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The hydrographic structure along the 137° E line in the western North Pacific from 1990 to 2007
Bernawis L.I.a,b, Nemoto M.a, Yoshida J.a
a Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Japan
b Bandung Institute of Technology, Gedung Labtek XI lt. 1, 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]We examined detailed hydrographic structures data along 137̇ E from 3°N to 34°N from 1990 to 2007 by using CTD. The general oceanic features found along this line agreed well with the results of previous studies using Nansen bottle data. We investigated the activity of double diffusive convection through the histogram plots of the density ratio (Ro) and the Turner angle (Tu) to detect the modification processes of water masses in more detail. The region where the stratification is favourable for the onset of salt finger convection (R0 3.7 and 45°< Tu < 60°) is found just below the bottom half of North Pacific Equatorial Water (NPEW) and North Pacific Tropical Water (NPTW) extending to the upper half of North Pacific Intermediate Water (NPIW). This region existed isopycnally on the surface between 24.0 σ. and 26.8 σ. persistently along 137°E line. The mode value of Ro is 3.48, meaning that the activity of salt finger convection was not so high.[/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][/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]CTD,Double diffusive convection,JMA 137°E section,NPIW core,Salt finger[/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][/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][/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]