Sample records for marcinkeviien steponas raudonius

  1. Steponas Kolupaila's contribution to hydrological science development

    NASA Astrophysics Data System (ADS)

    Valiuškevičius, Gintaras


    Steponas Kolupaila (1892-1964) was an important figure in 20th century hydrology and one of the pioneers of scientific water gauging in Europe. His research on the reliability of hydrological data and measurement methods was particularly important and contributed to the development of empirical hydrological calculation methods. Kolupaila was one of the first who standardised water-gauging methods internationally. He created several original hydrological and hydraulic calculation methods (his discharge assessment method for winter period was particularly significant). His innate abilities and frequent travel made Kolupaila a universal specialist in various fields and an active public figure. He revealed his multilayered scientific and cultural experiences in his most famous book, Bibliography of Hydrometry. This book introduced the unique European hydrological-measurement and computation methods to the community of world hydrologists at that time and allowed the development and adaptation of these methods across the world.

  2. Archaeological Investigations in the Gainesville Lake Area of the Tennessee-Tombigbee Waterway. Volume II. Gainesville Lake Area Ceramic Description and Chronology.

    DTIC Science & Technology


    Recent examination of the Bessemer collection has revealed a few sherds of the sand tempered types Roods Plain and Mound Field Net Marked. One sherd...Steponaitis 1978:2). "Filmed" could no longer be designated as part of the type name because of these observations . A distinctive type name was...been observed for this variety at Moundville (Steponaitis 1978:17). One pedestalled bottle was recovered from Burial 25 at Site 1Pi33 (Fig. 63). .4

  3. Stone Quarries and Sourcing in the Carolina Slate Belt

    DTIC Science & Technology


    have become almost routine.” In addition to obsidian, 5 IRWIN AND STEPONAITIS volcanic rocks such as andesite , dacite, and silicified...rhyolite” and are represented by seven samples of meta- andesite and metalatite from three areas (Figure B.4). All but two of the samples were collected...a hilltop with a localized outcrop of small boulders of andesite porphyry. A revisit revealed that the site had recently been destroyed by

  4. Investigation into MIS 11 in the U.S. Great Basin Using Trace Elements and Stable Isotopes from two Lehman Caves Stalagmites

    NASA Astrophysics Data System (ADS)

    Neary, A.; McGee, D.; Tal, I.; Shakun, J. D.


    Marine Isotope Stage 11 (MIS 11) represents a long interglacial period of high temperatures and muted orbital variability that occurred around 424-374 kya, and is referred to as a 'super-interglacial'. MIS 11 is marked by especially pronounced high latitude warming in the Northern Hemisphere from 410-400 ka and thus presents a natural experiment for investigating the response of Great Basin precipitation to high latitude temperatures.MIS 11 is recorded by stalagmites LC3 and BT1 from Lehman Caves in Great Basin National Park, Nevada. LC3 represents 378-413 ka, while BT1 has a bottom age of 410 ka. Ongoing U-Th dating will refine chronologies from these samples. We will present stable isotope (δ13C and δ18O) and trace element (Mg/Ca and Sr/Ca) data from these stalagmites to study changes in precipitation recorded in them. Previous studies have shown a relationship between Mg/Ca, Sr/Ca, δ13C and prior calcite precipitation, and thus infiltration rates, in the cave system (Cross et al., 2015; Steponaitis et al., 2015). Meanwhile, δ18O has been shown to reflect larger scale atmospheric circulation.We will compare the records to previously published trace element and stable isotope data from more recent interglacials (Lachniet et al., 2014; Cross et al., 2015; Steponaitis et al., 2015) to test whether extensive high-latitude warming during MIS 11 was marked by anomalous precipitation patterns in the Great Basin. As they are coeval, we will also test the reproducibility between the stalagmites.References cited:Cross M., et al. (2015) Great Basin hydrology, paleoclimate, and connections with the North Atlantic: A speleothem stable isotope and trace element record from Lehman Caves, NV. Quaternary Science Reviews, in press.Steponaitis E., et al. (2015) Mid-Holocene drying the U.S. Great Basin recorded in Nevada speleothems. Quaternary Science Reviews, in press.Lachniet M. S., et al. (2014) Orbital control of western North America atmospheric circulation and climate