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Contrasting Climate Induced Variability of the Upper Citarum River Baseflow and Eventflow during Early 20th Century and Recent Decades
Sudradjat A.a, Muhamad B.a, Nurohman F.a
a Research Center for Infrastructure and Regional Development, Institut Teknologi Bandung, Bandung, 40132, 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]© 2020 The Authors, published by EDP Sciences.Recorded daily flow data of the upper Citarum River from 24 October 1918 through 23 October 1935 and from 24 October 1976 through 23 October 2015 from the Nanjung Station, located near the river’s outlet, is investigated for its baseflow and eventflow variabilities. Statistical analysis detects no trend in daily flow and baseflow during the study periods. However, baseflow variability during the latter period is higher than during the former period and is found to be related with the El Niño/Southern Oscillation (ENSO) events. By applying a novel approach of analysing decadal values of separated eventflow, an increasing value of the upper Citarum River basin runoff coefficient from 34 % to 41 % (up to a 20 % increase from the initial value) during a period between 1980 and 2009 (especially after 1990) is overlapping with massive land use and land cover changes during the period. Analysis on rainfall-baseflow variability shows that, after 1990, computed baseflow variability is increasingly more sensitive to rainfall variability.[/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]20th century,Baseflows,Flow data,Land use and land cover change,Rainfall variability,River basins,Runoff coefficients[/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][/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][{‘$’: ‘This research was supported by the Institut Teknologi Bandung (ITB) World Class University research program (grant LPPM. PN–11–04–2016) to the Research Center for Infrastructure and Regional Development, ITB (RCIRD). We acknowledge the Indonesian Ministry of Public Work and Housing for the upper Citarum River daily flow data from the Nanjung Station, the Indonesian Meteorological, Climatological, and Geophysical Agency for daily rainfall data for the upper Citarum River basin, and the West Java Province Development Planning Council for land use and land cover maps of the upper Citarum River basin. The daily rainfall data was provided through Mr. Lufiandi of the West Java Province Environmental Offices. The views, opinions, and findings contained in this paper are those of the authors and should not be construed as an official ITB or Indonesian government position, policy, or decision. The authors declare no conflict of interest.’}, {‘$’: ‘This research was supported by the Institut Teknologi Bandung (ITB) World Class University research program (grant LPPM. PN-11-04-2016) to the Research Center for Infrastructure and Regional Development, ITB (RCIRD). We acknowledge the Indonesian Ministry of Public Work and Housing for the upper Citarum River daily flow data from the Nanjung Station, the Indonesian Meteorological, Climatological, and Geophysical Agency for daily rainfall data for the upper Citarum River basin, and the West Java Province Development Planning Council for land use and land cover maps of the upper Citarum River basin. The daily rainfall data was provided through Mr. Lufiandi of the West Java Province Environmental Offices. The views, opinions, and findings contained in this paper are those of the authors and should not be construed as an official ITB or Indonesian government position, policy, or decision. The authors declare no conflict of interest.’}][/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/10.1051/e3sconf/202014803001[/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]