The measurement errors in the Swift-UVOT and XMM-OM     

N. P. M. Kuin  S. R. Rosen 《Monthly notices of the Royal Astronomical Society》2008,383(1):383-386

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Copper bioavailability and toxicity to Mytilus galloprovincialis in Shelter Island Yacht Basin,San Diego,CA     

Casey Bosse  Gunther Rosen  Marienne Colvin  Patrick Earley  Robert Santore  Ignacio Rivera-Duarte 《Marine pollution bulletin》2014

The bioavailability and toxicity of copper (Cu) in Shelter Island Yacht Basin (SIYB), San Diego, CA, USA, was assessed with simultaneous toxicological, chemical, and modeling approaches. Toxicological measurements included laboratory toxicity testing with Mytilus galloprovincialis (Mediterranean mussel) embryos added to both site water (ambient) and site water spiked with multiple Cu concentrations. Chemical assessment of ambient samples included total and dissolved Cu concentrations, and Cu complexation capacity measurements. Modeling was based on chemical speciation and predictions of bioavailability and toxicity using a marine Biotic Ligand Model (BLM). Cumulatively, these methods assessed the natural buffering capacity of Cu in SIYB during singular wet and dry season sampling events. Overall, the three approaches suggested negligible bioavailability, and isolated observed or predicted toxicity, despite an observed gradient of increasing Cu concentration, both horizontally and vertically within the water body, exceeding current water quality criteria for saltwater.  相似文献   

A Bayesian Markov Geostatistical Model for Estimation of Hydrogeological Properties     

Lars Rosen  Gunnar Gustafson 《Ground water》1996,34(5):865-875

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Co-seismic slip from the 1995 July 30 M_w= 8.1 Antofagasta, Chile, earthquake as constrained by InSAR and GPS observations     

M. E. Pritchard  M. Simons  P. A. Rosen  S. Hensley  F. H. Webb 《Geophysical Journal International》2002,150(2):362-376

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Seasonal variability in the pole-to-pole modes of water vapor transport during the IGY     

Prof. J. P. Peixoto  Dr. R. D. Rosen  Dr. D. A. Salstein 《Meteorology and Atmospheric Physics》1978,27(3-4):233-255

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A proterozoic subduction zone in southern Sweden     

Bengt E.H. Loberg 《Earth and Planetary Science Letters》1980,46(2):287-294

Optical microscopy and chemical analyses for major and trace elements have been performed on 27 Proterozoic metavolcanics from southern Sweden. The metavolcanics and associated metasediments are part of a large arced structure around a vast region with granitic batholiths.The compositional data show that the rocks are altered basalts and andesites and the Si, Ti, Zr and Cr relations demonstrate that almost half of the metabasalts are in accordance with present day arc volcanics and that another large fraction represents ocean floor tholeiites. These relations suggest that major plate tectonic processes occurred already during the Proterozoic in southern Sweden and that during these processes arc volcanics and ocean floor basalts were mixed at a subduction zone.  相似文献   

On the identification of Ar x and Ar xiv in the solar corona and the origin of the unidentified coronal lines     

Bengt Edlén 《Solar physics》1969,9(2):439-445

A study of theZ-dependence of the² P intervals of 2s ²2p and 2s ²2p ⁵, aided by recent observational results, confirms the identification in the coronal spectrum of λ 4412 with Arxiv, and of λ 5533.4 with Arx. It is further shown that transitions from metastable levels in the configurations 3s ²3p ^k 3d, withk=3, 4 and 5, of Fexi,x, ix, and Nixiii, xiii, xi can well account for the remaining unidentified coronal lines.  相似文献   

On the origin of the hot ions in the disturbed dayside magnetosphere     

Bengt Hultqvist 《Planetary and Space Science》1983,31(2):173-184

On the basis of observations in the dayside magnetosphere of the O⁺ and H⁺ ion densities as function of radial distance under fairly undisturbed and under storm conditions it is argued that acceleration of the hot magnetospheric ions of ionospheric origin cannot be limited to the outer parts of the field tubes. The extraction process seems to work below 1000 km altitude in storm conditions and to have a fairly small extension in altitude. The acceleration mechanism(s) do(es) not affect only one ion species. Variation in the altitude of the extraction of ionospheric ions is the most likely reason for the observed variations in the n(O⁺)/n(H⁺) ratio. Extraction of ionospheric ions into the magnetosphere does not seem to be a main cause of the storm time density decrease of the ionosphere.  相似文献   

Is hydrogeologic science on track?     

LeGrand H  Rosen L 《Ground water》2002,40(6):569-569

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Temperature correction of electrical conductivity values     

Bengt Calles  Ulla Maria Calles 《地球表面变化过程与地形》1990,15(7):673-678

For a number of applications in geoscience, electrical conductivity of water is often used as a collective measure of the concentration of dissolved solids. A method for temperature correction of electrical conductivity data based on regression analysis of the actual temperature/conductivity relationship of a number of water samples from natural streams is presented. It is shown that the generally used formulae for temperature correction give corrected results that deviate considerably from the values determined by actual measurements. The error increases with decreasing water temperature and may result in data that deviate by as much as 20 per cent from the true values. The implications are thus especially important for measurements of solute loads and concentrations during periods of low stream water tetaperatures e.g. during snowmelt.  相似文献