FISIOGRPHY OF BALI

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					                        BALI ISLAND ISLAND physiographic & NTT

       Physiographic is seen showing the shape of the earth's surface and the
       formation factor. The process of formation of the earth's surface is seen as a
       unit                        identifier                          physiography.
       And we will discuss now is fisiograf of P.Bali & P. NTT will be presented as
       follows:
       A. Physiographic Bali




                                          Map of Bali Island



     Bali province is mountainous and hilly areas covering most areas. Relief island
of Bali is a mountain chain that extends from west to east. Among the mountains are
still active volcanoes, namely Mount Agung (3142 m) and Mount Batur (1717 m).
Some other inactive mountain reaches a height of between 1000-2000 m. Mountain
chain stretching across the center of the island of Bali lead this region is
geographically divided into two distinct parts, namely North Bali with a narrow
lowland foothills and mountains and South Bali with a broad lowland and sloping.
Judging from the slope of the slope.



     Bali Island is largely made up of land with a slope of between 0-2% to 15-40%.
The rest is a land with a slope of over 40%. As one of the criteria for determining the
suitability of the land, the land with a slope below 40% are generally cultivated for the
By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                                 Page 1
determination of the origin of the other requirements are met land. While the slopes
above     40%      require      attention   when      will     be    the    cultivation.
Land with a slope of 0-2% dominates the southern coastal areas and some small
northern coast of the island of Bali, an area of 96.129 ha. While the land with a slope
of 2-15% are mostly found in the district of Badung, Tabanan, Gianyar, Buleleng, and
the rest spread evenly around the beach area with a wide reach 132,056 ha.


      Areas with a slope of 15-40% covers an area of 164 749 ha is predominantly
found in the central part of the island of Bali, following a row of hills that runs from
west to east region. Areas with a slope exceeding 40% is mountains and hills located
on the island of Nusa Penida.

Judging from the altitude, Bali consists of the following fields:
• Land with a height of 0-50 m above sea level have a fairly gentle surface covering
an area of 77321.38 ha.
• Land with a height of 50-100 m above sea level to have a choppy surface with an
area of 60620.34 ha undulating.
• Land with a height of 100-500 m in an area of 211,923.85 ha dominated by
undulating to hilly surface conditions.
• Land with a height of 500-1000 m above sea level, covering an area of 145,188.61
ha.
• Land with a height of over 1,000 m above sea level, covering an area of 68231.90
ha.




By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                                Page 2
Morphology
                                                   Morphology of Bali Province region
                                                   consists of low-lying coastal areas,
                                                   rivers, swamps, lakes, volcanic plains
                                                   and plains sendimen shaped ramps
                                                   with a slope of 0-5% and a height
                                                   range 0-25 m above sea level.
                                                   Conditions morphology has a small
                                                   surface erosion, and some places are
                                                   areas of abrasion and deposition
process is active, especially in the area of Benoa Bay, Singaraja, and Gilimanuk.
Alivium lake plains with elevations between 1000-1230 meters above sea level is
prone to ground movement such as landslides or soil and rock debris from the
surrounding cliffs. Plain Alluvium Lake Batur has kenungkinan falling boulder-sized
rocks to sand, lapilli and ash in the event of an activity at the volcano.

       Hilly areas with fine to coarse relief with gentle slope to steep (2-70%) at an
altitude of 0-1380 feet above sea level, especially on the cliffs of the river which has a
steep slope (> 70%). The rock consists of sedimentary rocks (compact sand and
conglomerate) and the old volcanic rock composed of volcanic breccias, lavas, tuffs
which are hard and compact. Surface erosion rate small to large. In areas berrelief
moderate abrasion robust enough to some of the areas likely to be mainly on landslide
conglomerate               bedrock               and              steep             cliffs.
Limestone area (Bukit Jimbaran and Nusa Penida) sloped ramps up the rather steep
slopes (3-50%) with several places> 30%, especially on sea cliffs, situated at an
altitude of 0-210 meters above sea level. Erosion surface with several small to
medium abrasion and areas where a potential ground motion in the form disappear.
   Mountains berelief smooth to rough, rock composed of volcanic deposits of
Mount Buyan - Beratan and Mount Batur in the form of lava that is rather compact
and volcanic rocks of Mount Agung in the form of tufa and lava that are somewhat
loose. This area has a slope of between 0-70% and some places have a steep slope,

By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                                  Page 3
especially on the river bank. The area is located at an altitude between 200-300 meters
above sea level. Surface erosion rate is small to large, while abrasion is still active for
fine to medium berelief mountains. Northern and southeastern slopes of Mount Agung
and around Mount Batur is a disaster-prone area. In some places, especially around
the river valley of Mount Agung is tipped in the danger area, the cold lava flow with a
few places is likely landslide area. The flow of lava from Mount Agung spread on the
beach north of the village of Kubu Tianyar to village.

A. Physiographic of NTT Island




TOPOGRAPHY
If we look at the data as listed in the following table, then we will get an overview of
NTT topography as follows:
Area of NTT slope of land
            The slope of the Land Area                        (Ha)
                    Flat (0-2%)                             458.821
                Undulating (2-15%)                          748.602
                  Steep (15-40%)                           1.724.010
                Very Steep (> 40%)                         1.803.558
     Sources: Database Profile NTT
       More than 2/3 the area of East Nusa Tenggara quite steep and very steep areas.
It is also seen in the concentration of population and economic centers of the
community, so that even the average land area to population is actually quite large,

By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                                   Page 4
but with the condition of the existing topography, the population tends to be
concentrated in certain areas within the province.
       NTT topography characteristic also causes the area is prone to landslides and
flooding disasters, especially in Flores, and Timor. When the rainy season arrives,
although the rainy season in the province is only about an average of 4 months, but
that happens every year is a disaster avalanche breakdown and impact on land
transport due to avalanches. Flood and landslide that almost every year into the
problems faced NTT provincial government, especially when the rainy season arrives.
East Nusa Tenggara Province is also an area with a number of Gunung Api is pretty
much the Volcano 11. Among the 11 volcanoes is some work still considered an
active volcano as volcanic Lewo Tobi (men and women), Mount Iya, also of Mount
Egon that some time ago showing activity.
                              Climate Situation in NTT
             Climate Situation                             Rate
             Temperature (ºC)                               26,7
              Air humidity (%)                              77,3
              Rainfall (mm/th)                             265,9
            Wind Speed (Knot)                               3,6
     Sources: Database Profile NTT




In the province of East Nusa Tenggara little land used for forests and rice fields.
Degraded land (land barren and abandoned) and pasture reached 2,391,688 hectares,
exceeding the paddy fields or forests. This is due to the climatic conditions and the
slope    of    the   land     that     is   in    NTT      as    described     above.

By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                             Page 5
Actually, the state of the ground in many areas such as overgrown grass in NTT has a
high humus soil, but due to the dry climate and little rainfall caused the rock
weathering process is slow, and consequently regolitnya thin layer. This situation is
compounded by the circumstances of the steep slope of the land causing landslides or
erosion occurs easily, which erodes fertile soil as humus-rich soil. For those in the
NTT only a fraction of land that can be utilized for paddy.




By: Gumirlang Sucahyo//gumirlangsucahyo@gmail.com                             Page 6

				
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posted:10/6/2012
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