Download a PDF version of the Mermaid presentation at AGU, or go to the Mermaid
pages for the latest news on this revolutionary new seismograph
that opens up the oceans for seismometry!
Geoazur and Princeton celebrated Guust Nolet's career.
Click
here for some photos and to read his views on the future of the
geosciences and what that means for the way we educate students.
The ERC project has come to an end....
Though the ERC project ended definitely in January 2015, and its
PI now has emeritus status, he continues to work with former postdocs
on many of the topics of interest, and especially with Yann Hello on
further development of the Mermaids - the underwater robots that are
the most spectacular succes of the Globalseis project.
The Galapagos project
The last of the Mermaids active near the Galapagos islands (in an effort
to image the deeper segment of the mantle plume)
has now run out of battery power.
It transmitted data until October 2016.
We are currently analyzing hundreds of seismograms.
The figure gives the
path coverage of the data analyzed so far
(path coverage is a technical term indicating how the mantle plume is illuminated by
seismic rays, which will allow is to compute an image of its temperature
anomaly).
Global tomography
With Dylan Mikesell we have inverted more than three million Rayleigh
wave phase data. We estimated standard errors objectively using the
method we developed with Sergey Voronin
(Voronin et al., 2014) and were able to ascertain that we need to
include both azimuthal anisotropy as well as Love-Rayleigh mode coupling
to fit the data to their accuracy. Click
here
to obtain a PDF copy of the poster we presented at the EGU Assembly
in April 2016 in Vienna.
