[Latinmag] Fwd: [gpmag-l] Fwd: Jean-Pierre Valet (1954 – 2024)

Lun Sep 2 20:36:52 -03 2024

-------- Mensaje Original --------
Asunto: [gpmag-l] Fwd: Jean-Pierre Valet (1954 – 2024)
Fecha: 2024-09-02 19:21
De: Catherine Constable <cconstable en ucsd.edu>
Destinatario: GPMAG <gpmag-l en ucsd.edu>
Cc: Constable Cathy <cconstable en ucsd.edu>

Dear Colleagues,

I am very sorry to be forwarding this message from Julie Carlut about
Jean-Pierre. He will be greatly missed.

Cathy

> Begin forwarded message:
> FROM: Julie Carlut <carlut en ipgp.fr>
> 
> SUBJECT: JEAN-PIERRE VALET (1954 – 2024)
> 
> DATE: September 3, 2024 at 1:11:34 AM GMT+9
> 
> TO: Catherine Constable <cconstable en ucsd.edu>
> 
> CC: <carlut en ipgp.fr>
> 
> Dear Cathy,
> 
> Can you please pass this sad news to the g-pmag community.
> 
> best wishes,
> 
> Julie Carlut
> 
> JEAN-PIERRE VALET (1954 – 2024)
> 
> It is with deep sadness that we inform you of the passing of our
> colleague and friend, Jean-Pierre Valet, on August 28, 2024, after a
> long illness.
> 
> Jean-Pierre Valet, who became a Research Director at CNRS and joined
> the Geomagnetism and Paleomagnetism team at the Institut de Physique
> du Globe de Paris in 1990, began his career in 1982 as a Research
> Associate at the Centre des Faibles Radioactivités in Gif-sur-Yvette.
> 
> After completing his university studies, which he financed by working
> as a school supervisor, Jean-Pierre Valet developed a passion for
> paleomagnetism. He dedicated his doctoral research to the study of the
> Earth's magnetic field reversals recorded in the Miocene and Pliocene
> marine sediments of Crete. After successfully defending his thesis in
> 1985, he spent a year at the paleomagnetism laboratory of the Scripps
> Institution of Oceanography in the United States.
> 
> From 1990, Jean-Pierre Valet participated in core drilling campaigns
> (on the N/O Marion-Dufresne) and deep-sea drilling (ODP/IODP). The
> sedimentary sequences he collected allowed him to reconstruct in
> detail the variations in the direction and intensity of the magnetic
> field during reversals. Combining information obtained from the
> magnetization of marine or lake sediments with data from volcanic
> rocks sampled around the world (Hawaii, Canary Islands, Cape Verde),
> Jean-Pierre Valet and his team constructed composite records of
> geomagnetic dipole variations over the last two million years. They
> were the first to demonstrate the occurrence of "sawtooth" variations
> characterized by phases of gradual field intensity reduction preceding
> reversals, followed by abrupt recoveries afterward. These observations
> suggested to them that the Earth's dynamo regains energy by reversing
> its polarity and then gradually loses it until the next reversal. This
> brilliant theory, developed with his wife Laure Meynadier, remains a
> subject of study and debate in the international geophysics and
> paleomagnetism community. These composite field variation curves also
> hold stratigraphic value as they offer paleoclimatologists and
> paleoceanographers the ability to correlate sedimentary sequences over
> long distances. Jean-Pierre Valet also proposed phenomenological
> descriptions of reversals and excursions, a topic that fascinated him
> throughout his career.
> 
> Since 2015, Jean-Pierre Valet had been leading an ERC Advanced Grant
> project that involved three laboratories (IPGP, CEREGE, and LSCE) in
> studying the Earth's magnetic field by coupling paleomagnetism with
> the production of the cosmogenic nuclide Beryllium 10. This project,
> which he directed with fervor and tenacity until 2020, resulted in
> several doctoral and postdoctoral works and produced a significant
> number of articles published in high-impact journals. The last two
> papers (in the process of publication) were prepared in early 2024,
> seven years after his illness was discovered.
> 
> Jean-Pierre Valet was also involved in research administration and
> operations, notably leading the UMR Geomagnetism and Paleomagnetism at
> IPGP (1997-2005) and participating in numerous committees and councils
> in France and abroad, including serving as the president of the
> "Magnetism, Paleomagnetism, and Rock Physics" division of the EGU in
> 2002. Aware of the central role of education and teaching, Jean-Pierre
> Valet directed the IPGP doctoral school (1999-2005).
> 
> Jean-Pierre Valet was the author of nearly 200 publications on topics
> ranging from paleointensity variations to the extinction of
> Neanderthals. He supervised and co-supervised 12 doctoral theses,
> guiding students with care and generosity. In recognition of his work,
> Jean-Pierre Valet received the CNRS Silver Medal (2001) and the Petrus
> Peregrinus Medal from the European Geosciences Union (2010) for his
> exceptional impact within the scientific community. He was also a
> Fellow of the American Geophysical Union (since 2003) and a member of
> the Société Philomathique de Paris.
> 
> For the past four decades, Jean-Pierre Valet has been a dedicated and
> enthusiastic worker, combining complex methodologies and concepts to
> address fundamental questions about the dynamics of our Earth's
> interior. Those who worked alongside him have lost a passionate
> collaborator and an exceptional experimenter. Many have also lost a
> friend.
> 
> Our thoughts are with his family, especially his wife Laure and his
> daughter Iris, who were by his side during his final moments.
> 
> The ceremony will be held on September 11, 2024, at 1:30 PM, in the
> Salle de la Coupole at the Père Lachaise Crematorium. The burial will
> take place in the presence of close family at the Antony Cemetery.
> No flowers or wreaths, please.
> 
> If you wish you can honor his memory with a donation to one of the
> following organizations:
> 
> Fondation La Main à la Pâte
> fondation-lamap.org [1]
> 
> Association for Research on Innovative Cancer Therapeutics
> association-artic.org [2]
> 
> Hematology Service of Cochin Hospital - Université Paris Cité
> soutenir.aphp-centre.aphp.fr/cochin-hematologie [3]
> 
> Association for Kidney Tumor Research
> payasso.fr/association_artur/adhesions-dons [4]

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Links:
------
[1] 
https://urldefense.com/v3/__http://fondation-lamap.org__;!!Mih3wA!Cpipog13kqLR8EcbhKaPjwzSEqt8YdC7ZG-2DXWK3s_NiJOxeVK2GVzYgVHfbjo9CeoNO-0eAHSpjZxHrOeQQQ$
[2] 
https://urldefense.com/v3/__http://association-artic.org__;!!Mih3wA!Cpipog13kqLR8EcbhKaPjwzSEqt8YdC7ZG-2DXWK3s_NiJOxeVK2GVzYgVHfbjo9CeoNO-0eAHSpjZy1ajsriA$
[3] 
https://urldefense.com/v3/__http://soutenir.aphp-centre.aphp.fr/cochin-hematologie__;!!Mih3wA!Cpipog13kqLR8EcbhKaPjwzSEqt8YdC7ZG-2DXWK3s_NiJOxeVK2GVzYgVHfbjo9CeoNO-0eAHSpjZx_N_z8Dw$
[4] 
https://urldefense.com/v3/__http://payasso.fr/association_artur/adhesions-dons__;!!Mih3wA!Cpipog13kqLR8EcbhKaPjwzSEqt8YdC7ZG-2DXWK3s_NiJOxeVK2GVzYgVHfbjo9CeoNO-0eAHSpjZxrsDR5nQ$