MEMORANDUM


            DATE:       October 11, 1990

            TO:         Cruise participants,
                        Aldrich, Barton, Butman, Davis, Greatorex, Irwin, Newell, O'Brien,
                        Soderberg, Sexton;
                        CWO L.J. Blackburn III, USCGC WHITE HEATH
                        Wendy Smith, MWRA

            FROM:      Mike Bothner

            SUBJECT:    Pre-cruise report: Moorings/sampling in Massachusetts Bay




            1. Vessel: Coast Guard Buoy Tender, WHITE HEATH

            2. Branch principal: Bothner

            3. Cruise area: western Massachusetts Bay

            4. Departure and return: on or about October 23 and October 24; two long day
                   trips leaving from the Coast Guard Dock in Boston's North end.  Scientists
                   working both days will stay in a Boston hotel if travel is authorized in
                   the new budget.  Schedule is subject to weather and Coast Guard's mission
                   requirements.  Staging of equipment will occur on Friday October 19 and
                   Monday October 22 at the Coast Guard Support Center, 427 Commercial
                   Street, Boston.

            5. Ports: Boston - Boston

            6. Cruise personnel

                   Day 1: Recovery and Deployment- Mike Bothner, Adam Brown, Brad Butman,
                   Fran Hotchkiss, Marinna Martini, Carol Parmenter, Rick Rendigs, Rich
                   Signell, Bill Strahle, and a MWRA representative (?).

                   Day 2. Sediment sampling and subsampling- Mike Bothner, Adam Brown,
                   Magela Moffett, Carol Parmenter, Bill Winters, Rick Rendigs, and
                   a MWRA representative (?).

                   Overtime requests have been filed for those eligible.

          7. Purpose of cruise: This cruise will be the fourth in the two year program
                  jointly funded by the USGS and the Massachusetts Water Resources
                  Authority.  The US Coast Guard is generously providing ship time and at-
                  sea support. The objective of the program is to conduct long term
                  monitoring of currents, sediment transport, and physical/chemical
                  characteristics of sediments in western Massachusetts Bay.

                  Work plan for day 1: to recover and redeploy an instrumented tripod, a
                  subsurface mooring, and a near surface current meter from the Coast
                  Guard's "large navigation buoy" (LN "B") at the approach to Boston
                  Harbor.

                  Work plan for day 2: sediment samples will be collected with the
                  hydraulically damped corer, a Van Veen grab sampler, and a 4" diam gravity
                  corer at two locations near the proposed offshore outfall for Boston's
                  sewage treatment plant.  If time permits we will sample in a third area
                  of fine grained sediment in the general vicinity of LN"B".

                  If mooring equipment does not check out properly at the time of reassembly
                  in Boston, we may request to collect sediment samples on day 1.

           8. Major equipment and systems: The hydraulically damped corer and teflon
                  coated Van Veen grab sampler will be used to collect bottom sediments.
                  A 4" ID gravity corer will also be used on this cruise. Currents and
                  sediment transport measurements will be made with Butman's upgraded
                  moored equipment. A time-series sediment trap and a remotely operated
                  suspended matter sampler (both made by McLean Associates will be deployed
                  on the subsurface mooring. Eight tube traps and 1 Anderson trap will be
                  attached to the moorings. Loran C navigation, and triangulation from
                  known points on land will be provided by the WHITE HEATH.

           9. Data types to be collected and quantity: A maximum of 9 cores and 12 grab
                  samples will be collected on this cruise. Subsampling of the top 5 cm at
                  1/2 cm intervals will occur on board or at the dock before transporting
                  cores to Woods Hole.  Tripod and other mooring data will be recovered.
                  Sediment trap and suspended matter samples collected from the moorings
                  will also be recovered and transported on ice to Woods Hole.








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