A NEW APPROACH TO OBTAINING STRATIGRAPHICALLY UNDISTURBED COLUMNS OF BOTTOM SEDIMENTS IN SHALLOW WATER BODIES
Abstract
The new universal sampler for selection of cores of bottom sediments in shallow reservoirs from low-dimensional vessels or from ice is presented. The tube is immersed manually by means of a partitioned boom. The immersion into the sediment depending on its softness/ denseness is produced by pressing or by rotating. For that, the tube is equipped with detachable tips – either a smooth nose cone, or an auger bit, respectively. The tube has a plastic liner inside and an orange peel closing system similar to those used in gravity corers but installed in a different way, taking into account the safety of thin-wall details during drilling. To do this, the orange peel rotating along with the tube is placed fully opened in spacing between the tube and the liner, that excludes its contact with the sample during immersion into the liner. To lock the core, the liner at the beginning of the recovery moves upwards so that the orange peel can close. As a result, it is possible to select cores with undisturbed structure on different types of sediment, except for dense gravel. The efficiency of the new sampler was confirmed by its successful use from motor catamaran and ice in studies of bottom sediments of the Curonian and the Vistula Lagoon and of the 25 m deep lake in the spent amber quarry. The sampler can be used in marine sedimentology, limnology, and geoecology to determine the physico-mechanical, chemical and other characteristics of bottom sediments.
References
- Archibisov D.A., Kasperovich Е.V., Lyakishev M.S., Petrenko O.Е., and Shvecov V.A. Obzor sushchestvuyushchih ustrojstv otbora prob donnyh otlozhenij. Neobhodimost’ i napravleniya ih modernizacii. Vestnik Kamchatskogo Gos. Tekhnich. Un-ta, Bulletin of Kamchatka State Technical University, 2014, No. 30, pp. 6–11.
- Geoekologiya shel’fa i beregov morej Rossii. Ed. by N.A. Ajbulatov, Moskva: Noosfera, 2001, 428 p.
- Hirschberg D.J., Chin P., Feng H., and Cochran J.K. Dynamics of sediment and contaminant transport in the Hudson River estuary: evidence from sediment distribution of naturally occurring radionuclides. Estuaries, 1996, Vol. 19, pp. 931– 949.
- Shelkovnikov I.G. and Lukoshkov A.V. Tekhnicheskie sredstva podvodnogo razvedochnogo bureniya i oprobovaniya. Leningrad, Izd-vo Leningrad University, 1979, 224 p.
- Smoldyrev A.Е. Metodika i tekhnika morskih geologorazvedochnyh rabot. Moskva: Nedra, 1978, 303 p.
- Smolov Yu.S. Tekhnika dlya otbora prob donnyh osadkov. Opyt raboty i perspektivy. Geologiya i poleznye iskopaemye Mirovogo okeana, 2015, No. 1, pp. 80–90.
- Turskij A.A. Tekhnika morskih geologicheskih issledovanij. Leningrad, Izd-vo Plekhanov Leningrad Institution, 1980, 104 p.
- Windom H.L., Schropp S.J., Calder F.D. et al. Natural trace metal concentrations in estuarine and coastal marine sediments of the southeastern United States. Environmental Sciences and Technology, 1989, Vol. 23, pp. 314–320.
- Zarubin Е.P., Paka V.T., Podufalov A.P., and Chechko V.A. Probootbornik-bur dlya donnyh otlozhenij. Patent na poleznuyu model № 111912, Zayavka No. 2011128755, Zaregistrirovano v Gosudarstvennom reestre poleznyh modelej Rossijskoj Federacii 27 dekabrya 2011, Moskva: Rospatent, 2011.
Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS
