The idea here is to focus on the "upstream source" of cells to Casco
Bay. By stringing most of the moorings along the 100
m isobath, we should be able to see if there is a departure and subsequent
reattachment of the Eastern Maine Coastal Current, and with moorings 1-4
we should be able to better characterize the temporal and spatial variability
in the upstream flow (relative to Casco Bay). Moorings
1-3 & 7 will be USGS/WHOI moorings and 4-6 will be UMAINE moorings.
ECOHAB Y2K Mooring Locations and Depths ---traditional moorings------------------- lon lat depth (msl) -69.8651 43.6113 -85.3 USGS1 & MUSL1 (Casco DLINE [1998 M1 mooring location]) -69.3488 43.7021 -94.3 USGS2 & MUSL5 (Casco ELINE inshore) -69.3008 43.5323 -141.0 USGS3 & MUSL4 (Casco ELINE offshore) -68.5233 43.7557 -151.8 ECH41 (Penobscot Bay offshore) -68.6333 43.8955 -91.7 ECH51 (Penobscot Bay inshore) -68.1085 44.1060 -97.9 ECH61 (Maine Coastal Current) -67.6116 43.5129 -229.7 USGS7 (jordan basin) ---additional mussel bag moorings---------------- lon lat depth (msl) -69.8955 43.7607 -16.6 MUSL2 (Mouth of New Meadows) -69.2627 43.3729 -147.0 MUSL3 (southernmost ELINE) -69.3977 43.8156 -48.6 MUSL6 (northernmost ELINE) Notes: - Depths are relative to Mean Sea Level (MSL) - The maximum expected range in water elevation is 4.5 m - Typical expected current speeds at the moorings are 10-30 cm/s with maximum expected speeds of 100 cm/s.
The USGS/WHOI Moorings 1-3 will have:
Depth below surface | Instrument |
1 m | SeaCat (temp; salinity) |
3 m | S4 (currents) |
5 m | VMCM (currents; temperature) |
45 m | Sediment trap (21 bottle time series trap at mooring 2or 3; tube traps at others) |
50 m | VACM-TCT (currents; temperature; salinity and transmission |
92 m | Upward looking 300 Khz ADCP |
96 m | VACM-TCT (currents; temperature; salinity and transmission |
98 m | Release |
100 m | Anchor |
The Jordan Basin mooring (USGS/WHOI Mooring 7) will be a pressure mooring, with pressure at the bottom and 4 seacats in a string above.
The UMAINE moorings 4-6 have T/S at 1 m and 50 m and a downward looking 300 Khz ADCP.
Feedback, please!
-Rich Signell (rsignell@usgs.gov)