Contact

Bret M. Webb, Ph.D., P.E., D.CE
Professor
University of South Alabama
150 Jaguar Drive, SH3142
Mobile, AL 36688 USA
Phone: (251) 460-6174
Fax: (251) 461-1400
Email: bwebb@southalabama.edu

Research Positions

None available at this time

Current Research Assistants

SE Students
Garland Pennison

 

MSCE Students
Patrick Hautau
Marshall Hayden
Kate Haynes
Justin Lowlavar
Vijaya Satya Lohitha Mukkamala
Jackie Wittmann

 

Undergraduate Students
Derek Kelly
Rh'Monte Wilson

Former Students

MSCE Students
Bryan Groza (2016)
Kari Servold (2015)
Chris Marr (2013)
Richard Allen (2013)
Miyuki Matthews (2012)

 

Post Docs
Jon Risinger
Jungwoo Lee

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The Jag Ski is a personal-watercraft-based system for collecting hydrographic data in shallow areas, or those areas where accessibility constraints make launching a normal watercraft impossible. The Jag Ski collects georeferenced bathymetry (depth measurements), current velocity profiles and discharge, and near-surface water quality indicators, as well as concentrations of refined fuel and crude oil, by using a number of instruments with integrated Global Positioning System capability. An onboard PC and waterproof LCD touchscreen display offer navigation support and a software interface for the onboard equipment. A four-wheel-drive utility vehicle is used to tow and launch the Jag Ski in remote areas, and is also used for rapidly collecting topographic elevations over large areas.

 

Existing Capabilities

  • RTK DGPS Positioning
  • Depth Soundings (Bathymetry)
  • Discharge Measurements
  • Velocity (current) Profile Distributions
  • Near-surface maps of:
    • Water Temperature
    • Conductivity (salinity, density)
    • Dissolved oxygen
    • Turbidity
    • Chlorophyll-a
    • pH
    • Refined fuel
    • Crude Oil
    • Chromophoric dissolved organic material (CDOM)
    • Wind speed and direction
    • Air temperature
    • Barometric pressure
    • Relative humidity

Extended Capabilities

  • Conductivity-Temperature-Depth (CTD) profiling
    • This provides information about the vertical stratification of the water column
    • The CTD data also provide sound speed corrections for acoustic data

 

New Capabilities

  • An R.M. Young meteorological station was added to the Jag Ski in August 2011. The met station provides georeferenced measurements of wind speed and direction, air temperature, relative humidity, and barometric pressure. These sensors have been integrated with the YSI PSK 1500 to complete the full SeaKeeper system.

 

Equipment Description

  • 2008 Kawasaki Ultra LX
  • 2008 Kawasaki Mule 300 4×4
  • Magellan ProMark 500 RTK DGPS System (Base & Rover)
  • SonTek River Surveyor M9 ADP
  • SonTek River Surveyor M9 RTK DGPS
  • YSI Portable SeaKeeper 1500 (YSI 6600v2 sonde, Turner Designs C3 UV fluorometer)
  • R.M. Young Meteorological Station
  • YSI CastAway CTD Profiler
  • KVH GyroTrac
  • VarTech Touchscreen LCD
  • SubConn Cables & Connectors
  • Underwater Kinetics Waterproof Cases
  • Four 12VDC, 18AH Dry-Cell Batteries by Battery Source

 

Jag Ski Videos

  • This is a series of short video clips describing the capabilities of the University of South Alabama Jag Ski. The video footage was part of AIDT’s On The Job television show, which originally aired in April 24, 2011. The segments were filmed at Dog River Park in Southwest Alabama in March 2011. The entire video can be seen here.

 

 

 

 

Representative Measurements

  • Bathymetry
  • Flows
  • Near-Surface Water Chemistry

 

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