Proxy records
نویسندگان
چکیده
منابع مشابه
COnstructing Proxy Records from Age models (COPRA)
Reliable age models are fundamental for any palaeoclimate reconstruction. Available interpolation procedures between age control points are often inadequately reported, and very few translate age uncertainties to proxy uncertainties. Most available modeling algorithms do not allow incorporation of layer counted intervals to improve the confidence limits of the age model in question. We present ...
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Sedimentary proxy records constitute a significant portion of the recorded evidence that allows us to investigate paleoclimatic conditions and variability. However, uncertainties in the dating of proxy archives limit our ability to fix the timing of past events and interpret proxy record intercomparisons. While there are various age-modeling approaches to improve the estimation of the age–depth...
متن کاملSecuring Healthcare Records Using Proxy Re-Encryption Scheme in Cloud
The advent of semi-conductors emerged day to day and lead us to the current trend of Cloud computing, which brings the information required to our life at our finger tips. The technology of today is getting expanded every day, especially in the management of EHR’s. In order to provide high security for health care data we need a strong security mechanism for EHR, Proxy re-encryption schemes are...
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The sediments of Ethiopian crater lakes have differentially sensitive palaeoclimate indicators that vary with time. Lake Tilo, in the south-central Rift Valley, shows a 10,000-year diatom and oxygen-isotope sequence that may be interpreted in terms of hydrochemical and hydrological responses to century-scale climate changes. The diatom record of lake salinity became sensitive to climate variabi...
متن کاملGeochemistry of speleothem records from southern Illinois: Development of (U)/(U) as a proxy for paleoprecipitation
Natural waters universally show fractionation of uranium series (U-series) parent–daughter pairs, with the disequilibrium between U and U (U)/(U) commonly used as a tracer of groundwater flow. Because speleothems provide a temporal record of geochemical variations in groundwater precipitating calcite, (U)/(U) variations in speleothems provide a unique method of investigating water–rock interact...
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ژورنال
عنوان ژورنال: Nature
سال: 1984
ISSN: 0028-0836,1476-4687
DOI: 10.1038/308580c0