*Feel free to pass along this announcement to interested colleagues. _Information to register for a /webinar/ of this event follows this announcement_. * *_Speaker_*: * * *Cary Troy, Ph.D.** Assistant Professor of Civil Engineering* *Purdue University* ** *_Title_*: * A Tale of Two Coasts: Causes and Consequences of Cross-shelf Thermal Structure in Lake Michigan* *_ Abstract_:* *Cross-shelf thermal structure in the Great Lakes plays an important role in setting species distributions, offshore transport and dilution, and nearshore circulation patterns.Results from two Lake Michigan field experiments investigating cross-shelf thermal variability during the summer stratified period are presented.The first experiment was carried out near Michigan City (IN) in 2009 and involved 7 temperature moorings, an Acoustic Doppler Current Profiler (ADCP), and transmissometers.A second experiment, carried out near Muskegon (MI), involved a similar arrangement and extended the measurements to deep waters (110m).Cross-shelf thermal transects from the relatively shallow Michigan City transect show that although the Indiana coast is not upwelling-aligned with the dominant summer winds, it is nonetheless a location of high subsurface thermal variability.An attempt is made to quantify this variability in a biologically-relevant manner. Analysis of data from this site also suggests that basin-scale circulation patterns (themselves caused by the dominant winds) are responsible for the flow along this coast, and that basin-scale internal seiches (Poincare waves) are not the dominant process responsible for moving the thermocline along the lake shelf.Recently-processed data from the Muskegon 2010 experiment highlights the thermal variability seen along this coast, and points to some interesting questions for upcoming work. * *Upcoming work involving the use of a Self-Contained Autonomous Microstructure Profiler (SCAMP) is also presented in the context of motivating questions on the effects of basin-scale internal seiches on mixing and dispersion in Lake Michigan.This National Science Foundation-funded work involves the correlation of basin-scale internal seiche structure with temperature and chlorophyll microstructure, and may help to answer questions related to phytoplankton blooms and the effects of invasive bivalves on water-column filtering.* *_Date_**: Wednesday, February 23 * ** *_Time_**:** 10:30 AM * *_Location_**: ** Lake Superior Hall ** NOAA-GLERL ** 4840 South State Road ** Ann Arbor, MI 48108 ** (http://www.glerl.noaa.gov/facil/triptik.html) * *_ Coffee, juice, and breakfast pastries will be served._* * If you wish to be removed from our seminar notification list, please email sanderdr at umich.edu, or sander.robinson at noaa.gov <mailto:sander.robinson at noaa.gov>. However, if you received this through GLIN or any other listserve, I cannot remove you. Sander Robinson Cooperative Institute for Limnology and Ecosystems Research (CILER) /Hosted by the University of Michigan's School of Natural Resources and Environment, CILER was established in 1989 as a center of excellence that serves as a focal point for collaborative research between the National Oceanic and Atmospheric Administration (NOAA) and universities around the Great Lakes region. Research focuses on improving scientific understanding and the prediction of key physical, chemical, and biological processes in order to facilitate the restoration, protection, and management of natural resources. The Institute also trains new and upcoming researchers through postdoctoral and undergraduate and graduate student fellowships. /* A Tale of Two Coasts: Causes and Consequences of Cross-shelf Thermal Structure in Lake Michigan Join us for a Webinar on February 23 <https://www2.gotomeeting.com/register/369470026> *Space is limited.* Reserve your Webinar seat now at: https://www2.gotomeeting.com/register/369470026 Cross-shelf thermal structure in the Great Lakes plays an important role in setting species distributions, offshore transport and dilution, and nearshore circulation patterns. Results from two Lake Michigan field experiments investigating cross-shelf thermal variability during the summer stratified period are presented. The first experiment was carried out near Michigan City (IN) in 2009 and involved 7 temperature moorings, an Acoustic Doppler Current Profiler (ADCP), and transmissometers. A second experiment, carried out near Muskegon (MI), involved a similar arrangement and extended the measurements to deep waters (110m). Cross-shelf thermal transects from the relatively shallow Michigan City transect show that although the Indiana coast is not upwelling-aligned with the dominant summer winds, it is nonetheless a location of high subsurface thermal variability. An attempt is made to quantify this variability in a biologically-relevant manner. Analysis of data from this site also suggests that basin-scale circulation patterns (themselves caused by the dominant winds) are responsible for the flow along this coast, and that basin-scale internal seiches (Poincare waves) are not the dominant process responsible for moving the thermocline along the lake shelf. Recently-processed data from the Muskegon 2010 experiment highlights the thermal variability seen along this coast, and points to some interesting questions for upcoming work. Upcoming work involving the use of a Self-Contained Autonomous Microstructure Profiler (SCAMP) is also presented in the context of motivating questions on the effects of basin-scale internal seiches on mixing and dispersion in Lake Michigan. This National Science Foundation-funded work involves the correlation of basin-scale internal seiche structure with temperature and chlorophyll microstructure, and may help to answer questions related to phytoplankton blooms and the effects of invasive bivalves on water-column filtering. *Title:* A Tale of Two Coasts: Causes and Consequences of Cross-shelf Thermal Structure in Lake Michigan *Date:* Wednesday, February 23, 2011 *Time:* 10:30 AM - 11:30 AM EST After registering you will receive a confirmation email containing information about joining the Webinar. *System Requirements* PC-based attendees Required: Windows® 7, Vista, XP or 2003 Server Macintosh®-based attendees Required: Mac OS® X 10.4.11 (Tiger®) or newer -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.great-lakes.net/lists/glin-announce/attachments/20110223/da15588e/attachment.html -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/png Size: 64119 bytes Desc: not available Url : http://www.great-lakes.net/lists/glin-announce/attachments/20110223/da15588e/attachment.png -------------- next part -------------- A non-text attachment was scrubbed... Name: sander_robinson.vcf Type: text/x-vcard Size: 393 bytes Desc: not available Url : http://www.great-lakes.net/lists/glin-announce/attachments/20110223/da15588e/attachment.vcf