Kajian Kerentanan Pesisir Terhadap Kenaikan Muka Air Laut di Kabupaten Subang

Handiani, Dian Noor; Darmawan, Soni; Heriati, Aida; Aditya, Yohanes D

doi:10.15578/jkn.v14i3.7583

Cited by 12 publications

(10 citation statements)

References 8 publications

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“…Penelitian yang dilakukan oleh Rahman (2019) menemukan bahwa sejak tahun 1992 hingga 2017 telah terjadi kenaikan muka air laut sebesar 5,5 mm/tahun di perairan Teluk Ambon. Kenaikan muka air laut menyebabkan perubahan garis pantai yang mempengaruhi ekosistem dan kehidupan sosial ekonomi masyarakat pesisir, diakibatkan lebih besarnya energi gelombang laut yang mengempas ke daratan sehingga intensitas bencana di pesisir semakin tinggi (Handiani et al, 2019), antara lain menurunnya kualitas air terutama dengan meningkatnya salinitas di daerah-daerah yang semula tidak terpengaruh kenaikan muka air laut.…”

Section: Pendahuluanunclassified

Kondisi Eksisting Intrusi Air Laut Di Pesisir Latuhalat, Pulau Ambon

Latumeten

Tubalawony

Noya

2023

TRITON

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Seawater intrusion is a problem in coastal areas affecting groundwater quality. Seawater intrusion's impact is thought to have occurred on the coast of Latuhalat, which is indicated by groundwater that tastes brackish in community wells. Consequently, people must buy fresh water to meet their drinking water needs. In addition, seawater intrusion disrupts biodiversity in coastal areas. This study aims to examine the phenomenon of seawater intrusion on the coast of Latuhalat by analysing the conductivity level of groundwater and the area of the coastal area intruded by seawater during the tidal phase. The method used is interpolating physical and chemical parameters and analysing the bicarbonate-chloride ratio based on the Revelle Index. The measurement and analysis of tidal phase data using the interpolation method show that the tide phase increases the electrical conductivity and groundwater chloride values. Electrical conductivity values in the fourteen wells ranged from 446 μmhos/cm to 3236 μmhos/cm, while chloride concentrations ranged from 50 mg/L to 6631 mg/L. Analysis of the bicarbonate-chloride ratio obtained Revelle Index (RI) values ranging from 0.017 to 2.321, which indicates that seawater intrusion occurs from low to medium levels. In the coastal area along ± 5 km, it is known that the area of the intruded area in the relatively low to moderate category covers an area of 1.82 km2 (36.4%). The spatial distribution of electrical conductivity and chloride values which are pretty high are concentrated in Omputty Hamlet, where it is strongly suspected that seawater's movement into inland aquifers, which is caused by the geological structure of the Latuhalat area, is exacerbated by the intensity of excessive use of groundwater by the surrounding community. ABSTRAK Intrusi air laut merupakan salah satu permasalahan di wilayah pesisir yang mempengaruhi kualitas air tanah. Dampak intrusi air laut diduga terjadi di pesisir Latuhalat yang diindikasikan oleh air tanah yang terasa payau pada sumur masyarakat. Sebagai konsekuensinya, masyarakat harus membeli air tawar untuk memenuhi kebutuhan air minum. Selain itu, intrusi air laut mengganggu keanekaragaman hayati di wilayah pesisir. Penelitian ini bertujuan mengkaji fenomena intrusi air laut di pesisir Latuhalat melalui analisis tingkat konduktivitas air tanah dan luasan daerah pesisir yang terintrusi air laut selama fase pasang surut. Metode yang digunakan yaitu interpolasi parameter fisika dan kimia, serta analisis rasio klorida bikarbonat berdasarkan Revelle Index. Hasil pengukuran dan analisa data fase pasang surut air laut dengan metode interpolasi menunjukkan fase pasang air laut berpengaruh meningkatkan nilai daya hantar listrik (DHL) maupun klorida air tanah. Nilai DHL pada keempat belas sumur mulai dari 446 μmhos/cm hingga 3236 μmhos/cm, sedangkan konsentrasi klorida mulai dari 50 mg/L hingga 6631 mg/L. Analisis rasio klorida bikarbonat mendapatkan nilai Revelle Index (RI) mulai dari 0,017 hingga 2,321 yang menandakan bahwa intrusi air laut terjadi mulai dari tingkat rendah hingga menengah. Pada area pesisir sepanjang ± 5 km, diketahui luasan wilayah yang terintrusi dengan kategori agak rendah hingga sedang mencakup area seluas 1,82 km2 (36,4%). Distribusi spasial nilai DHL dan klorida yang cukup tinggi terkonsentrasi terdapat di Dusun Omputty, dimana kuat dugaan pergerakan air laut ke akuifer daratan yang disebabkan oleh struktur geologi daerah Latuhalat diperparah oleh intensitas penggunaan air tanah berlebih oleh masyarakat sekitar. Kata Kunci: Intrusi air laut, air tanah, wilayah pesisir, pasang surut, Latuhalat

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Section: Pendahuluanunclassified

Kondisi Eksisting Intrusi Air Laut Di Pesisir Latuhalat, Pulau Ambon

Latumeten

Tubalawony

Noya

2023

TRITON

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“…A previous study (Dasanto, 2010) predicted that the sea level will rise 0.5 to 1 meter in 2050 and 2100 during flood tides. However, higher sea surface levels and wave inundation contribute to increased coastal hazard potency (Handiani, 2019).…”

Section: Coastal Vulnerability Assessment Based On Coastal Elevation ...mentioning

confidence: 99%

Gis-Based Assessment of Coastal Vulnerability in the Jatabek (Jakarta, Tangerang, and Bekasi) Region, Indonesia

RAHMAWAN¹,

DHIAUDDIN²,

WISHA³

et al. 2022

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JATABEK (Jakarta, Tangerang, and Bekasi) is a significant area where massive developments are concentrated in the coastal region, becoming the center of industry. Due to the vulnerable coastal area, threats of hazards and disasters are undoubtedly avoided. Therefore, assessing coastal vulnerability is crucial to identifying the potency of coastal damages throughout the JATABEK coastal zone. This study examines six primary parameters (geomorphology, elevation and slope, land use, rigid structure, and coastline changes) to determine the coastal vulnerability in the study area using GIS-based and scoring assessments. The coastline change is quantified based on Modified Normalized Difference Water Index (MNDWI). The scored parameters are then analyzed using Coastal Vulnerability Index (CVI) to gain the distribution of vulnerability levels in the study area. Of particular concern, 42.27% of the JATABEK coastline is categorized as a less vulnerable area. In contrast, 31.59% and 11.45% of the coastal area are categorized as high and very high vulnerability, concentrated in the Bekasi Regency and a little part of Tangerang. The remnant categories are moderate (9.56%), and very low (1.73%) vulnerability observed in the Tangerang and eastern part of Jakarta Bay. The presence of permanent artificial structures, land elevation and slope, and land use changes are the most impactful factors determining coastal vulnerability in the study area. Therefore, mitigation efforts are crucial to stabilize the overwhelming abrasion and deal with tidal flooding events in the vulnerable areas.

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“…Sebagai negara tropis dan kepulauan terluas di dunia, dampak perubahan iklim sudah dirasakan Indonesia, baik pada wilayah daratan maupun pesisir (Isdianto & Luthfi, 2020). Bukan hanya dampak sosial ekonomi Ulfa (2018), tapi juga dampak lingkungan seperti akresi dan erosi di sepanjang garis pantai akibat kenaikan muka air laut sebagai dampak perubahan iklim global (Handiani, 2019).…”

Section: Pendahuluanunclassified

Enlightening the coastal communities of Bengkalis Island on climate change policies

Zulkifli

Hakim

Amelia

2021

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Coastal communities are some of the most vulnerable groups to the effects of climate change. The Non-Governmental Organization of the Environmental Malay Youth Institute (LSM IPMPL), a partner of the three villages on Bengkalis Island, has traced the communities’ ignorance of climate change policies to the poor digital literacy of community members. This has had an impact on the involvement of community components and local village governments in climate change mitigation and adaptation efforts. This community service provides assistance, socialization, and training to improve the literacy of the coastal communities of Bengkalis Island, especially as it concerns their access to climate change policies. The results of this activity show an increase in the communities’ knowledge, abilities, skills, and digital awareness of the government's efforts towards forming a climate-resilient society. Furthermore, the activity produced social impact as it increased peace, improved the community's economy and improved the quality of the community's living environment.

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Kajian Kerentanan Pesisir Terhadap Kenaikan Muka Air Laut di Kabupaten Subang

Cited by 12 publications

References 8 publications

Kondisi Eksisting Intrusi Air Laut Di Pesisir Latuhalat, Pulau Ambon

Kondisi Eksisting Intrusi Air Laut Di Pesisir Latuhalat, Pulau Ambon

Gis-Based Assessment of Coastal Vulnerability in the Jatabek (Jakarta, Tangerang, and Bekasi) Region, Indonesia

Enlightening the coastal communities of Bengkalis Island on climate change policies

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