A

P

ALLARD , P.

Last name: ALLARD

First name: P.

2010 (v1)

Book

Metadata-only

Géographie des interfaces. Une nouvelle vision du territoire

Lampin-Maillet, C. Pérès, Sabine Ferrier, J.P.

At a time of globalization, mobility and wide distribution, the connecting of geographical spaces of different natures becomes more and more frequent. It takes place by means of interfaces, new geographical object, the role of which is to insure mainly the exchange and regulation between different, continuous and connecting systems. These...

Uploaded on: December 4, 2022
August 15, 2016 (v1)

Journal article

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Spatial distribution of helium isotopes in volcanic gases and thermal waters along the Vanuatu (New Hebrides) volcanic arc

Jean-Baptiste, P. Allard, P. Fourré, E.

We report the first helium isotope survey of volcanic gases, hot springs and some olivine phenocrysts along the Vanuatu island arc, from Tanna in the south to Vanua Lava in the north. Low CO2 content and low 3He/4He ratios in thermal fluids of Epi (4.0 ± 0.1 Ra), Efate (4.5 ± 0.1 Ra) and Pentecost (5.3 ± 0.5 Ra) islands coherently indicate...

Uploaded on: February 28, 2023