A volcanologist uses GPS to track ground deformation: the ground swells 12 cm over 4 days, then doubles its daily rate for the next 2 days, and triples the original daily rate for the next 3 days. What is the total uplift after 9 days?

Mon, 04 May 2026 20:37:27 +0000

A volcanologist uses GPS to track ground deformation: the ground swells 12 cm over 4 days, then doubles its daily rate for the next 2 days, and triples the original rate for the following 3 days. What is the total uplift after 9 days? This pattern reflects how subtle ground movements can signal volcanic activity—changes that, when measured precisely, reveal critical insights about the Earth’s inner workings. As public interest in natural hazards grows—fueled by advances in monitoring technology and increased awareness of geophysical risks—understanding how GPS data translates into real-world uplift is more relevant than ever. --- Why A volcanologist uses GPS to track ground deformation: the ground swells 12 cm over 4 days, then doubles its daily rate for two more days, and triples the original rate for three final days. This progression illustrates how volcanic swelling accelerates—not gradually, but in measurable bursts. Despite the technical nature, data from GPS stations offer clear, precise uplift measurements, reinforcing public trust in scientific monitoring. As communities near active zones consider preparedness, accurate tracking of ground swelling becomes a vital tool in mitigating potential risks. ---