Ketut Wikantika

Bandung Institute of Technology | ITB · Remote Sensing and Geographical Information Sciences, Faculty of Earth Science and Technology

Air pollution refers to the presence of hazardous substances in the air that has adverse effects on health, causing millions premature deaths annually. Ground-based stations can provide accurate measurements for monitoring air pollution. However, the spatial coverage of air pollution measurements is limited by the number of measurement instruments...

Knowledge of the health of banana trees is critical for farmers in order to profit from banana cultivation. Fusarium wilt and banana blood disease (BBD), two significant diseases that infect banana trees, are caused by Fusarium oxysporum and Ralstonia syzygii, respectively. They have caused a decline in crop yield, as they destroy trees, starting s...

The coastal area is an area that has a dense population with a lot of human activities that occur there. Due to environmental changes and human activities, changes often occur in coastal areas ranging from erosion and sedimentation. Changes must continuously be monitored to plan countermeasures due to the occurring phenomena. This study aims to cre...

The potential for future energy crises is a problem the world is currently facing. Many countries are switching from fossil to renewable energy to prevent an energy crisis. One of the most developed renewable energy today is solar energy. Easy installation makes solar energy installation not only on a large scale but also on a home scale. Urban are...

With balanced training sample (TS) data, learning algorithms offer good results in lithology classification. Meanwhile, unprecedented lithological mapping in remote places is predicted to be difficult, resulting in limited and unbalanced samples. To address this issue, we can use a variety of techniques, including ensemble learning (such as random...

Oil and gas exploration in Indonesia currently requires novel methods during the initial screening of exploration areas that are effective, inexpensive, and utilize open data. This is expected to increase exploration interest, which has continued to decrease, and many oil and gas exploration areas will be returned to the government (up to 100 worki...

Takeaway message: Based on the analysis of seagrass beds on the East Coast, it was found that the Random Forest (RF)algorithm has a higher overall accuracy than the Support Vector Machine (SVM), which is 88.00%, while the SVM classification result is 84%. It can be concluded that Sentinel 2A images can be used to detect seagrass beds. However, for...

Knowledge on the health of banana trees is critical for farmers to profit from banana cultivation. Fusarium wilt and banana blood diseases (BDB), two significant diseases infecting banana trees, are caused by Fusarium oxysporum and Ralstonia syzygii, respectively. They have successfully caused a decline in crop yield as they destroy the trees, star...

Lithological information is important in mineral resource exploration, geological observations, mine planning or degradation vulnerability assessment. Currently, lithology mapping can be performed in a fast, inexpensive, and easy way using remote sensing data and machine learning. Remote sensing techniques have become a valuable and promising tool...

Sustainable Development Goal (SDG) number 14 pertains to the preservation of sustainable marine ecosystems by establishing marine protected areas (MPAs). However, studies have reported massive damage to Indonesian marine ecosystems due to shipping pollution, anchors, and fishing nets. Thus, this study estimated the potential loss of ecosystem servi...

Despite the wealth of cultural heritage objects in Indonesia, some of which are considered UNESCO World Heritage sites, more documentation still needs to be done. One of the reasons behind this problem is that the documentation of complex cultural heritage objects is more complicated than most modern objects, which are often more simplistic. This p...

Singkarak Lake has a central role for the surrounding community. To achieve SDGs Goal 6, Singkarak Lake is decided as one of the fifteen lakes to be managed sustainably based on the Indonesian Lake National Conference 2011. Therefore, this research aims to monitor the surface water area of Singkarak Lake using Landsat 5, 7 and 8 surface reflectance...

Climate change has impacted food security in the agricultural sector, resulting in droughts on agricultural land. One of the climate change phenomena is El Nino that occurred in 2015-2016, where this phenomenon has increased global warming by 49% and decreased rice productivity by 2.9%. This study aims to compare crop water requirements in Indon...

Drought is a common, slow-moving disaster that is difficult to pinpoint its beginning and end. As a country located in the tropics, Indonesia is sensitive to the El Nino Southern Oscillation (ENSO) climate anomaly, where this event causes drought. Therefore, this study analyzes the drought in Indonesian rice fields by comparing the 2015 El Nino...

Singkarak Lake has a central role for the surrounding community. To achieve SDGs Goal 6, Singkarak Lake is decided as one of the fifteen lakes to be managed sustainably based on the Indonesian Lake National Conference 2011. Therefore, this research aims to monitor the surface water area of Singkarak Lake using Landsat 5, 7 and 8 surface reflectance...

Optical remote sensing images have been widely used for temporal monitoring. The data is acquired by sensors on satellites with better spatial resolution compared to in-situ measurements by meteorological stations. The problem with utilizing optical images is the cloud, which blocks the ground and near-ground information collected by satellites. To...

Amid its massive increase in energy demand, Southeast Asia has pledged to increase its use of renewable energy by up to 23% by 2025. Geospatial technology approaches that integrate statistical data, spatial models, earth observation satellite data, and climate modeling can be used to conduct strategic analyses for understanding the potential and ef...

Air pollution has massive impacts on human life and poor air quality results in three million deaths annually. Air pollution can result from natural causes, including volcanic eruptions and extreme droughts, or human activities, including motor vehicle emissions, industry, and the burning of farmland and forests. Emission sources emit multiple poll...

Sembilang National Park, one of the best and largest mangrove areas in Indonesia, is very vulnerable to disturbance by community activities. Changes in the dynamic condition of mangrove forests in Sembilang National Park must be quickly and easily accompanied by mangrove monitoring efforts. One way to monitor mangrove forests is to use remote sensi...

Central Sumatra basin is located on Sumatra Island, Indonesia, and is considered an oil prolific basin that produces heavy oil. The basin is believed to have unexplored heavy oil potential. Therefore, this study aims to map the heavy oil potential distribution in the basin using surface and subsurface lineaments analyses interpreted from satellite...

Mangrove ecosystem monitoring aims to provide information on a regular basis to be used as a reference in sustainable management activities in an effort to maintain the functions and services of the mangrove ecosystem. Mangroves have a very high level of threat to exploitation, namely logging and land conversion which can cause increasingly damaged...

Food security is highly dependent on three aspects, namely food availability, food access, and food utilization. The availability aspect depends on food supply which is identical to agricultural productivity. West Java Province is the third national rice producer with 16.6%, but West Java Province is the most extensive rice consumer, around 21.1% o...

The world faces the threat of an energy crisis that is exacerbated by the dominance of fossil energy sources that negatively impact the sustainability of the earth's ecosystem. Currently, efforts to increase the supply of renewable energy have become a global agenda, including using solar energy which is one of the rapidly developing clean energies...

Determining coastal boundaries on land is essential to understanding the process of soil salinization. Once, It can be observed, and the coastal boundaries may help explain these areas' damage levels. This study aimed to observe the change in soil salinity and saltwater intrusion and use both values to determine the coastal boundaries in Subang, In...

The food crisis is a problem that the world will face. The availability of growing areas that continues to decrease with the increase in food demand will result in a food crisis in the future. Good planning is needed to deal with future food crises. The absence of studies on the development of spatial models in estimating an area's future food stat...

Sustainable city planning is one of many countries' 2030 sustainable development goals. In carrying out sustainable urban planning, it is necessary to look at the 3D aspect of the building. However, 3D mapping for large areas is very expensive. So we need an alternative to make three-dimensional buildings in urban areas that are cheaper. This study...

Oil palm phenology has many advantages in managing the sustainability of oil palm plantations. The phenology of oil palms is a key issue in harvest estimation, fruit bunch production, estimating oil palm taxes, replanting, fertilization, and detecting oil palm disease. One of the recently developed methods of oil palm phenology involves the use of...

The study of banana herbs and fruits is rarely conducted using multidisciplinary approaches. However, a multidisciplinary approach could be useful for gaining information on many aspects, including remote sensing, biodiversity and biogeography, owing to the uniqueness of bananas. The present article reviews a study on banana herbs from an Indonesia...

Banana ( Musa acuminata ) is one of the most important crop plants consumed in many countries. However, the commercial value decreases during storage and transportation. To maintain fruit quality, postharvest technologies have been developed. Storage at low temperature is a common method to prolong the shelf life of food products, especially during...

Wildfires drive deforestation that causes various losses. Although many studies have used spatial approaches, a multi-dimensional analysis is required to determine priority areas for mitigation. This study identified priority areas for wildfire mitigation in Indonesia using a multi-dimensional approach including disaster, environmental, historical,...

A landslide susceptibility mapping is essential for landslide hazard mitigation to reduce the associated risk. This paper aims to present the results of the landslide susceptibility modeling in the Citarik sub-watershed using three bivariate statistical-based methods, i.e., frequency ratio (FR), information value (IV), and weight of evidence (WoE)....

Ekosistem mangrove merupakan ekosistem peralihan antara darat dan laut yang memiliki potensi, peran dan fungsi sangat besar dalam kehidupan. Untuk memperoleh informasi keberadaan hutan mangrove yang terbaru dapat diperoleh melalui data penginderaan jauh. Pemanfaatan teknologi penginderaan jauh sangat efisien karena data yang mudah diperoleh dan har...

This study proposes a new model for land suitability for educational facilities based on spatial product development to determine the optimal locations for achieving education targets in West Java, Indonesia. Single-aspect approaches, such as accessibility and spatial hazard analyses, have not been widely applied in suitability assessments on the l...

Landslide susceptibility mapping is an initial measure in the landslide hazard mitigation. This study aims to evaluate landslide susceptibility in the Cisangkuy Sub-watershed, a part of Bandung Basin. Twenty-seven landslide variables were involved in this modeling derived from various data sources. As a target, 25 landslide polygons obtained throug...

Blue carbon ecosystems are key for successful global climate change mitigation; however, they are one of the most threatened ecosystems on Earth. Thus, this study mapped the climatic and human pressures on the blue carbon ecosystems in Indonesia using multi-source spatial datasets. Data on moderate resolution imaging spectroradiometer (MODIS) ocean...

The East Coast of Lampung Province has extraordinary potential, unique potential such as visual appeal. In addition, the coast also has the potential as a residential area, fishery cultivation, ponds, agriculture, ports, tourism and so on. However, behind its potential, the East Coast region of Lampung Province, especially the coastal area, is pron...

A landslide inventory representing landslide locations is used as a key factor in landslide susceptibility assessment. This paper explores Google Earth (GE) for generating a polygon-based landslide inventory in Bandung Basin. How far GE can identify landslides and their boundaries, source areas, and types were discussed here. Visual interpretation...

Increasing the production of clean and environmentally friendly energy has become one of the world agendas as a strategic effort in dealing with long-term climate change. Seeing the potential of the energy produced, the ease in the installation process, with the small risk of harm generated, solar energy has received significant attention from many...

As a significant contributor of plastic waste to the marine environment, Indonesia is striving to construct a national strategy for reducing plastic debris. Hence, the primary aim of this study is to create a model for plastic waste quantity originating from the mainland, accumulated in estuaries. This was achieved by compiling baseline data of mar...

Pendidikan merupakan hak semua orang dan memiliki peran yang sangat penting dalam kehidupan masyarakat, untuk itu kualitasnya perlu ditingkatkan. Poin ke-4 dari Tujuan Pembangunan Berkelanjutan (SDGs) Indonesia bertujuan untuk memastikan kualitas pendidikan yang inklusif dan adil. Diantaranya pada tahun 2030, memastikan bahwa semua orang menyelesai...

Indonesia currently has 269 million people or 3.49% of the world’s total population and is ranked as the fourth most populous country in the world. Analysis by the Ministry of Public Works and Public Housing of Indonesia in 2010 shows that Java’s biocapacity is already experiencing a deficit. Therefore, optimization needs to be done to reduce defic...

Pisang merupakan salah satu komoditas pertanian yang penting dan buahnya dikonsumsi secara global. Indonesia adalah salah satu pusat keragaman, penyebaran atau produsen pisang. Saat ini telah diidentifikasi lebih dari 300 kultivar dan diprediksi lebih dari 1000 kultivar pisang ada di Indonesia. Studi keragaman genetik maupun penyebaran pisang sanga...

COVID-19 is currently the hot topic of conversation because of its ability to spread relatively quickly, in line with everyday human activities. It is unknown exactly the dominant environmental factors and their influence on the spread of COVID-19 in the last four months. Its distribution ability is no longer locally but has succeeded in making sev...

Several techniques have been proposed to observe long-term land surface deformation using phase information of synthetic aperture radar (SAR), for example, interferometric SAR (InSAR), differential interferometric SAR (DInSAR), permanent scatterer interferometric SAR (PS-InSAR), and small baseline subset (SBAS) using images of JERS-1, ALOS-1/2, ENV...

Spatial Modeling for People Forest by Using Remote Sensing-GIS and AHP to Support Rural Municipal Sustainable Development for the SDGs Fahrudin, Ketut Wikantika, Albertus Deliar Bandung Institute of Technology (ITB), Bandung, Indonesia ABSTRACT People forest or non-state forest in rural municipality able to act as lungs that can provide coolness an...

Data Himawari-8 memiliki resolusi temporal yang tinggi sehingga dapat digunakan untuk memantau kondisi atmosfer yang dinamis. Informasi mengenai atmosfer atau kondisi cuaca sangat diperlukan untuk mendukung berbagai aktivitas manusia. Dalam masa pandemi COVID-19, informasi cuaca digunakan untuk mempelajari pola penyebaran COVID-19 terhadap kondisi...

Landslide susceptibility modeling is needed as an effort to mitigate landslides. Modeling was performed using a bivariate statistical approach, namely the frequency ratio (FR) method. The research area is Cisangkuy Sub-Watershed located in Bandung District. The dependent variable is the distribution of landslide locations mapped as areas (polygons)...

Indonesia is the world’s fourth largest coffee producer. Coffee plantations cover 1.2 million ha of the country with a production of 500 kg/ha. However, information regarding the distribution of coffee plantations in Indonesia is limited. This study aimed to assess the accuracy of classification model and determine its important variables for mappi...

Banana is one of the most essential commodities in Bali island. It is not only for nutrition sources but also for cultural and religious aspects. However, Bali banana genetic diversity has not been explored; therefore, in this study, we focused on its genetic relationship using a molecular approach. This research aimed to determine the genetic rela...

Tongka Langit or Fe’i banana (Musa troglodytarum L.) has the T genome and a very high content of beta-carotene. It only grew and spread around the regions of Maluku islands and Papua. However, recently our team found this banana on the foot of mount Galunggung, West Java, so this raised the question about its origin. The objective of this study was...

The decreasing area of mangroves is an ongoing problem since, between 1980 and 2005, one-third of the world’s mangroves were lost. Rehabilitation and restoration strategies are required to address this situation. However, mangroves do not always respond well to these strategies and have high mortality due to several growth limiting parameters. This...

Today the world faces the fact that 10 million tonnes of waste, primarily plastic waste,pas through the river. This global issue has become a serious problem that can be resolved with location-based that utilizesremote sensing technology, following recentdevelopments oftechnology. This study aims to estimate the weight of potential plastic waste at...

In 1997, the worst forest fire in Indonesia occurred and hit mangrove forest areas including in Sembilang National Park Banyuasin Regency, South Sumatra. Therefore, the Indonesian government keeps in trying to rehabilitate the mangrove forest in Sembilang National Park. This study aimed to identify the mangrove forest changing and to predict on the...

In the agriculture sector, proper crop management can enhance yield production. Determination of the chlorophyll content in crop contributes to this significant topic. In this study, the leaves chlorophyll content of local paddy cultivars Inpari 32 and Inpari 33 was estimated and the difference at various days after planting (DAP) was determined. T...

Landscape architecture affected by interaction between built and natural environment such as vegetation. Nowadays, landscape architects are using 3D city models for simulations, which requires highly dynamic and time-varying attributes. 3D city modelling structure has been standardized by CityGML, although researches that are related to the storing...