Počet záznamů: 1

Recent Atmospheric Deposition and its Effects on Sandstone Cliffs in Bohemian Switzerland National Park, Czech Republic

SYSNO ASEP	0362737
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Recent Atmospheric Deposition and its Effects on Sandstone Cliffs in Bohemian Switzerland National Park, Czech Republic
Tvůrce(i)	Vařilová, Z. (CZ) Navrátil, Tomáš (GLU-S)_{RID, SAI, ORCID} Dobešová, Irena (GLU-S)_{RID, SAI}
Zdroj.dok.	Water, Air, and Soil Pollution. - : Springer - ISSN 0049-6979 Roč. 220, 1/4 (2011), s. 117-130
Poč.str.	14 s.
Forma vydání	WWW - WWW
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	acid deposition ; sandstone percolates ; chemical weathering ; salt efflorescence ; Black Triangle ; aluminum ; sulfates
Vědní obor RIV	DD - Geochemie
CEZ	AV0Z30130516 - GLU-S (2005-2011)
UT WOS	000293783700012
EID SCOPUS	80052297210
DOI	10.1007/s11270-010-0739-8
Anotace	The Bohemian Switzerland National Park with its characteristic sandstone landscape was influenced by the long term air pollution and acidic deposition within the area known as Black Triangle. One of the significant negative effects of intensive acidic deposition on sandstone outcrops has been identified as chemical weathering, i.e. process when porous sandstone rock is except of chemical influence attacked also by force of crystallization of growing salts crystals. Current (2002 to 2009) bulk deposition fluxes of SO₄^2- determined at three sites indicate decline from 23 to 16 kg.ha^-1.yr^-1. Infiltration of bulk precipitation solutes into sandstone mediates weathering processes. Under usual conditions percolation water evaporates at the sandstone surface producing salt efflorescences - the typical example is Pravčická brána Arch locality. The average pH of the dripping sandstone percolates was 3.76. Concentration of SO₄^2- and Al in sandstone percolates reached up to 46 and 10 mg.L^-1.
Pracoviště	Geologický ústav
Kontakt	Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272
Rok sběru	2012

Počet záznamů: 1