CHANGES OF ANAPA BAY BAR DUNE RELIEF BASED ON REPEATED AIRBORNE LASER SCANNING

http://doi.org/10.24057/2414-9179-2018-2-24-55-70

View or download the article (Rus)

About the Authors

Valentina I. Kravtsova

Lomonosov Moscow State University, Faculty of Geography,
Leninskie Gory, 1, 119991, Moscow, Russia,
E-mail: valentinamsu@yandex.ru

Mikhail D. Drugov

Lomonosov Moscow State University, Faculty of Geography,
Leninskie Gory, 1, 119991, Moscow, Russia,
E-mail: midrug@gmail.com

Abstract

Anapa bay bar degrades due to strong anthropogenic impact [Krylenko, 2012]. Information about current morphological changes is necessary for developing of measures for its conservation. This data were obtained from air laser scanning survey, carried out in 2013 and 2015 with 1 cm height resolution. Calculated difference digital elevation model (DDEM) has revealed changes of bay bar relief for 2 years. Comparison of DDEM with maps of bay bar landscape-morphological structure, compiled at preceding years by high resolution satellite images and digital air photos, allowed to investigate various by type and genesis morphological changes. 41 spots with different character of morphological changes, were allocated. They were grouped into 7 regions with prevailing of specific type of changes. All changes were divided to: natural, with natural wind and waves processes; natural-anthropogenic (where natural destructive processes are intensified by human impact) and anthropogenic changes. Natural processes prevail only at 30 % of bay bar. The main of them are: aeolian accumulation of sand at beach dunes; sand blowing out at windward slopes of dune ridges and accumulation behind the ridge; wave abrasion of dune seaward slope at narrow beach. In regions with anthropogenic impact and destruction of vegetation cover, processes of sand blowing out at windward slopes are intensified. Along transverse roads to beach blowouts with aeolian and hydrogen cones are forming; erosion along them was detected by DDEM. Anthropogenic changes are the strongest: dunes are digging out; lakes are filling up during preparation for construction; destroying of defense ridges and creation of new ones for optimization of their position.

Keywords

bay bar, relief changes, laser scanning, anthropogenic impact.

References

  1. Aibulatov N.A. Study of longshore sand sediments transport at sea M.: Nauka, 1966. 149 p. (in Russian).
  2. Boyko E., Krylenko V., Krylenko M. LIDAR and airphoto technology in the study of Black sea accumulative coasts. Abstracts 3rd Intern. Conf. on Remote Sensing and Geoinformation of Environment-RSCy. 2015. P. 61.
  3. Egorov E.N. Role of aeolian processes in dynamics of accumulative flat coast. Trudy Instituta okeanologii AS USSR. 1957. V. 21 (in Russian).
  4. Kos’jan  .D., Krylenko V.V. The current state of the accumulative coasts of Krasnodar region and their management. M.: Nauchnyj mir, 2014. 256 p. (in Russian).
  5. Kravtsova V.I., Falaleeva A.A. Mapping of landscape-morphological structure of Anapa bay bar by high resolution satellite images. Ustojchivoe razvitie territorij: kartografo-geoinformacionoe obespechenie. InterCarto-InterGIS-21. Krasnodar: KUbGU, 2015. P. 33–47. DOI: http://dx.doi.org/10.24057/2414-9179-2015-1-21 (in Russian).
  6. Kravtsova V.I., Krylenko V.V., Drugov M.D., Boyko E.S. Investigation of relief dynamics of the Northern-Western part of Anapa bay bar by materials of air laser scanning. Geoinformatika. 2017. No 4. P. 48–62 (in Russian).
  7. Krylenko V. Natural and anthropogenic factors which determine evolution of Anapa bay bar. Synopsis of PhD thesis. The Southern Branch of the Shirshov Institute of Oceanology RAS. Gelendjik, 2012. 24 p. (in Russian).
  8. Vykhovanets G.V. Aeolian process at sea coast Odessa: Astroprint, 2003. 268 p. (in Russian).
  9. Zenkovich V.P. Morphology and dynamics of the Soviet Coast of the Black Sea. M.: AS USSR, 1958. V. 1. 187 p. (in Russian).

For citation: Kravtsova V.I., Drugov M.D. CHANGES OF ANAPA BAY BAR DUNE RELIEF BASED ON REPEATED AIRBORNE LASER SCANNING Proceedings of the International conference “InterCarto. InterGIS”. 2018;24(2):55–70 http://doi.org/10.24057/2414-9179-2018-2-24-55-70