Coastal CTD Casts for Southeast Alaska Red King Crab Survey

CTD casts collected from the RV Medeia provide conductivity, depth, pressure, oxygen saturation, salinity, and temperature measurements. The Alaska Department of Fish and Game gathered this data during a 2010 survey to build an oceanographic database for fishery management. Data collection occurred from 09 June 2010 to 21 July 2010 in the coastal waters of Southeast Alaska.

Use Cases

• Analyze temperature and salinity profiles to identify water mass characteristics influencing crab habitats.
• Model oxygen saturation levels against depth and pressure to assess hypoxic conditions in survey areas.
• Correlate conductivity and salinity measurements for sensor calibration and data quality validation.
• Examine time-series of depth and temperature to study short-term oceanographic variability during the survey period.

Strengths

• Includes six key oceanographic variables: conductivity, depth, pressure, oxygen saturation, salinity, and temperature.
• Data collected over a focused 43-day period in 2010 for a specific fishery survey.

Limitations

• Unknown row count and sample size limit statistical analysis.
• Data is from a single summer season in 2010, limiting analysis of long-term or seasonal trends.
• Geographic scope is restricted to specific survey locations in Southeast Alaska.

Provenance

Source

Alaska Department of Fish and Game, archived by NOAA NCEI.

Collection Method

CTD casts conducted from the RV Medeia research vessel.

Time Range

09 June 2010 to 21 July 2010

Freshness

Single collection event concluded on 2010-07-21.

Geography

Coastal waters of Southeast Alaska.