{"id":35812,"date":"2026-08-19T08:45:00","date_gmt":"2026-08-19T12:45:00","guid":{"rendered":"https:\/\/ecoticias.com\/en\/?p=35812"},"modified":"2026-08-19T08:45:00","modified_gmt":"2026-08-19T12:45:00","slug":"stanford-researchers-paired-seismometers-with-infrasound-microphones-to-capture-hurricane-forces-near-the-surface-offering-a-new-data-stream-for-forecasting-storm-intensity-without-waiting-for-landfa","status":"publish","type":"post","link":"https:\/\/www.ecoticias.com\/en\/stanford-researchers-paired-seismometers-with-infrasound-microphones-to-capture-hurricane-forces-near-the-surface-offering-a-new-data-stream-for-forecasting-storm-intensity-without-waiting-for-landfa\/35812\/","title":{"rendered":"Stanford researchers paired seismometers with infrasound microphones to capture hurricane forces near the surface, offering a new data stream for forecasting storm intensity without waiting for landfall"},"content":{"rendered":"\n

When Hurricane Isaac barreled over Louisiana in 2012, it pressed down on the Earth so hard that sensors built for earthquakes felt the ground flex. Stanford researchers<\/a> report that these seismic networks could offer a surprising new way to track a hurricane\u2019s shifting intensity<\/a> near the surface.<\/p>\n\n\n\n

The method combines seismometers, which register tiny ground movements, with infrasound microphones that detect pressure waves too low for human ears, so one tracks movement in the ground while the other tracks pressure changes in the air. It is not yet an operational forecasting system, but the study suggests existing geophysical stations could work alongside satellites<\/a>, radar, buoys, and aircraft.<\/p>\n\n\n\n

A storm leaves footprints underground<\/h2>\n\n\n\n

Hurricane winds and pressure changes do more than bend trees and rattle windows. They repeatedly press down on and lift the ground, creating tiny vibrations that sensitive seismometers<\/a> can record even when people feel nothing.<\/p>\n\n\n\n

Infrasound<\/a> supplies a second view by tracking low-frequency atmospheric pressure fluctuations. Together, the two signals let researchers follow changes in local turbulence instead of treating the storm as one giant wall of noise.<\/p>\n\n\n\n

\"Hurricane
Satellite view of Hurricane Isaac at landfall in Louisiana in 2012, overlaid with a seismogram showing stronger ground vibrations around the storm\u2019s calm eye.<\/figcaption><\/figure>\n\n\n\n

Why the lowest layer matters<\/h2>\n\n\n\n

Near the surface, wind, heat, and moisture churn through the hurricane boundary layer<\/a>. This turbulent zone helps control exchanges of energy between the surface and the atmosphere, which is why it indicates so much about storm intensity and behavior.<\/p>\n\n\n\n

That is also the layer coastal communities<\/a> eventually experience directly, with damaging wind, rain, and storm surge arriving at street level. Better observations there could give forecasters a fuller picture during those tense hours when evacuation plans, emergency messages, and infrastructure decisions matter most.<\/p>\n\n\n\n

Isaac created a rare experiment<\/h2>\n\n\n\n

The breakthrough began with a fortunate overlap in August 2012. As luck would have it, Hurricane Isaac, a Category 1 storm at Louisiana landfall, crossed stations equipped with seismometers and infrasound microphones for a National Science Foundation project that was mapping Earth\u2019s interior.<\/p>\n\n\n\n

\n