Mapping natural radioactivity of soils in the eastern Canary Islands

Abstract:

The Canary Islands archipielago (Spain) comprises seven main volcanic islands and several islets that form a chain extending for around 500 km across the eastern Atlantic, between latitudes 27°N and 30°N, with its eastern edge only 100 km from the NW African coast. The administrative province of Las Palmas comprises the three eastern Canary Islands (Lanzarote, Fuerteventura and Gran Canaria). An extensive study of terrestrial gamma dose rates in surface soils has been carried out to cover the entire territory of the province (4093 km2). The average outdoor gamma dose rate in air at 1 m above ground is 73 nGyh−1 at Gran Canaria, 32 nGyh−1 at Fuerteventura, and 25 nGyh−1 at Lanzarote. To complete the radiological characterization of this volcanic area, 350 soil samples at 0–5 cm depth were collected to cover all the geologic typologies of the islands. These samples were measured using high resolution …

Año de publicación:

2017

Keywords:

Fuente:

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