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The flood points distribution in Dibal Village from 2019 to 2023 Iemaaniah, Zuhdiyah Matienatul; Qomariyatuzzamzami, Latifah Nurul; Zamani, Muhammad Zaki
BUMI: International Journal of Environmental Reviews Vol. 1 No. 01 (2023): BUMI: International Journal of Environmental Reviews
Publisher : UIN Sulthan Thaha Saifuddin Jambi, Pusat Kajian Lingungan Hidup

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30631/bumi.v1i01.1902

Abstract

Floods are natural disasters that commonly occur in tropical countries like Indonesia. Floods often happen in low-lying areas densely populated by residents. The amount and intensity of rainfall have a significant impact on the occurrence of floods at specific points. Population growth and urban development have led to rapid construction, reducing areas for rainwater absorption. This study was conducted in Dibal Village, Ngemplak District, Boyolali Regency, which directly borders Surakarta City. The area has three important facilities as supporting facilities for the region. This research aims to determine the distribution and causes of floods in Dibal Village over the past five years.This research utilized spatial data, analyzed qualitatively using a descriptive approach. Research data were obtained from in-depth interviews and presented in a flood distribution map of Dibal Village. The results of this study identified flood points in Beran Hamlet, North Dibal Hamlet, Central Dibal Hamlet, South Dibal Hamlet, and North Wangkis Hamlet. Among these hamlets, the most severely affected by floods is Beran Hamlet, with flood depths ranging from 30-50 cm and a receding time of 5-9 hours. Meanwhile, North Dibal Hamlet experienced flood depths of 10-30 cm with a receding time of 3-7 hours, Central Dibal Hamlet had flood depths of 10-20 cm with a receding time of 3-5 hours, South Dibal Hamlet had flood depths of 15-25 cm with a receding time of 3-5 hours, and North Wangkis Hamlet had flood depths of 10-25 cm with a receding time of 3-9 hours
Analysis of Upwelling Parameters when the El Nino Southern Oscillation (ENSO) Occurred in the Halmahera Sea Marthinus, Libertinus; Avrionesti, Avrionesti; Haryanto, Yosafat Donni; Qomariyatuzzamzami, Latifah Nurul
Tropical Marine Environmental Sciences Vol. 2 No. 2 (2024)
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/tromes.2.02.36-41

Abstract

Upwelling events that occur in the Halmahera Sea are influenced by the El Nino Southern Oscillation (ENSO). Upwelling can cause sea surface temperatures to be lower than normal, affecting the potential of fishery resources in the region. The purpose of this study was to determine the conditions of sea surface temperature, chlorophyll-a content, salinity, and upwelling conditions when viewed from the parameters of chlorophyll-α content and sea surface temperature when El Nino was strong, El Nino was weak, La Nina was strong, and La Nina weak and in normal conditions in the Halmahera Sea region. The data used in this study include the Oceanic Nino Index, sea surface temperature, salinity, and chlorophyll-α content during the 2010–2019 period. A quantitative descriptive research type is used by filtering ENSO data to determine when ENSO occurred, then visualizing the data in each parameter and analyzing it. The results of this study show that upwelling is known to occur in the northern to western parts of the Halmahera Sea. When the El Nino phase is vital, the upwelling parameter changes, the sea surface temperature decreases to 27.1⁰C, the chlorophyll-α content increases to 0.70 mg/m3 compared to the normal phase, and the upwelling intensity changes.
CONVERSION OF PRODUCTIVE AGRICULTURAL LAND WITH ANALYSIS OF GEOGRAPHICAL INFORMATION SYSTEMS IN DIBAL VILLAGE, 2010-2020 Iemaaniah, Zuhdiyah Matienatul; Dewi, Rika Andriyani Sukma; Qomariyatuzzamzami, Latifah Nurul; Zamani, Muhammad Zaki
GeoEco Vol 9, No 1 (2023): GeoEco January 2023
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ge.v9i1.71508

Abstract

Land conversion will continue to occur over time. Population growth and regional development can cause land conversion. It is undeniable that land conversion will change vacant land, especially productive agricultural land, into built-up land. The purpose of this study is to determine the extent of changes in productive agricultural land and the conversion of productive agricultural land. Within 10 years Dibal Village has experienced many changes with the construction of toll roads and railroads. The variables for this study are land cover, built-up land and undeveloped land parameters. This study uses image interpretation analysis with Arcgis 10.3 and by doing a ground check to ensure the correctness of the interpretation. To test the accuracy of image interpretation is done with the overall accuracy confusion matrix with the kappa accuracy test results of 98.3% so that image interpretation can be trusted. This research is a qualitative research method with a descriptive approach. The results show that in a period of 10 years in Dibal Village there has been a decrease in productive agricultural land of around 9.69 hectares / 5.70%, while built-up land has increased by 9.69 hectares / 5.70%. The decrease in productive agricultural land consists of a decrease in rice fields and gardens. Productive agricultural land that has changed into built-up land includes rice fields and gardens that have turned into toll roads, railroads and community settlements.