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GLIN==> UPCOMING SEMINARS

We have two seminars scheduled for the week of 3/19 as a part of the NOAA/University of Michigan Great Lakes Seminar Series. Both seminars will be held at the Great Lakes Environmental Research Laboratory located at 2205 Commonwealth Blvd, Ann Arbor, MI.

1) "Technology research and development in the marine instrumentation laboratory"
Speaker: Steven Ruberg, MSE, Observing Systems Researcher, NOAA-GLERL

Date: Tuesday, March 20
Time: 1030AM

Abstract:
Real-time observing systems are providing opportunities for environmental measurements not possible previously. Episodic events can be detected and used to initiate system sampling, high bandwidth applications such as fisheries acoustics can be operated in real-time minimizing data collection platform interference, and /in situ /instrumentation failures can be detected and repaired resulting in more reliable data collection. Observing system data is being integrated into regional, national and global scale systems that will benefit the public, decision makers and researchers. Advances in towed instrumentation and the use of sensors on remotely operated vehicles combined with visualization techniques are resulting in unprecedented insight into benthic and pelagic phenomenon. Integrated circuit micro-electro-mechanical systems are being developed that have the potential to dramatically decrease instrumentation cost and so increase spatial measurement density as well as the potential to provide new approaches to measurements of marine chemistry. This seminar will provide an overview of research and development projects in the Marine Instrumentation Laboratory at GLERL.

2) "Hindcasting of estuarine bathymetric change with a tidal-timescale sediment transport model"
Speaker: *Neil Kamal Ganju*, Hydraulic Engineer, U.S. Geological Survey, Sacramento, CA

Date: Thursday, March 22
Time: 10:30 AM

Abstract:
Geomorphic evolution of estuarine habitats and landscapes over decadal timescales is sensitive to sediment supply from the watershed as well as estuarine hydrodynamics. Sediment supply to Suisun Bay, California is subject to natural as well as anthropogenic influence, beginning with the drastic input of sediment during the hydraulic mining period of the late 19th century. Today sediment supply is declining due to reduction of the hydraulic mining sediment pulse, reservoir storage, and land use practices. The Regional Oceanic Modeling System (ROMS) was previously developed for Suisun Bay and calibrated to tidal-timescale sediment dynamics, as well as annual sediment fluxes. These calibration steps verify the suitability of the model for evaluating seasonal and year-to-year sediment transport trends, but give no validation of the resulting geomorphic patterns. The evolution of channels, shoals, and mudflats must also be simulated correctly for complete robustness of the model. We are now in the process of implementing the calibrated model for hindcasting bathymetric change for the period 1867-1990, during which five bathymetric surveys were made. Boundary conditions are idealized due to the lack of long-term boundary data, while computational efficiency is increased with modified time-stepping procedures.

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If you have any questions or concerns, please email me at kanika.suri@noaa.gov; or call 734-741-2147.

For more information about the seminar series, please visit our website at http://www.glerl.noaa.gov/news/seminars/


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Kanika Suri
Web Designer Associate

NOAA Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.,
Ann Arbor, MI
48105

Tel: (734) 741-2147
Fax: (734) 741-2055

www.glerl.noaa.gov

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