Regelation is the process by which ice melts under pressure, then refreezes once the pressure is released. This phenomenon has been given different names in various scientific fields. For example, in geology, it's sometimes referred to as "pressure melting," while in physics, it's known as "Melting under Pressure." Another synonym is "Ice Fusion," which is commonly used in materials science. Meanwhile, in environmental studies, people often use "Regelation Effect" to describe this process. Regardless of what term is used, the science behind it remains the same. Whether studying the movement of ice in a glacier or investigating the properties of ice in a laboratory, researchers depend on this process of regelation to understand how ice behaves under different conditions.