Isotope Study of Moisture Sources, Recharge Areas and Groundwater Flowpaths within the Eastern Batinah Coastal Plain, Sultanate of Oman

Oxygen and hydrogen isotope analyses of rainfall samples collected on the eastern Batinah coastal plain of northern Oman between 1995 and 1998 indicate two different principal water vapor sources for precipitation in the area: a northern, Mediterranean source and a southern, Indian Ocean source. As a result, two new local meteoric water lines were defined for the study area. Isotopic analyses of groundwater samples from over 200 springs and wells indicate that the main source of water to the Batinah coastal alluvial aquifer is high-altitude rainfall from the adjacent Jabal Akhdar Mountains, originating from a combination of northern and southern moisture sources. The groundwater recharged at high-altitude forms two plumes of water which is depleted in the heavy isotopes 18O and 2H and stretches from the mountains across the coastal plain to the sea, thereby retaining a chemical homogeneity horizontally and vertically down to a depth exceeding 300 m. In contrast, in areas adjacent to these two plumes the alluvial aquifer is geochemically stratified. Near the coast, saline intrusion results in abrupt changes in chloride concentrations and isotope values.

Dissolved organic carbon in sediments of the central Arctic Ocean collected during POLARSTERN cruise ARK-XXVII/3 from August-September 2012

Marine organic matter (OM) sinks from surface waters to the seafloor via the biological pump. Benthic communities, which use this sedimented OM as energy and carbon source, produce dissolved organic matter (DOM) in the process of remineralization, enriching the sediment porewater with fresh DOM compounds. We hypothesized that in the oligotrophic deep Arctic basin the molecular signal of freshly deposited primary produced OM is restricted to the surface sediment pore waters which should differ from bottom water and deeper sediment pore water in DOM composition. This study focused on: 1) the molecular composition of the DOM in sediment pore waters of the deep Eurasian Arctic basins, 2) whether the signal of marine vs. terrigenous DOM is represented by different compounds preserved in the sediment pore waters and 3) whether there is any relation between Arctic Ocean ice cover and DOM composition. Molecular data, obtained via 15 Tesla Fourier transform ion cyclotron resonance mass spectrometer, were correlated with environmental parameters by partial least square analysis. The fresher marine detrital OM signal from surface waters was limited to pore waters from < 5 cm sediment depth. The productive ice margin stations showed higher abundances of peptides, unsaturated aliphatics and saturated fatty acids formulae, indicative of fresh OM/pigments deposition, compared to northernmost stations which had stronger aromatic signals. This study contributes to the understanding of the coupling between the Arctic Ocean productivity and its depositional regime, and how it will be altered in response to sea ice retreat and increasing river runoff.

Humanism and tyranny, studies in the Italian trecento,

The text of each document, with an introduction.

Incunabulum incunabulorum. TheGutenberg Bible on vellum in the Vollbehr collection. An authentic story of the choicest book of Christendom told anew,

"Table of all the know Gutenberg Bibles on vellum still extant": p. [8]

Incunabulum incunabulorum.

"Table of all the known Gutenberg Bibles on vellum still extant": p. [8]

Concertino, in D major, for violin and piano, op. 12 /

Acc. originally for orchestra.

Kitāb al-ʻibar wa-dīwān al-mubtadaʼ wa-al-khabar ̣fī ayyām al-ʻArab wa-al-ʻajam ̣wa-al-barbar wa-man ʻāṣarahym min dhawī al-sulṭān al-akllhbar wa-huwa tarīkh waḥīd ʻaṣrih /

Mode of access: Internet.

Laurentii Vallensis ... Historiarum Ferdinandi, regis Aragoniae, libri treis ...

Mode of access: Internet.

Trois anciens traictez de la philosophie naturelle.

Datos correspondientes a la segunda parte tomados de CCFR.

Les gladiateurs de la République des lettres aux XVe, XVIe, XVIIe siècles /

Mode of access: Internet.

Entretiens de Monsieur l'Abbé de*** au sujet des affaires présentes par rapport a la religion : tome septieme.

Mode of access: Internet.