Khomsin Khomsin

Faculty of Civil Environment and Geo Engineering - ITS Surabaya

Making a nautical chart for safe navigation is a bathymetric survey’s primary goal. Multifrequency MBES have been developed over the last few decades, and their introduction has dramatically improved the efficiency, accuracy, and spatial resolution of coastal and ocean mapping. The goal of multifrequency MBES is to increase the subsurface’s detecti...

Parameter suhu permukaan air danau atau Lake Water Surface Temperature (LSWT) merupakan salah satu indikator penting dalam pemantauan lingkungan perairan seperti sebagai parameter perubahan iklim dan kerusakan lingkungan akibat aktivitas manusia. Berbagai metode dalam penentuan LSWT telah diterapkan namun yang paling representatif adalah pengambila...

Maritime and territorial zone disputes have created tensions and conflicts between countries with contiguous or adjacent maritime zones. France escalated its fishing rights dispute with the UK by announcing that it had seized an unlicensed British vessel operating in French waters. This paper examines the incident by reviewing the geographical cond...

Water transportation plays a vital role in global economic activities, facilitating more than 85% of international trade and serving as a cost-effective and essential means to fulfill the demand for goods and services. Similarly, the Benoa Port, situated in the southern part of Denpasar City, operates in the same manner. By utilizing Multibeam Echo...

Since the Soviet Union dissolved in 1991, Russia and Ukraine, newly independent, face complexities concerning the legal status and demarcation of the Sea of Azov. Spanning approximately 37,600 km2 with a maximum depth of 14 meters, this sea holds pivotal resources such as fish, gas, and oil, serving as a significant dividing point between these nat...

This study investigates the classification of sediment distribution and types in inland waters using Artificial Neural Network (ANN) models based on multibeam echosounder data. Multibeam Echosounder Technology (MBES) is an acoustic instrument that emits high-speed sound pulses to map the bottom of water bodies. Valuable information about sediment c...

Principally, for a few decades, hydrographical surveys have been only to determine the depth of seawater. Sonar measurement tehcnology is the most widely used to conduct hydrographical surveys employing a singlebeam echosounder (SBES) and multibeam echosounder (MBES). In addition to depth information, seafloor sediment distribution maps are essenti...

Dredging is one of the seaport’s regular and necessary maintenance activities to keep the sea depth under control. The purpose of dredging is to provide safe navigation where the depth of the water column must be more profound than the ship’s draft. Periodic bathymetric surveys using an echosounder can observe changes in the topography of the seabe...

As one of the largest archipelagic countries in the world, Indonesia has an area of inland waters of 3.11 million km2 and a territorial sea area of 290,000 km2. Indonesia also has 17,504 islands, 34 provinces, and 514 cities/districts. For orderly administration, the government and parliament established Law No. 32/2004 amended by Law No. 23/2014 c...

Tidal data has a significant role in various fields in hydrographic surveys and navigation, port planning, and other coastal management. The number of fixed tide stations in Indonesia is minimal compared to the vast territorial waters in Indonesia. So that for areas that are not covered by tidal fixed stations, direct tidal observation with a certa...

Utilizing a multibeam echosounder considers several factors based on its specifications, such as selectable frequency and selectable swath angle. It is done for multibeam efficiency and being usable in any situation. This research will analyze the Angular Resolution and Range Resolution. The purpose is to determine the ability of Multibeam echosoun...

Coastal areas are vulnerable to change because, in this region, many human activities and natural influences change. These activities can result in changes in the existing coastline. Moreover, the city of Surabaya has a reasonably long coastline. This study calculated the speed of shoreline change using remote sensing technology of SPOT 6 and SPOT...

Port of Tanjung Perak has several terminals, one of which is Nilam Terminal. Nilam Terminal itself is a Multipurpose Terminal and one of the terminals with the highest loading and unloading activities at Port of Tanjung Perak. With the high level of activities occurring at the Nilam Terminal, monitoring and maintenance of the wharf wall conditions...

Innovations in GNSS technology have been increased rapidly with significant development in geodetic and navigation types due to its low-cost. One of the advantages of low-cost GNSS is in its price tags, which varies from the geodetic type. This study determines GNSS Tersus BX316 and Comnav K706 Oem Board’s equivalent abilities compared to Stonex S8...

Coastal areas have a significant role in human life worldwide, where world economic activities are concentrated in coastal areas. One of which is the activity of loading and unloading import-export goods through ports. Ports management must use a nautical chart to ensure the safety of shipping activities. The nautical chart contains graphical infor...

Indonesia is a country that has an important role in the oil and gas industry. Considering this important role, it is necessary to conduct an inspection and safety inspection to support the sustainability of the oil and gas industry in Indonesia.. In this study the method used is the processing of side scan sonar (SSS) and dual-head scanning profil...

Ocean tides play essential roles in the field of hydrography and navigation. The conventional method to measure tides is by observing the vertical variation of sea surface using a tide staff. However, this method has several disadvantages. It consumes more human resources and time to observe and record the take. Moreover, the recorded data tends to...

Gresik Port, East Java, is a port that has a very strategic location because there are several large industries such as the PT. Petrokimia Gresik, PT. Semen Gresik, PT. Maspion, PT. Wilmar, PT. Pelindo III, and other factories. This condition makes the need to obtain accurate necessary water information such as bathymetry. Bathymetry is an essentia...

Palu Bay is an earthquake-prone area, in September 2018 tectonic earthquake occurred in Donggala District, Central Sulawesi, which caused tsunami due to underwater landslides. One of the impacts caused by the tsunami was changes in bathymetry. In tsunami post-disaster reconstruction, further studies regarding seafloor topography information of affe...

Bathymetric mapping was used to map the sea floor. The accurate and recent sea floor data are needed by many human activities such as for water transportation routes and off-shore infrastructure constructions. General in-situ mapping using multi/single beam echo-sounder is time consuming, high cost and difficult access to a remote area. Bathymetric...

An Airborne LiDAR can be used to map the depth of the water. This system is called an Airborne LiDAR Bathymetry. In order to measure the water depth, an Airborne LiDAR is utilized with the green light sensor beside the near-infrared light sensor. However, water condition affects the capability of the green light penetration. The clarity of the wate...

The implementation of the sea toll program positively encourages the development of new marine infrastructure along the area it passes. One of the problems that arise in the development of new marine infrastructure is the unavailability of chart datum values. Therefore, there is a need for tidal observations to determine the value of the chart datu...

Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS (Global Navigation Satellite System) operated by Rusia and BeiDou/Compass operated by China. Ma...

Tide represents the vertical variation of sea surface. This parameter plays important rules in bathymetric survey. The conventional method to observe the sea surface variation is by using tide pole. Nowdays, a Global Navigation Satellite System (GNSS) can be used as a means to measure the variation of sea surface as it provides high accuracy coordi...

Recently, technological developments in the field of surveys and mapping are growing very rapidly such as total station, navigation satellite (Global Navigation Satellite System), drones and laser scanners. One application of this technology is to measure a stockpile area quickly and accurately. This research will measure two stockpiles (coal wareh...

In this research, we observed Coseismic Ionospheric Disturbances (CID) of West Sumatra March 2nd, 2016 earthquake with GNSS-TEC. This earthquake had strike slip focal mechanism with earthquake moment magnitude 7.8 Mw. In order to observe ionospheric fluctuations, some GNSS stations owned by Geospatial Information Agency (BIG) were used, these stati...

Surabaya’s geological condition that dominated by alluvium unconsolidated, as well as increasing growth of buildings-especially skyscrapers-are triggered the surface deformation on the area. This research aims to monitor and analyze the surface deformation, especially the subsidence that occurred in Surabaya urban area over the last two years. We u...

Regional autonomy is the right, the authority, and the obligation of autonomous region to set up and manage their own affairs and interests of the community in accordance with the potential and peculiarities of each area. To implement regional autonomy, the autonomous region must be clear where the location of its borders. Boundary area is divided...

Multibeam sonars use an acoustic wave to provide a view of seafloor topography and collect its backscatter. Seafloor backscatter image can be used as a means of quantitative classification of seafloor lithology. This allows sediment expert to examine spatial distributions of seafloor sediment types and discriminate among them. This method is expect...

The decrease of coastal-water quality in the Surabaya coastal region can be recognized from the conceentration of Total Suspended Sediment(TSS ) . As a result we need a system for monitoring sediment concentration in the coastal region of Surabaya which regularly measures TSS. The principle to model and monitor TSSconcentration using remote sensing...

Coastal areas often experience changes in function, region supposed to be conservation area or coastal protection forests, as water catchment areas and habitats of mangrove forests have been turned into region large-scale housing, residential, industrial, ware housing and so on. Coastal area of Surabaya, especially in the East Surabaya, the reclaim...

Recently, a lot of marine resource management in this area such as shipping lane, Suramadu Bridge, Tanjung Perak Port, Teluk Lamong Port and other ports in Gresik and Bangkalan. According to the Law No. 32/2004 about local government stated that cities/regencies have full authorities to manage the sea untill 1/3 provincial authorities up to 12 naut...

By the end of 2012, Indonesia consists of 34 provinces, 422 regencies, and 98 cities. According to the decentralization policy as stipulated by the Act No. 32/2004, infrastructure development becomes inevitable point. Sectors that highly increased are coastal and marine development. Abundant natural resources in the coastal area drives investor to...

Pelabuhan merupakan salah satu simpul dari mata rantai bagi kelancaran angkutan muatan laut dan darat. Pelabuhan harus aman dari badai, ombak, maupun arus. Sehingga kapal dapat berputar, melakukan bongkar muat, dan melakukan perpindahan penumpang dengan aman, khususnya di Pelabuhan Tanjungpriok, Jakarta. Jika sedimen di kolam Pelabuhan Tanjungpriok...

Kabupaten Jember memiliki potensi pariwisata yang cukup banyak, seperti wisata pegunungan ataupun wisata pantainya. Hal ini mengakibatkan banyaknya objek-objek wisata yang sangat menarik untuk dikunjungi. Salah satu wisata yang akan dikembangkan dalam kepariwisataannya saat ini oleh pemerintah daerah yaitu Desa Kemuninglor. Desa ini terletak di dae...

Indonesia adalah negara maritim dimana memiliki wilayah laut sekitar 70% sehingga segala aktifitas sangat dipengaruhi oleh kondisi laut. Sea surface high (SSH) merupakan tinggi permukaan air laut di atas ellipsoid. Pengkajian tentang sea surface high (SSH) sangat penting dilakukan di Indonesia untuk memperoleh informasi spasial tentang kondisi pera...

Penentuan posisi dalam pemetaan menggunakan penginderaan jauh dan foto udara memerlukan pengamatan GPS geodetik sebagai titik kontrol yang memilki ketelitian tinggi. Sistem koreksi data penentuan posisinya diperoleh dari transmisi data dari stasiun base ke receiver. Dalam perkembangan sekarang ini metode pengukuran RTK telah menggunakan metode NTRI...

Batas kewenangan daerah di laut, memiliki arti penting bagi kabupaten/kota dan pemerintah propinsi terkait dengan penyelenggaraan otonomi daerah. Batas daerah yang tidak jelas dapat memicu konflik di wilayah perbatasan dan menghambat penyelenggaraan fungsi pemerintahan daerah. Bila tidak segera diselesaikan maka berpotensi menurunkan tingkat pelaya...

Peta adalah gambaran permukaan bumi pada bidang datar dengan skala dan sistem proyeksi tertentu. Peta bisa disajikan dalam berbagai cara yang berbeda, mulai dari peta konvensional yang tercetak hingga peta digital yang tampil di layar komputer.Kegiatan pemetaan merupakan solusi yang nyata untuk menyediakan informasi spasial yang akurat dan terperca...

Kenaikan muka air laut (Sea Level Rise) disebabkan oleh semakin meningkatnya suhu global bumi atau yang biasa disebut dengan pemanasan global. Fenomena ini harus diwaspadai, mengingat luas perairan di Indonesia mendominasi sebesar 75,32 % serta banyak terdapat pemukiman maupun pusat perekonomian yang terletak dekat dengan perairan. Dengan luas pera...

Water vapor plays a critical role for global/regional scale of weather and climate changes. Observation of water vapor in the atmosphere are still a through job that has been difficult for researchers atmosphere. It causes the movement of the water vapor content of both temporal and spatial quickly in the atmosphere. The utilization of the estimate...

Pengamatan kandungan uap air yang teliti di atmosfer masih menjadi pekerjaan yang belum terselesaikan oleh para peneliti atmosfer. Dikarenakan pergerakan kandungan uap air yang cepat baik temporal maupun spasialnya di atmosfer, pengamatan kandungan uap air yang akurat sangat sulit dilakukan. Global Positioning System atau yang lebih dikenal dengan...

Teknologi satelit altimetri dapat digunakan untuk pengamatan pasang surut air laut pada wilayah yang lebih luas sesuai dengan lintasan (pass) satelit altimetri. Selama ini satelit altimetri digunakan untuk pengamatan dinamika permukaan air laut global pada daerah lautan bebas. Satelit altimetri memiliki tingkat akurasi yang bagus di wilayah peraira...

Analisis maupun peramalan pasut pada daerah survei dapat dipakai untuk berbagai keperluan rekayasa, antara lain perencanaan alur pelabuhan, navigasi, pengembangan wilayah pantai, penentuan batas wilayah dan sebagainya. Terdapat beberapa metode yang dapat digunakan untuk menentukan konstanta harmonik pasang surut selama periode tertentu diantaranya...

This paper described the results using data from ALOS satellite for the purpose of detecting surface displacement in hilly areas of Semarang City using the two-pass differential interferometry synthetic aperture radar (DInSAR) technique. The data analyzed in this study is four ALOS PALSAR pairs from 2007-2008. 90-m SRTM DEM was used as an external...

Pembuangan lumpur dan material terlarut dalam jumlah besar dan secara terus-menerus ke Kali Porong mengakibatkan terjadinya sedimentasi di Kali Porong dan sedimentasi juga timbul di muara Kali Porong dan Pantai Surabaya – Sidoarjo yang diakibatkan oleh transport sedimen dari Kali Porong ke muara dan ke sepanjang pantai. Oleh karena itu, perlu adany...