Abstract
Siombak lake (28 ha area) was a salty lake located in Medan coastal, Indonesia. Water fluctuation influenced by the sea tide. Therefore, it needed to do morphometry dynamical study as the first impression of lake physical characteristic. The purpose of this study was to understand the dynamical of Siombak lake morphometry. The research was done in September 2016. Lake mapping was done by making 100 line zig zag and draw with ArcMap. Bathymetry showed that the bottom of the lake was sloping at the center part of west and southeast of the lake, and steeping at north, south and east. Siombak Lake has shoreline length 2,535.78 m, with SDI value 2.70. Maximum length 756 m, with maximum width 246.15 m. Lake maximum depth was 17.7 m at MSL, 18.98 m at highest tide and 16.71 m at lowest tide, with average depth 5.33 m at MSL, 6.30 m at highest tide and 4.30 m at lowest tide. Lake volume was 783,607.16 m3 at MSL, 829,395.52 m3 at highest tide and 355,544.14 m3 at lowest tide, with water debit around 32.50 – 50.17 m3s-1. Water retention time was ± 4.33 – 6.75 hours
Highlights
Lake was a water body that flooded along the year that formed naturally or artificially
The impression of shape and lake formation could be determined with morphometry (Hakanson, 1981; Wetzel and Liken, 2000)
Lake morphometry played the important role of factors causing changes in lake biological and chemical process (Hakanson, 2005)
Summary
Lake was a water body that flooded along the year that formed naturally or artificially. Could form by tectonic force, volcanic, glacier, rock decomposition (namely karst lake), flooded expose (oxbow lake), meteoroid fall etc (Loffler, 2004; Tundisi and Tundisi, 2011). Lake has specific morphology and structure that depend on basin form, physical and chemical characteristics, biological and environment interaction (Loffler, 2004; Hakanson, 2005; Barroso et al, 2014). The impression of shape and lake formation could be determined with morphometry (Hakanson, 1981; Wetzel and Liken, 2000). Morphometry could be describing the potential of biological production, and determine the sensitivity level to materials load from surrounding area (Hakanson, 2005; Barroso et al, 2014)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
