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INDONESIA
Jurnal Segara
Published by Kementerian Kelautan dan Perikanan RI
ISSN : 19070659     EISSN : 24611166     DOI : -
Core Subject : Science, Social,
Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology
Jurnal SEGARA (p-ISSN: 1907-0659, e-ISSN: 2461-1166) adalah Jurnal yang diasuh oleh Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan (BRSDMKP), Kementerian Kelautan dan Perikanan – KKP, dengan nomenklatur baru Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan, KKP dengan tujuan menyebarluaskan informasi tentang perkembangan ilmiah bidang kelautan di Indonesia, seperti: oseanografi, akustik dan instrumentasi, inderaja,kewilayahan sumberdaya nonhayati, energi, arkeologi bawah air dan lingkungan.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 18, No 2 (2022): August" : 5 Documents clear
Modeling the Possible Impacts of Dredging Activities in the Fishery Port of Carocok, Pesisir Selatan Regency, West Sumatra: Hydro-Geo-Oceanographical Approaches Wisnu Arya Gemilang; Ulung Jantama Wisha; Guntur Adhi Rahmawan; Nia Naenul Hasanah Ridwan; Ilham Ilham
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11426

Abstract

Carocok Fishery Port (PPP Carocok) is a supporting facility for capturing fishery in the Pesisir Selatan Regency. Thus, bathymetry monitoring the shipping lane and the port pool dredging is crucial to bolster fishery activities. This study aims to model the possible impact when massive dredging is applied based on geological and oceanographical approaches. The bottom sediment sampled in the field was analyzed using a granulometric method. A direct bathymetry survey was also done using a single beam echosounder and tide gauge deployment. Hydrodynamic modeling was employed to predict the changes in water motion characteristics if dredging is applied—a scenario applying bathymetry profile after dredging was applied in the simulation. The bathymetry contour within Carocok Bay was relatively declivous, categorized as shallow water with a depth ranging from -2.5 to -15 m. The sediment type in the study area consisted of sand, sandy clay, clayey sand, silty sand, and mixed textures. The tidal current motions (ranging from 0 to 0.053 m/s) are the primary factor transporting the water mass within the port pool, which also impacts sediment transport in the semi-enclosed water area. The sediment characteristics showed that the sediment is deposited in low-energy conditions. It is modeled that the dredging plan in the PPP Carocok will not cause any significant changes, including bathymetry alteration and water environment. Therefore, the port pool is still appropriate to espouse fishery activities in the Carocok Port without dredging.
Strengthening The Social Capital of The Banda Neira Community to Improve The Adaptive Capacity of Tsunami Mitigation Triyono Triyono; Muhammad Hikmat Jayawiguna; Dyan Primana Sobarudin; Ana Rojayati
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11601

Abstract

Adaptive capacity is one of the essential components of tsunami disaster mitigation. One of the determinants of the high level of adaptive capacity is the strength of the community’s social capital. Social capital plays an essential role as the basis for community response, especially during the emergency period. Communities with good social capital positively affect the implementation of tsunami mitigation strategies. This study seeks to assess the actual condition of the adaptive capacity of the Banda Neira community in dealing with the tsunami disaster and efforts to increase it through strengthening social capital. The adaptive capacity assessment uses an index-based approach by identifying a set of determinants based on respondent interviews related to perceptions and knowledge of disaster mitigation. The three variables of social capital (bonding, bridging, and linking) are used to measure each determinant numerically or qualitatively with the value of the Likert model scale (1-5). Furthermore, the determinant scores are combined into a measurement of the overall adaptive capacity of the system. The results of the research indicate that it is necessary to strengthen the bounding and bridging variables, namely in the form of increasing the role and function of institutions in assisting, preparedness training, and strengthening relations between communities through social activities and optimizing the role of social groups.
The Effect of Training and Competency on Shipping Safety Performance (Study at Tanjung Emas Port Semarang) Ignatius Martanto; Rauly Sijabat
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11496

Abstract

Shipping safety performance cannot be separated from the quality of sea transportation. The performance of sea transportation safety is a very important factor because it is related to the efforts of the Directorate General of Sea Transportation in realizing effective and efficient sea transportation. Human resources are one of the factors that cause shipping safety performance is not optimal. The results of this study indicate that the problems that occur in shipping safety performance are caused by the competency factor of the workers on board that are not yet optimal. In connection with this phenomenon, this study intends to empirically examine the effect of training and competence on shipping safety performance. Related to this objective, data on training, competence and performance of shipping safety was collected through interviews using questionnaires to workers on board ships at Tanjung Emas Port, Semarang. The data obtained were then analyzed using the Structural Equation Modeling approach to test the research model and the influence between variables. The results of this study indicate that the performance of shipping safety is caused by the competence factor of the above workers when it is not optimal. In addition to competence, this study also shows that problematic shipping safety performance is caused by low training factors. This study also shows that the provision of training can shape and build the competencies needed to support shipping safety performance.
The Effect of Enso and IOD Climate Variability on Salt Production In Nusa Tenggara Islands Rikha Bramawanto; Fajar Yudi Prabawa; Ifan Ridlo Suhelmi
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11421

Abstract

The Nusa Tenggara Islands have an ideal environment for salt production, such as low rainfall and humidity, high evaporation and wind speed, and relatively good seawater quality. However, global climate variability, such as ENSO and IOD, affects the salt harvest volume of the region. This paper aims to discuss the effect of ENSO and IOD climate variability on salt production in the Nusa Tenggara Islands and their comparison with salt production on the islands of Java and Madura. The result shows that salt production in Nusa Tenggara Islands increased when El Nino and positive DMI simultaneously occurred, as in 2012, 2014, and 2015. Conversely, salt production decreased when La Nina and negative DMI simultaneously occurred, as in 2016. When ENSO and DMI are in normal or opposite conditions, salt production is moderate, as in 2013 and 2017. The La Niña event and IOD negative in 2016 triggered high rainfall and salt production decrease in Nusa Tenggara, about 5.8% of the annual average salt production. Meanwhile, this condition also affected salt crop failure on the islands of Java and Madura. Thus, the effect of ENSO and IOD climate variability on salt production in Nusa Tenggara is less significant than in Java and Madura.
Salinity Sensor Development for Pond Water Utilizing Ultrasonic Wave Dananjaya Endi Pratama; Agus Indra Gunawan; Rusminto Tjatur Widodo; Akhmad Hendriawan
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.10932

Abstract

Shrimp farming is one of the most popular aquaculture activities in Indonesia. This activity is carried out in a pond. Therefore, there are many ponds as a place for shrimp farming in Indonesia. Several factors affect the results of shrimp farming in ponds. One of the factors is water quality. Four parameters that are commonly used to indicate water quality i.e. dissolve oxygen, salinity, PH, and temperature. In this study, we discussed salinity measurement. Most salinity sensors use the probe principle in measurement. When the sensors are used to measure the water that contains mineral salts, the probe will be susceptible to rust and cause measurement errors. Based on these conditions, we conducted a study of salinity measurements by using the acoustic technique. The measurement was carried out by using an ultrasonic wave. The water salinity was determined based on the acoustic intensity and acoustic speed. In this research, we developed a conversion curve based on the measurement of acoustic intensity from NaCl, KCl, and MgCl2 saline solutions with certain concentrations. The conversion curve is used to measure salinity in pond water. We also calculated salinity based on the measurement result of acoustic speed. From the experiment, the NaCl conversion curve became the most suitable for salinity measurement. The measurement result of salinity in pond water from the NaCl saline solution conversion curve was very close to the results of Del Grosso formula, Chen Millero formula, and refractometer.

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