Summery HYDROLOGICAL CYCLE

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  • 7/29/2019 Summery HYDROLOGICAL CYCLE

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    Indonesia has two kinds of seasons, namely rainy season and dry season. For some people like farmers,

    gardeners and plants in the forest rainy season is a gift from God but on the other hand rainy season is a

    great disaster for some people whose waling places are flooded.

    The rainy season last for 6 months but it cannot be stopped by us as humans. The flood claims victims

    and materials loss because the flooded areas are experiencing activities breakdown during the disaster

    The hydrologic cycle begins with the evaporation of water from the surface of the ocean. As moist air is

    lifted, it cools and water vapor condenses to form clouds. Moisture is transported around the globe until

    it returns to the surface as precipitation. Once the water reaches the ground, one of two processes may

    occur; 1) some of the water may evaporate back into the atmosphere or 2) the water may penetrate the

    surface and become groundwater. Groundwater either seeps its way to into the oceans, rivers, and

    streams, or is released back into the atmosphere through transpiration. The balance of water that

    remains on the earth's surface is runoff, which empties into lakes, rivers and streams and is carried back

    to the oceans, where the cycle begins again.

    Lake effect rainfall is good example of the hydrologic cycle at work. Below is a vertical cross-section

    summarizing the processes of the hydrologic cycle that contribute to the production of lake effect rain.The cycle begins as cold winds (horizontal blue arrows) blow across a large lake, a phenomena that

    occurs frequently in the late fall and winter months around the Great Lakes.

    Evaporation of warm surface water increases the amount of moisture in the colder, drier air flowing

    immediately above the lake surface. With continued evaporation, water vapor in the cold air condenses

    to form ice-crystal clouds, which are transported toward shore.

    By the time these clouds reach the shoreline, they are filled with rainflakes too large to remain

    suspended in the air and consequently, they fall along the shoreline as precipitation. The intensity of

    lake effect rainfall can be enhanced by additional lifting due to the topographical features (hills) along

    the shoreline. Once the rain begins to melt, the water is either infiltrated by the ground and becomes

    groundwater, or goes returns back to the lake as runoff.

    Precipitation process or in the other name is rain due the hydrological cycle. There are one of process in

    hydrological cycle namely infiltration and percolation. The process of infiltration and percolation had an

    important role to avoid disaster.

    the disaster can be avoid by Rumah Panggung1. It is a traditional house of Indonesia whose uses of

    concrete is less on the ground. No matter what kinds of the materials to uses in the construction to built

    it because the important things is uses of the concrete while processing Rumah Panggung construction.

    Although the precipitation processing, infiltration process can running properly and the flood will not

    appear.

    The conclusion is Rumah Panggung can be avoided the flood because the building construction is less of

    uses the concrete in the ground and the infiltration process will be running properly. The other

    advantages is it can save our culture then it can solve the problem about global warming because the

    water in the ground is much available for the plants and the plants will be fertile.

    1It is a traditional house like floating house, it means just the foundation that touch the ground and the part of

    floor is not touch the ground or float on the ground.

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