coastal engineering and management

In this study will be an assessment of the process of sedimentation that result from the interaction of waves, coastal currents, wind, contour Losari beach in Makassar South Sulawesi Province method approach Surface Water Modeling System (SMS ver. 8.0) and the overlay satellite image landsat 7-ETM year 1996 and 2002on Geogrhapic Information System (SIG). Suspended sediment spreding and seabed sediment change analysed by SMS 8.0.The first stage of the analysis had been done by set a limit on the boundary/training area are: longitude coordinates: 1190 21’ – 1190 25’ East and Latitude: 50 7’ – 50 13’ South. The boundary undergoes some adjustment at the both methods that used in this research. Suspended sediment samples taking began from around the delta until the JeneberangRiver (LS1 to LS7). The sediment measuring result was compared by suspended sediment from running result of module SMS (SED2-WES) and overlay analysis result of the image Landsat 7-ETM (1996 and 2002).The supreme current velocity had happened at the LS1(0.079 m/s)and LS2(0.001 m/s). Beside of those,LS4 and LS6 was between 0.00 - 0.03 m/s and thenLS3, LS5 and LS7 was between 0.00 – 0.019 m/s. The suspended sediment concentrationat each site observation had been increase with difference fluctuation according to the tides data. The sediment concentration accumulation until the end of the time step (72) at station LS1 = 8.63 ppm, LS2 = 6.34 ppm, LS3 = 3.28 ppm, LS4 = 3.79 ppm, LS5 = 1.69 ppm, LS6 = 0.94 ppm and LS7 = 0.60 ppm.Moreover the sediment classification resulted measurement result at each class could be getting in: LS1=14.30; LS2=17.00; LS3=3.65; LS4=11.42; LS5=9.12; LS6=5.54 and LS7=6.32. Whereas the result of analysis on landsat image overlay divided up into five classes for image year 1996 (class 1= 0, class 2= 0 – 4.74 ppm; class 3= 4.74-11.85 ppm; class 4= 11.85-12.91; class 5= 12.91-15.35; class 6= 15.35-22.46) and year 2002 (class 1= 0, class 2= 0 – 13.65 ppm; class 3= 13.65-13.98 ppm; class 4= 13.98-14.73; class 5= 14.73-15.59; and class 6= 15.59-18.84 ppm).本研究针对南苏拉威西省望加锡市洛萨里海滩的沉积过程展开评估，该过程由波浪、沿岸流与风力的相互作用引发。研究采用地表水建模系统（Surface Water Modeling System，版本8.0，简称SMS 8.0）作为分析方法，并结合地理信息系统（Geographic Information System，SIG），叠加1996年与2002年的Landsat 7-ETM卫星影像开展分析。 通过SMS 8.0对悬浮泥沙扩散与海底沉积物变化展开分析。本次分析的第一阶段为划定研究区边界/训练区域，其坐标范围为：东经119°21′—119°25′，南纬5°7′—5°13′。本研究采用的两种分析方法对上述边界均进行了一定调整。 悬浮泥沙采样工作覆盖耶内贝朗河河口至海域范围，共设置LS1至LS7共7个采样站位。将现场实测的沉积物测量结果，与SMS模型SED2-WES模块的运行输出悬浮泥沙数据，以及Landsat 7-ETM影像（1996年、2002年）的叠加分析结果进行对比。 研究发现，最大流速出现在LS1站位（0.079 m/s）与LS2站位（0.001 m/s）；其余站位中，LS4与LS6的流速介于0.00—0.03 m/s之间，LS3、LS5与LS7的流速介于0.00—0.019 m/s之间。各观测站位的悬浮泥沙浓度均随潮汐数据呈现波动式上升，在模拟时长步长72的结束时刻，各站位的泥沙浓度累积值分别为：LS1=8.63 ppm、LS2=6.34 ppm、LS3=3.28 ppm、LS4=3.79 ppm、LS5=1.69 ppm、LS6=0.94 ppm、LS7=0.60 ppm。 各站位的沉积物分类测量结果分别为：LS1=14.30、LS2=17.00、LS3=3.65、LS4=11.42、LS5=9.12、LS6=5.54、LS7=6.32。而通过Landsat影像叠加分析得到的结果可划分为6个等级：1996年影像的分类等级为：等级1=0，等级2=0—4.74 ppm，等级3=4.74—11.85 ppm，等级4=11.85—12.91 ppm，等级5=12.91—15.35 ppm，等级6=15.35—22.46 ppm；2002年影像的分类等级为：等级1=0，等级2=0—13.65 ppm，等级3=13.65—13.98 ppm，等级4=13.98—14.73 ppm，等级5=14.73—15.59 ppm，等级6=15.59—18.84 ppm。