The focus of this study is to identify and describe of a seawater intrusion in confined aquifer modelling in Semarang with a descriptive quantitative analytical method. The results showed potentially experiencing seawater intrusion which increased of 0.575 km 2 /years. Seawater intrusion models divide to 3 models are the western route have a maximum error is 27.9%, then the middle route have the maximum error is 41.1% and the eastern route have the maximum error is 40%. In 2035, the seawater intrusion on western route is predicted about 3.0 km from the coastline, 4 km for middle route, and about 3.25 km for eastern route. This is one of the information that from right now, the management of a groundwater in the confined aquifer in Semarang is necessary to supervise and better and more optimal controlling
The condition of the geological structure, land use, and slope in Trangkil Sukorejo Gunungpati Semarang City’s residential area can influence the occurrence of the landslide. In this study zoning is conducted to identifying the landslide vulnerable area and based on three main parameters that affect the occurrence of land movement, i.e., Geological Structure (A), Slope (B), and land use (C) according to weighted formula H (Weight) = ((0,24xA) + (0,38xB) + (0,38xC)). The result indicates that the southern part of the settlement is relatively safe than the northern part where the landslide vulnerability point is located, there is a fracture that can trigger the water entry through the weathered breccia.
Rawa Pening is a natural lake as a source of water for Tuntang River which is used for hydropower, raw water source, main irrigation water source in Glapan weir located in Grobogan District, Central Java provinces. Rawa Pening will be developed as location of national and international ecotourism. An Optimal Water Resources Management is required with several studies. This study is the beginning of a series of studies planned to determine the potential of embungs and its utilization as flood control, sediment control of Rawa Pening and for reducing weeds growth.
Rivers are major sources of fresh water, which is a basic need in society. The availability of water is affected by river basin characteristics such as rainfall and land cover type. Along with population and economy growth, there has been a change in land use that leads to changes in land cover types, thereby changing the river flow regime and affecting the availability of water in the river. Thus it is necessary to analyse water flow regime changes in the river to determine water availability for proper action plans in the future. Studies on these aspects were conducted in the Kapuas River Basin with an area of about 100 000 km2, in West Kalimantan, Indonesia. The study was conducted by analysing the trend of annual rainfall and change of land cover during the last three decades, by analysing land cover types and comparing the availability of water in the Kapuas River from measurement results in 2002 and 2012. The results showed that the rainfall trend had increased 4.3% over the last 30 years. The changes in the hydrological aspects of the study area have altered the river flow regime of Kapuas River within the last 30 years and have influenced river water availability. Copyright © 2017 John Wiley & Sons, Ltd.
Abstract. This research is conducted in the district of Banyumanik Semarang. The objectives of this study are; (a) recognising the distribution of landslide-prone residencies in the district of Banyumanik; (b) recognising the community efforts in dealing with their landslide-prone residency environment. The sample is taken by Purposive Sampling Technique, i.e. by considering the possibility of an area to landslide. The researched variables are (1) Physical parameter of landslide-prone field in residency environment, (2) The efforts accomplished by the community to overcome landslide-prone environment. The result of this research has varied in five categories. They are residencies with very high, high, medium, low and very low of landslide-prone. Two countermeasures from the community to prevent landslide are; (1) physical prevention, covering: constructing embankments and drainage channels, sealing/covering cracks on the ground, building blocks, planting hardwood plantations, and (2) partnership prevention, a cooperation between the community with the related institution, such as disaster socialization and land use planning. IntroductionIn consideration of establishing the synergy of the nature productivity and sustainability, the development of settlements needs to be integrated directed. Choosing the right location for the settlement has a strategic meaning, and important in spatial aspect [1]. This may also determine the lastingness of the building, its economic value, and its impact on the surrounding environment.The yearly increase of Indonesian population has brought its consequence towards the increasing needs of settlements as living space. In contrast, the limited land for housing has caused many buildings and facilities constructed on unfavorable locations, where the inhabitants may get endangered for they are located in a disaster-prone landslide area.Landslides occur because of the movement of land or rocks along or out of the slopes due to gravity. Landslide is caused by three main factors: (1) Inherence factors, cover the depth of rocks weathering, geological structures, soil solum thickness, soil texture, and soil permeability. (2) External factors of an area, such as, the incline of hill, number of steep walls, the incision density, and land use. (3) Prompt factors, the high intensity of rainfall, and earth quakes [2].It requires a regional information in any regional development planning, whether for resettlement or other uses. Thus, considering a continuously changing of information, therefore, a quick storing, as well as editing, and analyzing system is needed.
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