Imaging Magma Under St. Helens

The night of July 31, 2014 saw 8 successful shots fired in the iMUSH active seismic experiment. Again a large distribution of sensors were in the ground and the Pacific Northwest Seismic Network recorded and located the shots as before. For some example seismograms and discussion......

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After the first massive deployment and two nights of shooting the active experiment is half way over. For a few details of the massive effort.....

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During two nights this week and one next, shot holes will be fired for recording on thousands of seismic recorders. To see them arrive on the permanent PNSN stations.....

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A service run collected a few day's data from two passive seismic stations at the end of last week and are being used to develop and test our data processing system. For some example seismograms from these stations.....

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The passive seismic experiment is mostly in the ground and now the active seismic is to get underway soon. Site selections and surveys are done. Shot holes are mostly drilled and detailed schedules are firmed up. A large crew will be arriving in the area at the end of next week. For a few details.....

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Sixty-three stations installed and the crews are all out of the field. For a few photos, some of the statistics and stories....

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If you thought the last day in the life was long, boring, uneventful, tedious and fanciful then you ain't heard nothing yet. For the next installment.........

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Here is a map of the St. Helens area with installed passive seismic station locations marked with their name and a big magenta circle for those now operating. It will be updated as things progress.

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Here is a little story about a typical day in the life of a scientist in the field installing passive seismic stations. Some of this is true for the iMUSH teams, some is exaggerated, some is a combination of different teams and some is made up, but all is typical of what can and has happened in this or similar experiments in the past. For the gory details......

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The first set of iMUSH MT (MagnetoTelluric) stations has been successfully installed in the westernmost section of the iMUSH MT array. These are all on private (Weyerhauser) land west of Mt. St. Helens. Initial reports from the field crew suggest that things are going well. For more details and some photos.....

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Obtaining geophysical data from literally thousands of sites in the Mount St. Helens (MSH) area means many trips installing and recovering very specialized equipment. While none of it will remain after the experiment and the ground disturbance is minimal the US Forest Service, as the stewart of our lands, has the responsibility to make sure that the land is used wisely with minimal impact. Their permitting process is aimed as just that. The details of this may be little interest to many, but if you want the nitty gritty.......

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While the seismologists wait for permits and instruments the magnitotelluric group is almost ready to start collecting some data. Because we plan to collect our data in stages of a subset of sites at a time we can get going even before all sites have been permitted. For details....

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These pages are NOT something that either Apple came up with as a new computer gizmo nor a declaration of being a sled-dog racer but rather a short title designed to be catchy and memorable for what we hope will be a very exciting, rewarding and memorable, multidiscipline experiment to Image (or maybe Imagine) Magma Under St. Helens and the region around it. There are lots of technical details in these web pages, but for a very brief and simple explanation.....

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