P
- Luigi Palmieri (Italian, 1807–1896) – Seismic studies of Mount Vesuvius
- Blaise Pascal (French, 1623–1662) – demonstrated that atmospheric pressure decreases with altitude
- Chaim Leib Pekeris (American, 1908–1993) – mathematical methods to study free vibrations of Earth, tides, and origin of Earth's magnetic field; Vetlesen Prize
- William Richard Peltier (Canadian, 1943–) – geophysical fluid dynamics, glacial rebound, climate change, Vetlesen Prize
- Pierre Perrault (1608–1680) developed the concept of the hydrological cycle
- John Henry Pratt (British, 1809–1871) – laid foundation for principle of isostasy
- Frank Press (American, 1924–) – design of a long-period seismograph, and the first detection of the Earth's normal modes of oscillation
Read more about this topic: List Of Geophysicists