Thanks Russ. I think this is the key. My gut says that if you increase air pressure to equal water pressure at a certain depth that this will displace water to that depth. Is that correct?russ_watters said:
Air pressure is the force exerted by the weight of air in the atmosphere. It is measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa).
Air pressure is typically measured using a device called a barometer. A barometer measures the weight of the atmosphere by using a column of liquid, such as mercury or water, to balance the weight of the air. The measurement is then displayed on a scale in units of force per unit area.
The standard air pressure at sea level is typically around 14.7 pounds per square inch (psi) or 101,325 pascals (Pa). This is also known as one atmosphere of pressure and is used as a reference point for other air pressure measurements.
As altitude increases, the air pressure decreases. This is because there is less weight of air above a given point at higher altitudes. For every 1000 feet increase in altitude, the air pressure decreases by approximately 1 inch of mercury (inHg) or 3386.39 pascals (Pa).
Air pressure can be affected by changes in temperature, humidity, and altitude. It can also be influenced by weather patterns, such as high or low pressure systems, and human activities, such as air pollution. Changes in air pressure can also have an impact on weather and can be used to predict changes in the weather.