Hyperthermal

Définitions de « hyperthermal »

Hyperthermal - Adjectif

• Concernant les phénomènes de réchauffement climatique exceptionnels et intenses, capables d'induire une élévation significative de la température terrestre sur des périodes prolongées.

  La Terre a connu en ces temps lointains plusieurs bouffées de chaleur, dont les plus violentes, baptisées « événements hyperthermaux », ont pu faire grimper le mercure de 10° en quelques siècles à peine, et pour de longues périodes (de quelques dizaines à quelques centaines d’années), avant que la planète retrouve son climat d’avant.

Hyperthermal - Nom commun

• Période caractérisée par une élévation significative de la température climatique.

  Le phénomène hyperthermal, une hausse majeure de la chaleur planétaire, catalyse les débats sur le réchauffement climatique.

Étymologie de « hyperthermal »

Évolution historique de l’usage du mot « hyperthermal » depuis 1800

Citations contenant le mot « hyperthermal »

• Here we tackle this issue by focusing on one of the most severe extinction crises of the Jurassic: the Pliensbachian-Toarcian crisis. This event was a global, multi-phased, hyperthermal event triggered by volcanic episodes in the Karoo-Ferrar Large Igneous Province35,36,37,38, which led to the extinction of around 15–20% of marine species39. This disturbance was characterized by an early abrupt warming of at least 5° C at the Pliensbachian-Toarcian boundary event (PToB)40,41,42,43, which is considered a precursor crisis to the early Toarcian warming and oceanic anoxic event (T-OAE)44,45.

• Around 56 million years ago, Paleocene-Eocene Thermal Maximum (PETM), one of the most famous historical hyperthermal events, led our planet to a super greenhouse condition. It is very important for us to understand how it happened and how it affected the environment, because studying past climatic events of extreme global warmth may be one of the best ways for us to understand and predict future environmental and ecological changes in response to ongoing anthropogenic warming.

• WASHINGTON - An interdisciplinary team of scientists at the U.S. Naval Research Laboratory (NRL), Electronics Science and Technology and Materials Science and Technology Divisions, has demonstrated hyperthermal ion implantation (HyTII) as an effective means of substitutionally doping graphene -- a hexagonally-arranged single-atomic thickness carbon sheet -- with nitrogen atoms. The result is a low-defect film with a tunable bandstructure amenable to a variety of device platforms and applications.

• Citation: Miller K, Tietjen K, Beard KC (2023) Basal Primatomorpha colonized Ellesmere Island (Arctic Canada) during the hyperthermal conditions of the early Eocene climatic optimum. PLoS ONE 18(1): e0280114. https://doi.org/10.1371/journal.pone.0280114

• One way that scientists can study the parallels between hyperthermals and current climate change is by finding a suitable analogue – that is, the hyperthermal that was most similar to the kind of global warming that we’re seeing today.

Traductions du mot « hyperthermal »

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