CUT SLOPE MEASUREMENT
slope is an element of topography and erosion factor. Slope occurs due to changes in the earth's surface caused by a variety of forces occurring endogenous and exogenous, resulting in differences in the points where the height above the earth's surface. Knowing the slope of the slope is important for the implementation of planning and development needs, especially in the field of soil and water conservation, among others, as a factor that controls erosion and determine land capability class. Large slope expressed in degrees (o) or percent (%). To determine the slope can be measured by several methods or tools among other methods: Equipment Type-A (ondol-ondol), Abney level, and clinometer. Morphology of the study area based on topography and slope of the slope can be divided into seven (7) units of morphology, namely:
1. plain
An alluvial plain area and local beach and river in the southwest is a hilly ridge slope, slope shape is generally flat to very gently sloping terrain with a slope of between 0-5% (0-3%), renewal altitude in the north between 0-25 m asl and in the southwestern baguan altitude between 225-275 m above sea level. Widespread deployment of approximately 164.9 km2 (42.36%) of the entire study area.
2. Wavy area
This unit is generally a ridge morphology, the foot hills and river valleys, to have a smooth surface with undulating terrain slope 5-10% (3-9%), altitude between 25-200 m asl. Widely spread around 68.09 km2. (17.36%) of the entire study area.
3. Hills sloping ramps
Morphological unit is the foot hills and ridge, to have a wavy surface with a gentle slope 10-15% with heights of 25-435 m above sea level. Widespread deployment of approximately 73.31 km2 (18.84%) of the entire mapping area.
4. Somewhat Steep hills belereng
This is a morphological unit slopes and hilltops with a rather steep slope, has a slope between 15-30%, altitude between 25-445 m asl. Widely spread around 57.91 km2 (14.8%) of the entire study area.
5. Steep sloping hills
This is a morphological unit slopes and hilltops with steep slopes, has a slope between 30-50%, altitude between 40-325 m asl. Widely spread around 17.47 km2 (4.47%) of the entire study area.
6. Very Steep hill slope
This is a morphological unit hillsides and river banks with very steep slopes, has a slope between 50-70%, altitude between 45-165 m asl. Spread widely around 2.26 km2 (0.58%) of the entire study area.
7. Steep sloping hills
Morphological units is generally a river cliff with a steep slope, sloped> 70%, altitude between 100-300 m above sea level. Spread widely around 6.45 km2 (1.65%) of the entire study area.
Type-A tool commonly called ondol-ondol is a simple slope measuring device. It is made of two pieces of bamboo or wood were tied loosely at the two ends so mudaha driven. Equipment installed in the middle of a transverse rafters so that it looked just like the letter A. This tool comes with extras such as lat beberpa thread hanger so it can be used to measure the slope somewhere.
Abney level is a slope measuring device, shaped like a pair of binoculars, a length of approximately 15 cm, weight 150 g. This tool consists of several parts: the body (metal), water-filled glass tubes penuhbila not driven water bubbles will appear called nivo, scale slope, and shoot the gap.
1. plain
An alluvial plain area and local beach and river in the southwest is a hilly ridge slope, slope shape is generally flat to very gently sloping terrain with a slope of between 0-5% (0-3%), renewal altitude in the north between 0-25 m asl and in the southwestern baguan altitude between 225-275 m above sea level. Widespread deployment of approximately 164.9 km2 (42.36%) of the entire study area.
2. Wavy area
This unit is generally a ridge morphology, the foot hills and river valleys, to have a smooth surface with undulating terrain slope 5-10% (3-9%), altitude between 25-200 m asl. Widely spread around 68.09 km2. (17.36%) of the entire study area.
3. Hills sloping ramps
Morphological unit is the foot hills and ridge, to have a wavy surface with a gentle slope 10-15% with heights of 25-435 m above sea level. Widespread deployment of approximately 73.31 km2 (18.84%) of the entire mapping area.
4. Somewhat Steep hills belereng
This is a morphological unit slopes and hilltops with a rather steep slope, has a slope between 15-30%, altitude between 25-445 m asl. Widely spread around 57.91 km2 (14.8%) of the entire study area.
5. Steep sloping hills
This is a morphological unit slopes and hilltops with steep slopes, has a slope between 30-50%, altitude between 40-325 m asl. Widely spread around 17.47 km2 (4.47%) of the entire study area.
6. Very Steep hill slope
This is a morphological unit hillsides and river banks with very steep slopes, has a slope between 50-70%, altitude between 45-165 m asl. Spread widely around 2.26 km2 (0.58%) of the entire study area.
7. Steep sloping hills
Morphological units is generally a river cliff with a steep slope, sloped> 70%, altitude between 100-300 m above sea level. Spread widely around 6.45 km2 (1.65%) of the entire study area.
Type-A tool commonly called ondol-ondol is a simple slope measuring device. It is made of two pieces of bamboo or wood were tied loosely at the two ends so mudaha driven. Equipment installed in the middle of a transverse rafters so that it looked just like the letter A. This tool comes with extras such as lat beberpa thread hanger so it can be used to measure the slope somewhere.
Abney level is a slope measuring device, shaped like a pair of binoculars, a length of approximately 15 cm, weight 150 g. This tool consists of several parts: the body (metal), water-filled glass tubes penuhbila not driven water bubbles will appear called nivo, scale slope, and shoot the gap.
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