Geochemical and oceanographic data, acquired throughout 6 months by the GEOSTAR-2 benthic observatory in Southern Tyrrhenian Sea, disclosed ocean-lithosphere interactions in the 1900-m deep Benthic Boundary Layer (BBL), distinguishing two water masses with different origin and, possibly, benthic residence time. Gas concentration, helium isotopic ratios, radioactivity, temperature, salinity and vertical component of the current converged towards the indication of a BBL characterised by a colder and fresher Western Water (WW), episodically displaced by the cascading of the warmer and saltier Eastern Overflow Water (EOW). The benthic WW has a higher concentration of geochemical tracers diffusing from the seafloor sediments. The data set shows the potential of long-term, continuous and multiparametric monitoring in providing unique information which cannot be acquired by traditional, short-term or single-sensor investigations.
Etiope, G., Favali, P., Fuda, J.l., Italiano, F., Laubenstein, M., Millot, C., et al. (2006). The Benthic Boundary Layer: geochemical and oceanographic data from the GEOSTAR-2 Observatory RID H-3343-2011. ANNALS OF GEOPHYSICS, 49(2-3), 705-713.
The Benthic Boundary Layer: geochemical and oceanographic data from the GEOSTAR-2 Observatory RID H-3343-2011
PLASTINO, Wolfango
2006-01-01
Abstract
Geochemical and oceanographic data, acquired throughout 6 months by the GEOSTAR-2 benthic observatory in Southern Tyrrhenian Sea, disclosed ocean-lithosphere interactions in the 1900-m deep Benthic Boundary Layer (BBL), distinguishing two water masses with different origin and, possibly, benthic residence time. Gas concentration, helium isotopic ratios, radioactivity, temperature, salinity and vertical component of the current converged towards the indication of a BBL characterised by a colder and fresher Western Water (WW), episodically displaced by the cascading of the warmer and saltier Eastern Overflow Water (EOW). The benthic WW has a higher concentration of geochemical tracers diffusing from the seafloor sediments. The data set shows the potential of long-term, continuous and multiparametric monitoring in providing unique information which cannot be acquired by traditional, short-term or single-sensor investigations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
