Robin Lacassin @RobinLacassin@qoto.org

Courte video IPGP - Université Paris Cité, dans laquelle j'explique le contexte des #séismes du 6 Février en Turquie.

"3 questions à Robin Lacassin sur les séismes du 6 février 2023 en Turquie" :

https://youtu.be/wR1Oj-Bz_y4

I try to post in French and English about the Turkish #earthquake, here and also on the bird site (where I still reach much more people interested in natural hazards). Also responding to French media…

Not enough time to explain everything in detail though… 😕 Don't hesitate to ask, I'll try to answer whenever possible.

Thoughts for the many victims and injured in Turkey and Syria ❤️

Deux failles décrochantes du système Est Anatolien (EAF) ont rompu aujourd'hui dans le SE de la #Turquie.

Le premier #séisme, de magnitude Mw7.8 à 8, a cassé plusieurs segments du “EAF main strand” sur une longueur de 150 à 300km. Le second, également de forte magnitude, Mw7.5 à 7.7, s'est produit plus au nord sur la faille de Sürgü-Çartak (EAF northern strand). En carte, les deux failles rompues, toutes deux sénestres, sont marquées par l'alignement de leurs répliques.

De très nombreuses répliques ont suivi les deux chocs principaux, mais le second puissant séisme est plutôt une rupture déclenchée sur une faille adjacente. Il ne peut pas être qualifié de réplique au sens strict.

Ces évènements, fortes répliques et séisme déclenché, nous rappellent qu'il faut rester très vigilant pendant les jours/semaines/mois qui suivent un très fort séisme.

Two faults of the East Anatolian Fault (EAF) system ruptured today. First, a Mw7.8 #earthquake on EAF main strand probably breaking several segments. Second a Mw7.5 to 7.7 on the Sürgü-Çartak Fault (EAF N strand). Both ruptures are outlined by their aftershocks (circles on map), and both are left-lateral.

There are many aftershocks following the two big earthquakes, but the second rupture is rather a triggered earthquake on an adjacent fault belonging to the EAF system.

This reminds us to be wary of possible strong aftershocks or triggered ruptures in the following days-weeks after a big earthquake.

Strong destructive #earthquake in SE Turkey / N Syria, magnitude Mw~7.8.

Mechanism compatible with left-lateral strike-slip on the southern part of East Anatolian Fault system. Aftershock zone extends for ~250km along that fault system. Complex source time function may suggest rupture on several fault branches. The left-lateral East Anatolian Fault system bounds the Anatolian tectonic microplate to the east.

Sources of maps:
• http://geoscope.ipgp.fr/index.php/en/catalog/earthquake-description?seis=us6000jllz
• https://www.emsc-csem.org/Earthquake/earthquake.php?id=1218444#summary
• http://www.koeri.boun.edu.tr/new/en

https://respublicae.eu/@CopernicusEU/109813161021157695

More, dramatic, informations on the #wildfires in South-central #Chile

Spanish: https://www.elmostrador.cl/noticias/pais/2023/02/05/incendios-forestales-han-dejado-24-fallecidos-y-hay-51-siniestros-en-combate/

English: https://www.theguardian.com/world/2023/feb/05/chile-wildfires-kill-at-least-23-people-as-state-of-emergency-extended-further

South-central #Chile is burning. Reminds the January 2017 catastrophic #wildfires that killed at least 11. Very high temperature and drought conditions (T°max 33-35°C in Santiago past days). Imagery Aqua/MODIS.

“Según el reporte de Conaf, hay 191 incendios forestales activos a nivel nacional: 45 en combate y 146 controlados, situación que va variando permanentemente por las condiciones climáticas”

Read more here (in spanish):
https://www.elmostrador.cl/noticias/multimedia/2023/02/03/presidente-boric-confirma-45-incendios-forestales-en-combate-y-aclara-nadie-tiene-que-tratar-de-ser-un-superheroe/
And:
https://www.elmostrador.cl/revista-jengibre/2023/02/03/incendios-forestales-y-fauna-silvestre-en-riesgo/

“A study, conducted in 2020 by the American Physical Society (APS) and published in Physics Today, reveals alarming rates of unethical research practices and harassment in the physics community, including data manipulation and physical abuse.” 👇🏼

https://www.nature.com/articles/d41586-023-00115-z

In The Guardian: Science journals ban listing of #ChatGPT as co-author on papers. Some publishers also banning use of bot in preparation of submissions but others see its adoption as inevitable…

https://www.theguardian.com/science/2023/jan/26/science-journals-ban-listing-of-chatgpt-as-co-author-on-papers

In Le Monde French newspaper, in FR and EN:

Désobéissance civile : « Les climatologues sont aussi des citoyens et des êtres humains » https://www.lemonde.fr/idees/article/2023/01/26/desobeissance-civile-les-climatologues-sont-aussi-des-citoyens-et-des-etres-humains_6159384_3232.html

Civil disobedience: 'Climate scientists are citizens and humans too'
https://www.lemonde.fr/en/opinion/article/2023/01/26/civil-disobedience-climate-scientists-are-citizens-and-humans-too_6013152_23.html

Also, only in FR: https://www.lemonde.fr/planete/article/2023/01/26/face-a-la-crise-ecologique-des-scientifiques-tentes-par-la-radicalite-sortez-de-vos-labos-allez-dans-la-rue_6159367_3244.html

DM if you want PDF

Open letter to the #AGU
to support Rose Abramoff @ultracricket
and Peter Kalmus @ClimateHuman

"We as scientists cannot and must not tolerate this censorship and chilling lack of support from our scientific society and therefore urge AGU to, etc…"

Read and sign here https://www.aguopenletter.com/