Ground shaking storms

Martin HeesemannEarl DavisSteven MihalyRichard Thomson

NEPTUNE Science DMAS TEAM

Bromirski 2009

Seismic noise in Arizona

DF microseisms• non-linear interaction of opposing wave fields

SF microseisms• Wind waves interacting with coast

Earth‘s hum• Normal modes of earth• Infragravity waves

NOAA WaveWatch III

October storm

Nix pressure p

ressuree

rase

Pressure variations from ocean wavesShore

Off-shore

100 m

400 m

2700 m

Borehole

Waves

Storm induced water mixing?

Further study calls for cooperation:• Seismology• Oceanography• Borehole hydrology• WaveWatch III model

Non obvious applications:• Monitor climate change

– History– Decay of Antarctic ice

What is needed?

Time-series data that is…

• continuous over long periods of time– filling gaps

• carefully decimated for download– not mean values

• can be processed without downloading– Oceans 2.0