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Gunung Gede Pangrango National Park

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Introduction

Information about Gunung Gede Pangrango National Park Gunung Gede Pangrango National Park is found in south of west Java, Indonesia where the river of Cimacan lies. The park is situated between longitudes 106�51'-107�02' East and latitudes 6�41-6�51' south. It is shared between the regencies of Bogor, Cianjur and Sukabumi. The park is on the island of java. The park can reach about 1000 to 3000 meters above sea level, has an area of 15 000 hectares and more than 80% covered by forest. Indonesia is located in the Asian Archipelago, the world's largest archipelago, between Indochina and Australia, between the Indian and Pacific Oceans. Gunung Gede Pangrango National Park was one of the first national parks to be established in Indonesia, and established under a declaration made by the Minister of Agriculture for "The Republic of Indonesia" on 6 March, 1980. Since then many Indonesian and foreign scientists have visited the national park and, as a result these mountains are one of the most well researched tropical forest systems in the world. Gunung Gede Mountain is 2,958 meters high and it is a part of the volcanic chains that is from Sumatra to Sunda. The river Cimacan flows down the Gede volcano. The Annual rainfall in the Gunung Gede national park is pretty high. The average is in the range of 3.000- 4.200 mm per year, making the area one of the wettest parts of Java. The rainy season occurs from October to May, the monthly average of 200 mm rising to over 400 mm in the period from December to March. The dry season occurs from June to September, rainfall dropping to below 100 mm per month. So we can say that the river of Cimacan Hypothesis Measurements we will take: * River Depth * River Velocity * Bed load size - Short axis -Long axis * Bed load angularity * River gradient (angle of slope) ...read more.

Middle

Depth 0.00 0.00 0.22 -0.22 0.44 -0.10 0.66 -0.18 0.88 -0.25 1.10 -0.41 1.32 -0.39 1.54 -0.38 1.76 -0.32 1.98 -0.13 2.20 -0.12 2.42 0.00 Table to show Depth Measurements at SITE 4 Distance from LHB (m) Depth 0.00 0.00 0.40 -0.62 0.80 -0.91 1.20 -0.78 1.60 -0.82 2.00 -0.32 2.40 -0.78 2.80 -0.13 3.20 -0.48 3.60 -0.26 4.00 -0.18 4.40 0.00 Velocity Measurements Table to show velocity measurements at SITE 1 Distance from LHB (m) Velocity (m/sec) 0.00 0.00 0.53 0.07 1.06 0.11 1.59 0.33 2.12 0.07 2.65 0.01 3.19 0.00 Table to show the velocity measurement at SITE 2 Distance from LHB (m) Velocity (m/sec) 0.00 0.00 0.37 0.30 0.74 0.29 1.11 0.32 1.48 0.65 1.85 0.33 2.22 0.00 Table to show the Velocity Measurements at SITE 3 Distance from LHB (m) Velocity (m/sec) 0.00 0.00 0.40 0.00 0.80 0.26 1.20 0.13 1.60 0.16 2.00 0.08 2.42 0.00 Table to show Velocity Measurements at SITE 4 Distance from LHB (m) Velocity (m/sec) 0.00 0.00 0.40 0.46 0.80 0.78 1.20 0.55 1.60 0.22 2.00 0.31 2.42 0.00 River Bed load Measurements Location Average long Axis (cm) Average Short Axis (cm) SITE 1 7.1 4.6 SITE 2 5.6 4 SITE 3 5.8 4.4 SITE 4 3.5 2.7 Degree of angularity A table to show the different locations and sites of Degree of angularity Location 1 2 3 4 5 6 SITE 1 3 8 23 11 3 2 SITE 2 2 7 15 14 8 4 SITE 3 0 7 10 19 9 5 SITE 4 1 2 9 18 12 8 Slope Angle Measurement Slope angle measurement (in degrees) SITE 1 14 SITE 2 11 SITE 3 9 SITE 4 7 Analysis on the Depth Measurement Analysis of the Rivers Velocity 00 But as the other's data can shows us a pattern that rivers velocity increases as rivers downstream, so it still support my hypothesis. ...read more.

Conclusion

will take place. I can prove this even further by the graphs and tables I created as it shows a great representative to show that as the river flow downstream the bed load size decreases. The figures 4.6, 3.19, 2.5 are the tables that I created from the data obtained it is very useful because we can see the figures of the bed load decreasing this helps because then we can determine that it decreases drastically or moderately or gradually decreasing. The figures 3.6, 3.7, 3.8, 3.9 are the graphs and pie charts that I created from the tables these are again useful as it can give a visual of how much bed load size decreases and can show which site has the biggest difference or similarities. From the pie chart it also shows the percentage of bed load angularity, this helps because then we can ideally see how from Site 1 to Site 4 it progresses, how the "more well rounded, class 6" increases and the "very angular, class 1" decreases its value. In conclusion I believe that all hypotheses were correct. However I think we need to consider about our recording of measurements, because from all the 4 sites "Site 3" is the anomaly from the others it shows awkward data presentation that does not go with the pattern of the other 3 sites which invalidate my hypothesis. So I assume that there might be errors of miscalculating or carelessness in measurement but other than that I believe the other sites measurement were a success and helped me proof my entire hypothesis. To improve even further I would take regular visits to the river to double check the results and measurements we have and to be much more careful of recording data. Another way to know the River of Cimacan in further detail, is that I would visit the river occasionally, at a rainy season, summer, to know if there are any changes to the data due to changes in seasons. ?? ?? ?? ?? ...read more.

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