title: Hydrochemical assessment of transboundary rivers (on the example of the Narva border river)
metadata.name: dc.contributor.author
metadata.value: Potapova, Tatyana M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Zadonskaya, Olga V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Parshina, Tatyana V.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2023-08-28T18:38:55Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2023-08-28T18:38:55Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2023-03
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Potapova, T. M., Zadonskaya, O. V., Parshina, T. V. (2023). Hydrochemical assessment of transboundary rivers (on the example of the Narva border river). Vestnik of Saint Petersburg University. Earth Sciences, 68 (1), 136–152. https://doi.org/10.21638/spbu07.2023.108 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2023.108
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/43920
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The purpose of the study is to establish the regularities of the formation of the biogenic regime
  of the Narva River. Based on experimental data on the determination of concentrations of
  chemical elements for the long-term observation period from 1992 to 2019, a trend of reducing
  the content of biogenic elements over the past 14 years has been revealed. This is a consequence
  of reducing the anthropogenic load due to the reconstruction of treatment facilities
  on the Estonian and Russian sides. Analysis of intra-annual changes in the content of biogenic
  elements showed a steady increase in the content of nitrogen compounds during high water
  with maximum water runoff and an increase in phosphorus content in the autumn period.
  This indicates a significant influence of the waters of Lake Peipus and the Narva reservoir,
  which determine the intra-reservoir processes that intensify at the end of the warm season.
  The calculation of runoff based on experimental data of average annual water consumption
  and monthly determinations of concentrations of mineral, biogenic and organic substances
  for the period from 1992 to 2019. The calculated values of the runoff indicators are: ionic
  runoff 43,1 t/km2, total phosphorus 9,8 kg/km2, total nitrogen 142 kg/km2, organic carbon
  2,75 t/km2, according to the background values of the runoff indicators of the Baltic region.
  It is important to note that for the period from 1993 to 2006; significantly higher runoff rates
  for phosphorus phosphates and nitrogen nitrates corresponded to the literature data on runoff
  from reclaimed agricultural areas, which also indicates a significant decrease in the biogenic
  load on the Narva River in the last decade from 2006 to 2019.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The work is supported by the project ER 25 NarvaWatMan (2020) “Water Resources Management
  of the transboundary Narva River: harmonization and sustainability” of the Russia — Estonia cross-border
  cooperation program for the period 2014–2020.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Earth Sciences;Volume 68; Issue 1
metadata.lang: -
metadata.name: dc.subject
metadata.value: runoff of dissolved substances
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: biogenic and organic substances
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: microelements
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Hydrochemical assessment of transboundary rivers (on the example of the Narva border river)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 08.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/43920/1/08.pdf
resources.format: Adobe PDF
resources.size: 1,45 MB