Landsat and Spot satellite images can help find the cause of flooding York: Landsat and Spot satellite images having high spatial and spectral resolution can help find the causes flooding, erosion and landslides in the watershed ecosystem (DAS).

"The two images are able to monitor changes in land use in the watershed ecosystem, for example due to illegal logging and mining of sand and stone quarrying in protected areas," said Prof Dr Gunawan Totok MS in inaugural speech Professor of Geography Faculty of the University of Gadjah Mada (UGM) in Yogyakarta, Thursday.

According to him, the role of Landsat and Spot satellite images ysang has advantages in spatial and spectral resolution assist in the provision of regional data in determining the location of Watershed Observer Station (SPAS) for monitoring floods, sediment, and waste, because of its ability to describe the character of the watershed ecosystem Digital.

"Management Information Systems (MIS) flood and drought that is supported by the use of Landsat and Spot satellite imagery can be used as an early warning system framework floods and droughts," said the man born in Klaten, January 3, 1951 it.

In addition, the integration of Landsat and Spot satellite imagery with geographic information systems (GIS) are able to map and make attractive display areas prone to floods and droughts, the symptoms of erosion, and landslides.

"By knowing the source of the flooding of land and sediment expected to be used as a basis for giving advice on which one supposed dihijaukan land as water catchment areas," he said.

Apart from Landsat and Spot satellite images, according to him, Ikonos and Quickbird satellite imagery having high temporal resolution is also capable of monitoring changes in land that is prevalent these days due to the conversion of land into housing in the suburbs as the cause of flooding.

Both satellite imagery that has a high spatial and temporal reslusi, so as to keep pace with changes in land within the period of weekly even daily.

"The integration of both the satellite imagery with GIS is able to determine where the location of the relatively long bridge and river bank erosion and monitoring areas prone to flood inundation and drought-prone, even areas prone to diseases related to environmental health," he said.

He argues, flood events that occurred in urban areas, such as Jakarta, Solo, Yogyakarta and Bandung due semenisasi yard and road pavement in the compound.

On the other hand, floods are common in coastal urban areas such as Jakarta and Semarang caused by a housing development on former swamp land, poor drainage, and frequent sea-level rise (rob).

He said the satellite imagery that could offset the speed of housing development in urban areas are quite tight and it is dynamic and Quickbird Ikonos satellite imagery.

"Through satellite imagery that can be mapped patterns of housing development and spatial distribution, so that the spatial-temporal predictable ecological areas which have high runoff discharge, which according to the basic structure and function of the space is actually a water catchment areas