lakecrescent
Lake Crescent, WA 

Project Location: Lake Crescent is a deep glacially carved lake occupying portions of two
  steep-sided fault-controlled valleys. The lake dates to around14 ka, following retreat of
  the Juan de Fuca lobe of the Cordilleran ice sheet to the east. The depth of the lake is ~190 m deep. 

Survey Dates: 19-20 May 2013
Sub-bottom System: Edgetech SB512i 
Pulse Duration:  20 ms 
CHIRP Frequency:  2-12 kHz 
Survey Method: Surface towed using a small catamaran behind a small boat.
  The SB512i was suspended from four chains beneath the catamaran at a depth of 1.0 ± 0.1m. Layback is 10 ± 1.0 m. 
Target Speed:  2.5-3.5 nm/hr 
Data Acquisition: Edgetech Discovery Software 
Navigation:  WAAS-enable Novatel Smart Antenna with accuracy of 1-3 m 
Coordinate System: Geographic, WGS84 
Funding Source: NSF EAR-1226064. Investigating the long-term record of seismically induced
  erosion preserved in the stratigraphy of Lake Quinault, Washington