy biofouling.
SBE 16 Plus
SeaCat with WetLabs FLNTUS
In addition to the delayed-mode SeaCat data, meteorological data are being collected from the south tower of the Smith Point bridge and these data are available in real time below. That data includes temperature and salinity from the Smith Point SeaCat, short and long wave radiation from Eppley pyronometers, and wind speed, wind direction, air temperature, humidity, barometric pressure and rainfall rate from a Vaisala WXT520.
On October 6th, 2010 we deployed GSB #1 buoy south of Sayville at 40o 41.6'N, 73o 05.1'W. This buoy reports wind speed and direction, air temperature and humidity, photosynthetically active radiation (PAR), water temperature and salinity, chlorophyll-a fluoresence and turbidity. On December 29, 2010 ice forming in the Bay carried the buoy quite a ways as the ice sheets broke up and started to move around. The ice finally released the buoy south of Islip in mid-February at which time we towed the buoy to the West Sayville Marina on February 17th. After checking on the systems and repainting, the buoy was towed out and re-anchored near its original location, 40 41.552 N, 73 5.144 W, on March 23, 2011. The winter of 2011-2012 was particularly mild and we did not have any trouble with ice flows but significant ice build up in January 2013 captured the buoy again and dragged it first south and then some two miles west. It will be returned to its proper location as soon as possible.
||GSB Buoy #1 south of Sayville||Bellport
Buoy #1 data:
Wind, Air Temp, Humidity, PAR,
Water Temp, Salinity, Chlorophyll-a
Hour-Averaged Data Files:
|Plot of Bellport data for
the past 60 days
1/2 hour averaged data file
The plot and data file include NAVD88 water level, detided water level, temperature, salinity, fluorescence and turbidity. The real time sensor is located at the end of the marina dock.
Delayed-Mode SeaCat Data from
sites around Great South Bay
Islip Hatch/Fish Pier
||USCG Fire Island Inlet
|| Carmans River
|Right-click to download any of the data files|
on Fire Island
||Barrett Beach dat
||Bellport matfile||Bellport dat file
||Blue Point matfile||Blue Point dat file
||Carmans River matfile
||Carmans River dat file
||Islip Hatchery matfile||Islip Hatchery dat file
||Tanner Park matfile||Tanner Park dat
||USCG Fire Island
||USCG Fire Island dat
||Smith Point matfile|
A map of the United States showing precipitation.
NDBO Buoy 44025
Shows a 3-meter discus buoy South of Long Island.
Islip Airport Weather
Brookhaven Airport Weather
Local Towns Weather
Gives basic weather information for seven towns around Long Island.
Click on the Current Marine Data and the corresponding area to see wave height and wind data over the oceans.