Range of sea surface temperature and chlorophyll-α values based on mackerel catches in the northern waters of West Java, Indonesia (original) (raw)
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Study of Short Mackerel Cath, Sea Surface Temperature, and Chlorophyll -A in the Makassar Strait
International Journal of Remote Sensing and Earth Sciences, 2010
The Makassar Strait is the major fishing ground for Short Mackerel (Rastrelliger spp.) fisheries in South Sulawesi, Indonesia using both commercial fishing vessels and boats with traditional fishing gear. Though Short Mackerel is one of dominant commercial food fishes in South Sulawesi, the annual Catch per Unit Effort (CPUE) has been decreasing from year to year. In 2000, the total of annual CPUE was 22,117 tons and in 2007, it was 17,596 tons. The purpose of this research was to forecast the fishing ground of Short Mackerel employing Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images in Makassar Strait territory with the study interest of 3°S to 5°S and 118°E to 120°E. This research was conducted from September 15 to October 20, 2007. Fishing data were collected from the fishermen including fishing locations, catch, sea surface temperature, and chlorophyll concentrations. To determine the relationship between catch and oceanographic parameters, linear regression was employed. We also examined sea surface temperature (SST) and Chlorophyll-a concentration field data vs. MODIS satellite data. The result showed that SST and Chlorophyll distributions have close relationship with the distribution of fishing location of Short Mackerel. The fishing location tends to spread on the waters with the SST ranged from 26°C to 29°C and Chlorophyll concentration from 1.19mg/m 3 to 1.25mg/m 3 .
E3S Web of Conferences
Arafura Sea is one of the waters in the eastern region of Indonesia that is rich in marine and fisheries potentials because of its fertile conditions which is suitable for fishing ground. One of the fish resources which have important economic value at the Arafura Sea is big pelagic fish such as Mackerel. Thus this study aims to determine the spatial and temporal distribution of Mackerel in the Arafura Sea based on fishing boat coordinate data, to know the distribution of chlorophyll-a concentration and SST from MODIS satellite data in the Arafura Sea and to determine the correlation of chlorophyll-a and SST to the Mackerel catch distribution. This study was conducted in December 2016 until February 2017 in the Arafura Sea, image data analysis of MODIS level-3 conducted at the Laboratory of Oceanography FPIK UNDIP. The data used are Mackerel catch data, the Chlorophyll-a data and SST from MODIS satellite from June to August 2015. The results of this study showed that the distributio...
Proceeding of 12th Biennial Conference of Pan Ocean Remote Sensing Conference (PORSEC 2014) , 2014
Southeast Indian Ocean, particularly in the Southern waters off Java-Bali was identified as potential fishing ground of bigeye tuna (Thunnus obesus). We used satellite remote sensing data of Sea Surface Temperature (SST) and Sea Surface Chlorophyll (SSC) and daily fish catch data from PT Perikanan Nusantara, Bali during 2006-2010. To understand the preferred habitat of bigeye tuna in the current study area, the relationship between SST, SSC and the number of bigeye tuna are important to investigate. To understand the relationship between SST, SSC and bigeye tuna, fisheries data classification and polynomial regression were used. This study considers to evaluate which parameter will influence the abundance of bigeye tuna, and to determine the range value of each parameter that is optimum for bigeye tuna. The results clearly show that both of SST and SSC, which derived from satellite observation confirmed a strong relationship with the abundance of bigeye tuna. Statistical analysis showed the optimum of SST for bigeye tuna is less than 29.1°C and more than 27.4°C. In addition, the optimum value of SSC was 0.055 to 0.175 mg m-3. Moreover, meteorological data and ocean dynamic analysis seems to be other parameters that affect the abundance of bigeye tuna. Keywords: Bigeye tuna, SST, SSC, remote sensing, Southern waters off Java-Bali, Indian Ocean
Advances in social science, education and humanities research, 2023
The decline in fish catches in 2018-2020 becomes a problem experienced by fishermen in the southern waters of Java island. This affects fishermen whose livelihoods are from marine products. From these problems, the purpose of the research is to analyze the fishermen's catches in the southern waters of Java island in 2018 and 2020 based on chlorophyll-a fertility and sea surface temperature (SST), and supported by upwelling phenomena and determination of Potential Fishing Zones. The method used is secondary data analysis taken from MODIS Level 3 imagery to visualize water conditions. The concentration of chlorophyll-a in the eastern season of 2018 had an average of 0.4-0.6 mg/m 3 with a sea surface temperature of 25.9-27.8°C. In 2020, there was a decrease by an average of 0.3-0.4 mg/m 3 with a sea surface temperature of 26.7-28.3°C. This is proved by all significance values of paired t-test less than 0.005. That is, there is a significant difference between both periods. In 2018, the widest strong upwelling was in July with an area of 13,0723.94 km 2. In 2020, it occurred in June with an area of 41,515.86 km 2. The most potential fishing zones of 2018 were in August as many as 254 points and in 2020 in July 154 points. High chlorophyll-a with low sea surface temperature levels, strong upwelling areas, and dominant potential fishing zones are mostly found in areas proximate to the coast compared to those further away from the coast.
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The West Sumatera Waters has the potential to be developed for capture fisheries. This potential is utilized through the application of local knowledge for better fishing operations. Fishermen in West Sumatera in determining fishing ground still use the traditional method, namely using previous experience even though on vessels of > 40 GT and it has been assisted by the fish finder. This study aims to analyze the distribution of sea surface temperature (SST) and chlorophyll-a through Aqua Modis satellite imagery interpretation and analyze its effect on boat lift catch from December 2019 to March 2020. The remote sensing technique via satellite is an efficient method to determine the distribution of sea surface temperature and the distribution of chlorophyll-a. Data from satellites is very helpful in determining temperature and chlorophyll-a. The results obtained are in December 2019 to March 2020 SST distribution ranged from 27 to 30.9°C with dominant SST fluctuating every mont...
Indian mackerel has been supporting commercial fisheries In South Sulawesi. The knowledge about oceanographic parameter is very support fishermen activity for detection of the Indian mackerel position in the sea. The objective of the study was to analysis some oceanograpphyc factors relate to fishing zone potency of indian mackerel in Flores Sea South Sulawesi. The characteristic of fishing ground was identified during fishing operation of purse seine. The position of fishing operation was identified by using GPS. Abundance of indian mackerel was counted from Catch Per uni Effort of purse seine. Sea Surface Temperature was detected by using satellite of TRMM (Tropical Rainfall Measuring Mission). The concentration chlorophyll-a was estimated by using the satellite of The Orbview-2 SeaWiFS. CPUE in the September and October is highest This is related to the highest chlorophyll-a 8 mg m -3 and was also supported by the SST 26,6 o C. From July to October there was upwelling process in southern part of Sulawesi that generate increasing chlorophyll-a. Then the CPUE of Indian mackerel also increase, Data SST and Chlorophyll-a from satellite could be used as indicator for detecting of the distribution and abundance of Indian mackerel.
E3S Web of Conferences, 2021
The fishing ground is identical and closely related to chlorophyll-a abundance in the waters, associated with its fisheries potential. This research has been conducted to determine the concentration and distribution of chlorophyll-a in the seas, especially in the Fisheries Management Area (FMA) 712 encompassing the Java Sea. The analysis used monthly time-series data collected from the satellite imagery over the last 11 years, taken through the ERDDAP website. The mean concentration of chlorophyll-a in the study area was 1.13 mg/l in June 2013. Based on 11 years of data processing, it can be concluded that the highest concentration of chlorophyll-a occurred in the west monsoon season from November to April, where increased rainfall caused the nutrient wash from terrestrial to the open waters. The lowest chlorophyll-a concentration happened in the east monsoon season from April to November, where the dry season arrived. The existence of pelagic fishes in FMA 712, such as Sardinella L...
The investigation is aimed to know the relationship between chlorophyll-a (chl-a) concentration and the abundance of Oily sardine (Sardinella lemuru), in Bali Strait. A time series of monthly mean chl-a data derived from Ocean Color Thermal Scanner (OCTS) sensor and Sea-viewing Wide Field-of View Sensor (SeaWiFS) during 1997-1999 are used in this study. Monthly Sardinella lemuru catch during 1997-1999 are obtained from fish landing data. The abundance of Sardinella lemuru is determined from acoustic data conducted in Bali Strait in September 1998 and May 1999. The result shows that the fluctuation of chlorophyll-a concentration in Bali Strait is influenced by monsoon and global climate change phenomena such as Dipole Mode (DM) event. During southeast Monsoon the upwelling process occurred around Bali Strait, so that the chl-a concentration is increased and during DM event occurred positive anomaly of chl-a concentration. The catch of Sardinella lemuru in Bali Strait is fluctuated during 1997-1999. The correlation between chl-a concentration and lemuru catch is positive and significant with certain time lag.
The objective of this study is to examine the variability of sea surface chlorophyll (SSC) and sea surface temperatures (SST) to support marine aquaculture development within the Indonesian region. The study have been conducted by using remote sensing data of NOAA-AVHRR, SeaWiFs and Aqua MODIS for 10 year period (2007-2016). The result shows that monthly variation of SST and SSC climatologies are found to be affected by monsoonal climate system in this region. In deep water areas, the variability of SSC is very small in all year. Meanwhile, the highest SSC concentrations are observed in the Malacca Strait, around the coast of Kalimantan, Arafuru Seas and the eastern Banda Sea from January to December. Added, relatively large chlorophyll concentrations are encountered in the area of coastal regions.
E3S Web of Conferences, 2022
Utilization of potential fishery and marine resources is still not maximally used by fishermen. Sea surface temperatures and the spread of chlorophyll-a through remote sensing systems can be used as potential fishing zones. This study aims to determine potential fishing zones using geographic information systems through the distribution of sea surface temperatures and the value of chlorophyll-a concentrations in Aceh Besar waters which is expected to improve the sustainability of fishing efforts. This research was conducted in January-December 2019 using geographic information system by extracting from Aqua-MODIS satellite image with resolution of 4 km and sea surface temperature overlay method with chlorophyll-a concentration. The results found the highest sea surface temperature value was in April at 31.62°C and the lowest temperature was in December at 28.45°C. The highest average chlorophyll-a concentration in Aceh Besar waters was 1.53 mg/m3 in December and the lowest concentra...