Mapping Onland River Channels up to the Seafloor along Offshore Cide-Sinop in the Southern Black Sea from the Perspective of the Black Sea Flooding

Abstract

In order to investigate the submarine morphology of offshore Cide-Sinop from the perspective of the Black Sea flooding, the rivers, submarine channels and some spatial data were extracted by using General Bathymetric Chart of the Oceans (GEBCO-2014) which is a seamless digital elevation and bathymetry grid (DEM), and Geographic Information System (GIS) software tools. The accuracy of extracted land rivers were controlled with 1/25K topo-maps by using buffer overlay method. The comparisons affirmed that the rivers are on ratio of 75% in 0-400 meters buffer distance. The derived submarine channels with a total of 1548 km length indicate that there is a dendritic drainage pattern with the flow direction from north to the south extending from coast to shelf plain, shelf break and converging toward the abyssal plain respectively in the study area. However, seismic profiles do not indicate any recent delta deposits on the shelf plain. The only some prograded delta deposits are determined at the shelf break in a limited area, where they coincide with the submarine channels derived in this study. These deposits are truncated from their top by an erosional surface which extends over the whole shelf plain. These results indicate that the derived submarine channels do not represent the current flow pattern offshore Cide-Sinop. Instead, they illustrate paleochannels that should be active during the last lowstand time, before the Black Sea Flood and their sedimentary influx should also control the developments of canyons located at the shelf edge at that time. However, the most of the canyons located on the shelf slope are under the influence of both submarine erosion and active tectonics at present.

Keywords

• DEM
• GIS
• Submarine Morphology
• Paleochannel Network
• Passive Canyons
• Offshore Cide-Sinop

Supporting Institution

The Scientific and Technological Research Council of Turkey (TUBITAK)

Project Number

114Y057

Thanks

This study was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) Project No. 114Y057. We thank the scientists of the Turkish Petroleum Corporation (TP) who provided the multichannel seismic reflection data. We also gratefully acknowledge the Emerson-Paradigm Software Grant for Istanbul Technical University which enabled data processing with their software package Echos™. Bathymetric data processing and interpretation were carried out through ArcGIS software, freely available.

References

1. Aksu, A.E., Hiscott, R.N., Yaşar, D. (1999). Oscillating quaternary water levels of the Marmara Sea and vigorous outflow into the Aegean Sea from the Marmara Sea–Black Sea drainage corridor. Marine Geology, 153:275–302
2. Algan, O., Gökaşan, E., Gazioğlu, C., Yücel, Z., Alpar, B., Güneysu, C., Kırıcı, E., Demirel, S., Sarı, E., Ongan, D. (2002). A high-resolution seismic study in Sakarya Delta and Submarine Canyon, southern Black Sea shelf. Cont Shelf Res 22, (10):1511-1527 Ballard, R.D., Coleman, D.F., Rosenburg, G.D. (2000). Further evidence of abrupt Holocene drowning of the Black Sea Shelf. Marine Geology, 170:253-261
3. Ballard, R.D., Hiebert, F.T., Coleman, D.F., Ward, C., Smith, J.S., Willis, K., Foley, B., Croff, K., Major, C., Torre, F. (2001). Deep water archeology of the Black Sea: the 2000 season at Sinop, Turkey. American Journal of Archaeology, 10:607-623
4. Banu, C.A. (1967). Limnologia sectorului romanesc al Dunarii. Monograph Acad. RSR, Bucharest, 650 p
5. Coleman, D.F., Ballard, R.D. (2007). Submerged paleoshorelines in the southern and western Black Sea implications for inundated prehistoric archaeological sites. In: Yanko-Hombach, V., Gilbert, A.S., Panin, N., Dolukhanov, P.M. (Eds.).The Black Sea Flood Question: Changes in Coastline, Climate, and Human Settlement. Springer, Dordrecht, the Netherlands
6. Degens, E.T., Ross, D.A. (1974). The Black Sea—Geology. Chemistry and Biology. AAPG Memoir 20, Tulsa, Oklahoma, 633 pp
7. Demirbağ, E., Gökaşan, E., Oktay, F.Y., Şimşek, M., Yüce, H. (1999). The last sea level changes in the Black Sea: evidences from the seismic data. Marine Geology, 157:249-265
8. Dondurur, D., Çifçi, G. (2007). Acoustic Structure and Recent Sediment Transport Processes on the Continental Slope of Yeşilırmak River Fan, Eastern Black Sea. Marine Geology, 237:37-53

9. Duman, M., Duman, Ş., Lyons, T.W., Avcı, M., İzdar, E., Demirkur, T.E. (2006). Geochemistry and sedimentology of shelf and upper slope sediments of the south-central Black Sea. Marine Geology, 227:51-65
10. Haq, B.U., Hardenbol, J., Vail, P.R. (1987). Chronology of fluctuating sea levels since the Triassic. Science, 235:1156-1167 Harris, P.T., Whiteway, T. (2011). Global distribution of large submarine canyons: geomorphic differences between active and passive continental margins. Marine Geology, 285 (1):69-86
11. Harris, P.T., Macmillan-Lawler, M., Rupp, J., Baker, E.K. (2014). Geomorphology of the oceans. Marine Geology, 352:4-24
12. Ianovici, V., Mihailescu, V., Badea, L., Morariu, T., Tufescu, V., Iancu, M., Herbst, C., Grumazescu, H. (Eds.) (1960). Geografia vaii Dunarii Romanesti Acad. RSR, Bucharest 783 pp
13. İşcan, Y., Ocakoğlu, N., Kılıç, F., Özel, O. (2019). Active tectonics of offshore Cide-Sinop (Southern Black Sea Shelf): from seismic and multibeam bathymetry data. Geo Mar Letters, 39:279-294
14. Jipa, D.C., Panin, N. (2020). Narrow shelfcanyons vs.wide shelf canyons: Twodistinct types of Black Sea submarine canyons. Quaternary International, 540:120-136
15. Jaoshvili, S. (2002). The rivers of the Black Sea. European Environmental Agency 58, Technical Report 71
16. Kundu, N.S., Pattanaik, D.S. (2011a). Mapping onland river channels up to the submarine along the west coast of India. Current Science, 101 (7):958-961
17. Kundu, N.S., Pattanaik, D.S. (2011b). Detection of Submarine channels Using Bathymetry Data in Geographical Information Systems. International Journal of Geomatics and Geosciences. Volume 1 (4):821-827
18. Lericolais, G., Popescu, I., Guichard, F., Popescu, S.M. (2007). A Black Sea lowstand at 8500 yr B.P. indicated by a relict coastal dune systemat a depth of 90mbelowsea level. In: Harff, J., Hay, W.W., Tetzlaff, D.M. (Eds.), Coastline Changes: Interrelation of Climate and Geological Processes. Geological Society of America Special Paper, 426:171-188
19. Lericolais, G., Guichard, F., Morigi, C., Popescu, I., Bulois, C., Gillet, H., Ryan, W.B.F. (2011). Assessment of Black Sea water-level fluctuations since the Last Glacial Maximum. In Buynevich I, Yanko-Hombach V, Gilbert A S and Martin R E, eds., Geology and Geoarchaeology of the Black Sea Region: Beyond the Flood Hypothesis: Geological Society of America Special Paper, 473. ISBN print: 9780813724737, pp 1–18
20. Nicholas, W.A., Chivas, A.R. (2016). Late Quaternary sea-level change on the Black Sea shelves. In: Chiocci F L, Chivas, A R (Eds.), Continental Shelves of the World: Their Evolution During the Last Glacio-Eustatic Cycle. Geological Society, London, Memories 41, pp 199–212
21. Ocakoğlu, N., İşcan, Y., Kılıç, Y., Özel, O. (2018). Morphologic and seismic evidence of rapid submergence offshore Cide-Sinop in the southern Black Sea shelf, Geomorphology, 311-15:76-89
22. Okyar, M., Ediger, V. (1999). Seismic evidence of shallow gas in the sediment on the shelf off Trabzon, southeastern Black Sea. Cont Shelf Res, 19: 575–587
23. Özhan, G. (1989). A high resolution seismic reflection study in the Black Sea and geological consequences. Geol Eng, 34-35: 28-30 (in Turkish with English abstract)
24. Popescu, I., Lericolais, G., Panin, N., Normand, A., Dinu, C., Ledrezen, E. (2004). The Danube submarine canyon (Black Sea) morphology and sedimentary processes. Marine Geology, 206: 249-265
25. Popescu, I. (2008). Processus sédimentaires récents dans l’éventail profond du Danube (Mer Noire). Geo-Eco-Marina 15 Special publication 2. 202 pp
26. Popescu, I., Panin, N., Jipa, D., Lericolais, G., Ion, G. (2015). Submarine canyons of the Black Sea basin with a focus on the Danube Canyon. pp. 103 – 121. In CIESM Monograph 47 [F. Briand ed.] Submarine canyon dynamics in the Mediterranean and tributary seas - An integrated geological, oceanographic and biological perspective, CIESM Publisher, Monaco, 232 pp
27. Pratson, L.F., Ryan, W.B.F. (1996). Automated Drainage Extraction in Mapping the Submarine Drainage System. California Margin Monterey Marine Geophysical Researches, 18:757-777
28. Ryan, W.B.F., Pitman III, W.C., Major, C.O., Shimkus, K., Moskalenko, V., Jones, G.A., Dimitrov, P., Görür, N., Sakınç, M., Yüce, H. (1997a). An abrupt drowning of the Black Sea shelf. Marine Geology, 138: 119–126
29. Ryan WBF, Pitman III, W.C., Major, C.O., Shimkus, K., Moskalenko, V., Jones, G.A., Dimitrov, P., Görür, N., Sakınç, M., Seyir, H.I. (1997b). An abrupt drowning of the Black Sea shelf at 7.5 kyr BP. Geo-Eco-Marina, 2: 115–126
30. Sipahioglu. N.O., Karahanoğlu, N., Altıner, D. (2013). Analysis of Plio-Quaternary deep marine systems and their evolution in a compressional tectonic regime, Eastern Black Sea Basin. Mar Petrol.Geol, 43:187-207
31. Strahler, A.N. (1952), Hypsometric (Area-Altitude) Analysis of Erosional Topology. Geological Society of America Bulletin, 63 (11):1117-1142
32. Twichell, D.C., Roberts, D.G. (1982). Morphology, distribution, and development of submarine canyons on the United States Atlantic continental slope between Hudson and Baltimore Canyons. Geology, 10:408–412
33. Varghese, S., Manoj, R.V. (2017). Active channel systems in the West Basin, Andaman Fore Arc: results from high-resolution bathymetry surveys and GIS analysis. Arab J Geosci, 10:227-237
34. Weatherall, P., Marks, K.M., Jakobsson, M., Schmitt, T., Tan,ı S., Arndt, J.E., Rovere, M., Chayes, D., Ferrini, V., Wigley, R. (2015). A New Digital Bathymetric Model of the World's Oceans. Earth and Space Science, 2:331-345
35. Winguth, C., Wong, H.K., Panin, N., Dinu, C., Geogescu, P., Ungureanu, G., Krugliakov, V.V., Podshuveit, V, (2000). Upper Quaternary water level history and sedimentation in the northwestern Black Sea. Marine Geology, 167:127-146
36. Yılmaz, Ö. (1987). Seismic Data Processing. SEG, Tulsa, USA