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Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011
Tanaka H.a, Adityawan M.B.a,b, Mano A.a
a Department of Civil Engineering, Tohoku University, Japan
b Water Resources Engineering Research Group, Institut Teknologi Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]This study investigates the morphological changes near the Nanakita River mouth in Japan. The morphology of the river mouth was greatly influenced during the Great East Japan Tsunami of 2011. The gradual morphological changes at the river mouth were investigated using two sets of data, of which, one was the continuous water level measurement data in the river entrance and in the sea, and the other being the intermittent aerial-photographs. The statistical parameters, viz., the correlation coefficient and the linear gradient between the two water level data, were analyzed, which formed as the basic for understanding the behavior of the river mouth, like river mouth closure or opening detected by the analysis of the water level variation. The proposed method is found efficient and effective in the evaluation of the morphological changes near a river mouth. © 2014 Elsevier B.V.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Correlation coefficient,Linear gradients,Morphological changes,River mouths,Statistical parameters,The Great East Japan Tsunami of 2011,Water level variations,Water-level data[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Correlation,Linear regression,Morphological changes,River mouth,The Great East Japan Tsunami of 2011,Water level variation[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors wish to express their gratitude to the Miyagi Prefectural Government and the Ministry of Land, Infrastructure and Transport for providing us the precious water level data. This research could not be conducted without financial supports from JST / JICA , SATREPS (Science and Technology Research Partnership for Sustainable Development), Grant-in-Aid for Scientific Research from JSPS (no. 22360193 , no. 2301367 ), and Grant-in-Aid for Scientific Research from the River Environmental Fund (REF) in charge of the Foundation of River and Watershed Environmental Management (FOREM) , as well as Assistance for Technological Development, Tohoku Construction Association . The authors would like to gratefully appreciate their supports.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.coastaleng.2014.01.002[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]