Answer :
To determine the potential temperature of water at 4000m depth with specific conditions, use the related formula based on in-situ temperature, pressure, and salinity.
The potential temperature of water at 4000m depth with an in-situ temperature of 0°C and a salinity of 35.0 can be calculated using the equation that relates potential temperature to in-situ temperature, pressure, and salinity.
For this scenario:
- In-situ temperature = 0°C
- Salinity = 35.0
- Pressure = 4000 dbar
By applying the appropriate formula, the approximate potential temperature can be determined.