Comparison of Chlorophyll-a Measurement Using Multi Spatial Imagery and Numerical Model in Bali Strait

Hanintyo, Rizki; Susilo, Eko

doi:10.1088/1755-1315/47/1/012010

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…The processing of Sentinel 2A imagery are done using ArcGIS 10.5 software for radiometric correction, calibration, cropping and implementation of algorithm. Radiometric correction is done reducing or correct errors in the Digital Numbers (DN) of images [6,10]. The process of cropping is done to minimize the image of the study area.…”

Section: Methodsmentioning

confidence: 99%

Estimating Chlorophyll-A Concentration using Remote Sensing Techniques

Kaymaz¹

2018

ARR

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Chlorophyll-a is used as an indicator of the mass of phytoplankton, and as a reference for estimating organic influence in the aquatic area. This study discusses the spatio-temporal distribution of chlorophyll-a in the Marmaris Bay. The aim of the study is to be a source of information on how to use remote sensing technology in the marine field. Chl-a level is identified using Sentinel 2A satellite images in the May 2017 and May 2018. The chl-a levels were higher in the coastal areas than the open sea. The results obtained from the satellite images should be compared with the laboratory results and the accuracy should be confirmed.

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Section: Methodsmentioning

confidence: 99%

Estimating Chlorophyll-A Concentration using Remote Sensing Techniques

Kaymaz¹

2018

ARR

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“…Therefore, it has become one of the most promising data sources of remote sensing technology for water monitoring [11] and has been successfully used in studies related to the aquatic environment [12,13]. Landsat-8 satellites were considered quite effective in monitoring Chl-a distribution for coastal areas [14]. Several recent studies have also shown the capabilities of Landsat-8 imaging for applications involving ocean color remote sensing, with its spatial resolution of 30 m, providing new insights to better understand the ecological processes occurring in coastal waters [12,15].…”

Section: Introductionmentioning

confidence: 99%

Estimating the Chlorophyll-a in the Nha Trang Bay using Landsat-8 OLI data

Hieu,

Tri,

Huan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The pigment chlorophyll-a (Chl-a) is used to evaluate aquatic ecological health. Using remote sensing techniques to estimate this pigment and spatially mapping its distribution becomes essential for measuring and assessing water quality in coastal areas. Nha Trang Bay is famous not only for its scenery but also for its biodiversity values, especially the existence of coral reefs. In this study, Landsat-8 OLI was taken on June 3, 2015, and field measurements of Chl-a at 13 survey sites from June 6-8, 2015, were used to build a local algorithm to monitor the spatio-temporal distribution of Chl-a content in Nha Trang Bay. The ACOLITE processor was employed for the atmospheric modification of Landsat-8 OLI images to obtain atmospherically corrected surface reflectance products. Four types of simple regression models, including linear, exponential, logarithmic, and power models, were used to describe the relationship between the in-situ measurement of Chl-a and remote sensing reflectance of Landsat-8 OLI data. The results of correlation analysis have shown a statistically significant relationship between field measurement of Chl-a concentration and the remote sensing reflectance ratio of Landsat-8 band 3 versus band 2 using an exponential model with a coefficient of determination of 0.88 (p < 0.001) and root mean square error (RMSE) of 0.40 mg/m3. This empirical relationship was applied to map the spatial distribution of Chl-a concentration from 27 cloudless Landsat-8 OLI images from 2013 to 2021. The spatio-temporal distribution of Chl-a indicated that the Chl-a concentration in the Bay has a low value (less than 1 mg/m3). However, this concentration becomes high in the coastal areas (greater than 1 mg/m3) and the Cai and Tac rivers (greater than 2 mg/m3). It is also noted that the content of Chl-a in the rainy season is fairly higher than in the dry season, by an average of 0.68 mg/m3 and 0.53 mg/m3, respectively. This research highlights that Landsat-8 OLI data can be an effective and valuable tool in monitoring Chl-a for coastal areas.

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“…One of the remote sensing satellites equipped with sensors that can detect the content of chlorophyll-a in waters is the Landsat satellite. Landsat satellite imagery has been widely used to estimate the content of chlorophyll-a concentrations in waters (Hanintyo and Susilo 2016). In cultivating seaweed, obstacles often arise in the form of failures experienced by seaweed farmers or poor quality yields.…”

Section: Introductionmentioning

confidence: 99%

Calendar for Planting Seaweed Eucheuma Sp. In Mallasoro Bay, Jeneponto District, Based on Landsat-8 Images

Amran,

Niartiningsih,

Faizal

et al. 2023

JIKS

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Seaweed cultivation activities in Jeneponto Regency have been practised for a long time and have become the main livelihood for most of the Mallasoro Bay community. In cultivating seaweed, obstacles often arise in the form of failures experienced by seaweed farmers or poor-quality yields. This study was aimed to develop alternative planting calendars for Eucheuma sp. in Mallasoro Bay, Jeneponto Regency based on sea surface temperature and distribution of chlorophyll-a obtained from Landsat-8 imagery. Image Processing Sea Surface Temperature and Chlorophyll-a were processed using ENVI 4.8 AND 5.3 software, the satellite images used were clean and without cloud disturbance. In this study, data analysis was carried out descriptively. The water temperature that is good for seaweed growth is 27-30˚C, for Mallasoro Bay Sea Surface Temperature which is suitable for seaweed cultivation, namely April, May, June, July, August, September, October and November. While the classification is based on the criteria for chlorophyll-a trophic status in marine waters, namely the range < 1 mg/L is classified as Oligotrophic, ≥ 1–3 mg/L is classified as Mesotrophic, ≥ 3–5 mg/L is classified as Eutrophic, and > 5 mg/L is classified as Hypertrophic. , from the results of image analysis for the distribution of chlorophyll-a in Mallasoro Bay, it shows that Mallasoro Bay is at the Mesotrophic level throughout the year or the fertility level of the waters is quite fertile because it is in the range of ≥ 1–3 mg/L. so that a seaweed planting calendar can be obtained in Mallasoro Bay, namely in January, February and December, preparation of tools such as cleaning and repair of seaweed planting tools can be carried out, then at the end of March, the end of May, the end of July and the end of September, the procurement of seaweed seeds is carried out. , in early April, early June, early August, and early October, seaweed seeds can be spread, then in mid-May, mid-July, mid-September, and mid-November, harvesting can be carried out, so that seaweed cultivation can be carried out 4 times in one year. cycle.

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Comparison of Chlorophyll-a Measurement Using Multi Spatial Imagery and Numerical Model in Bali Strait

Cited by 4 publications

References 11 publications

Estimating Chlorophyll-A Concentration using Remote Sensing Techniques

Estimating Chlorophyll-A Concentration using Remote Sensing Techniques

Estimating the Chlorophyll-a in the Nha Trang Bay using Landsat-8 OLI data

Calendar for Planting Seaweed Eucheuma Sp. In Mallasoro Bay, Jeneponto District, Based on Landsat-8 Images

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