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Wyświetlanie 1-7 z 7
Tytuł:
Overview of Oceanic Eddies in Indonesia Seas Based on the Sea Surface Temperature and Sea Surface Height
Autorzy:
Purba, Noir P.
Faizal, Ibnu
Damanik, Finri S.
Rachim, Fadliyan R.
Mulyani, Putri G.
Powiązania:
https://bibliotekanauki.pl/articles/1031834.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Eddies
Indonesia Throughflow
Ocean Fronts
Water Mass
Opis:
One of the complexities of the ocean currents in the territorial waters of Indonesia is oceanic eddies form. Ocean eddy is one of the very crucial phenomena in the ocean due to its circulation and connection with the chemical and biological aspects in the water column. This study aimed to observe the distribution of oceanic eddies associated with the Sea Surface Temperature (SST) and Sea Surface Height (SSH) with the Automatic Eddy Detection (AED) method. The analysis included distribution and types correlated with seasons. The results showed that eddies occur in all regions in the Indonesian Seas except the Java Sea. In general, the occurrence of eddies every month does not differ significantly for both Ocean Cyclonic Eddies (OCE) and Ocean Anticyclonic Eddies (OAE). The total oceanic eddies in a year are around 1,149 events. A minimum radius of the ocean eddies found was about 5.08 km, and a maximum was around 386.76 km. Furthermore, the occurrence of OCE is mostly in locations that are almost the same as OAE. Both types of eddy are mostly in locations with the boundary of temperatures and the boundary of SSH. Several eddies exist every month and mostly change or move into other areas. Eddies in Indonesia seas are influenced by differences of SST and different SSH that form ocean currents. One of the complexities of the ocean currents in the territorial waters of Indonesia is oceanic eddies form. Ocean eddy is one of the very crucial phenomena in the ocean due to its circulation and connection with the chemical and biological aspects in the water column. This study aimed to observe the distribution of oceanic eddies associated with the Sea Surface Temperature (SST) and Sea Surface Height (SSH) with the Automatic Eddy Detection (AED) method. The analysis included distribution and types correlated with seasons. The results showed that eddies occur in all regions in the Indonesian Seas except the Java Sea. In general, the occurrence of eddies every month does not differ significantly for both Ocean Cyclonic Eddies (OCE) and Ocean Anticyclonic Eddies (OAE). The total oceanic eddies in a year are around 1,149 events. A minimum radius of the ocean eddies found was about 5.08 km, and a maximum was around 386.76 km. Furthermore, the occurrence of OCE is mostly in locations that are almost the same as OAE. Both types of eddy are mostly in locations with the boundary of temperatures and the boundary of SSH. Several eddies exist every month and mostly change or move into other areas. Eddies in Indonesia seas are influenced by differences of SST and different SSH that form ocean currents.
Źródło:
World Scientific News; 2020, 147; 166-178
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial and temporal patterns of ocean variability using empirical orthogonal functions (EOF) in the Southern Java Waters
Autorzy:
Syamsuddin, Mega
Powiązania:
https://bibliotekanauki.pl/articles/1031454.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
El Niño Southern Oscillation
Empirical Orthogonal Function
Ocean variability
Opis:
The oceanographic parameters of Sea Surface Temperature (SST) from NOAA/AVHRR, Chlorophyll-a (Chl-a) from SeaWiFS and Modis/Aqua, Sea Surface Height Anomaly (SSHA) and eddy kinetic energy (EKE) from from TOPEX and Poseidon ERS-1/2 are used to understand the oceanographic variability in the Southern Java Waters. Analyses were done using empirical orthogonal function (EOF) and wavelet spectrum analysis in order to know spatial and temporal distributions related to the main forcing of the ocean climate variability for the period of January 1997 to December 2008 (12 years). The first EOF modes of Chl-a, SSHA and SST accounted for 42.8%, 36.5%, and 27.4% of total variance, corresponded with interannual signal for all the first modes, respectively. The spatial patterns of the first and second EOF modes of SSHA, SST and Chl-a gave a very typical cold water of SSHA, low SST and high Chl-a concentration located along the southern coast of Indonesian archipelago and warm water of SSHA, high SST and much less Chl-a concentration in the offshore region to make frontal areas along the latitudinal line around 10–12ºS. The results showed that total variance of the first two mode of SSHA, SST, and Chl-a explain 59.94%, 35.52%, and 55.26 %, respectively. These infer that SSHA and Chl-a give more response to the climate variability of El Niño Southern Oscillation (ENSO) forcing in the study area.
Źródło:
World Scientific News; 2020, 142; 76-87
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The estimation of bigeye tuna (Thunnus obesus, (Lowe, 1839)) fishing season in the East Indies Ocean which is disembarked in Benoa Port, Bali
Autorzy:
Dipanoto, Arsa
Syamsuddin, Mega L.
Anna, Zuzy
Izza, Izza
Powiązania:
https://bibliotekanauki.pl/articles/1076401.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bigeye Tuna
Fishing Season
Indian Ocean
SST
Thunnus obesus
Opis:
Prediction about fishing season is needed for fishing operation, so it can help fisherman to catch a big number of fish with effective and efficient. This study was started on May – June 2018. This study aimed to analize fishing season pattern of big eye tuna in Indian Ocean. Historical data about fish production and fishing effort of long line vessel for 5 years (2013-2017) collected from Indonesia Tuna Longline Asociation (ATLI) in Benoa Port, was used to calculate monthly CPUEs which were then analyzed using average percentage methods to obtain fishing season index for each month and sea surface temperature (SST) data collected from satellite. The result shows that big eye tuna can be caught along the year, but there was a pattern that fishing season occurs from June – September, December, and April with the peak season in east season. Optimum distribution of sea surface temperature base on big eye tuna’s fishing ground ranged from 27-27.5 °C.
Źródło:
World Scientific News; 2019, 115; 1-14
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocean Currents, Temperature, and Salinity at Raja Ampat Islands and The Boundaries Seas
Autorzy:
Nugraha, Angga P.
Purba, Noir P.
Junianto, Junianto
Sunarto, Sunarto
Powiązania:
https://bibliotekanauki.pl/articles/1163118.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Indonesian Seas
Monsoon
Pacific Ocean
Physical Condition
T-S Diagram
Opis:
Raja Ampat Islands and eastern seas influenced by water masses from the Pacific Ocean and the monsoon. The aim of the research is to study the physical condition of water column, movement, and identification of water sources. The method used in this study with spatial and temporal analysis. The results show that water movement through Raja Ampat, Halmahera, Ceram, and Banda Seas. Mix layer condition up to 71 m depth and thermocline layer up to 567 m depth. The identified water masses from T-S Diagram are SPIW (South Pacific Intermediate Water), SPSW (South Pacific Subtropical Water), NPSW (North Pacific Subtropical Water), and AAIW (Antartic Intermediate Water). The maximum SST value occurred at the end of west monsoon (February) in the range 28.25 °C - 30.5 °C, and the minimum value occurred at the end of east monsoon (August) in the range 26.25 °C - 29.25 °C. The maximum SSS value occurred at early monsoon transition 2 (September) in the range 34.25 psu - 34.75 psu, and the minimum value occurred at early monsoon transition 1 (March) in the range 32.75 psu - 34 psu.
Źródło:
World Scientific News; 2018, 110; 197-209
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Predictions for Rising Water Levels in the Oceans
Autorzy:
Zurbenko, Igor G.
Potrzeba-Macrina, Amy L.
Powiązania:
https://bibliotekanauki.pl/articles/1031426.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Global temperature
Kolmogorov-Zurbenko filters
linear / non-linear extrapolations
ocean water levels
Opis:
Global warming is an important and popular subject across global communities and in a wide array of literature. Global weather patterns are becoming more violent with an increase in the number of catastrophic events. The fundamental concepts of climate are strongly related to the natural freezers on planet Earth. Global warming affects Earth’s natural ice freezers. The warming climate in the Arctic and Antarctic regions are causing an increase in the melting of glaciers, which in turn generates a rise in ocean levels. The rising water levels are causing major regional problems in coastal areas and more importantly they are further accelerating global warming and extreme weather effects. This paper examines the long-term warming of the Arctic and Antarctic regions and the long-term rising water levels in the oceans, in addition to making predictions of these trends for the upcoming decades.
Źródło:
World Scientific News; 2021, 152; 1-14
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coastal Eutrophication as a Cause of Elimination of Lugworms: First Record of Arenicola marina (Linnaeus, 1758) from Coastal Areas of Bay of Bengal at Chandipur, Odisha, India
Autorzy:
Chakrabarti, Santanu
Ray, Rupendu
Powiązania:
https://bibliotekanauki.pl/articles/1193614.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Arabian Sea
Arenicola
Arenicola marina
Bay of Bengal
Chandipur
India
Indian Ocean
Lugworm
Opis:
Arenicola marina (Linnaeus, 1758), a marine polychaete worm of the phylum Annelida is rarely seen but its coiled castings are a familiar sight on a beach at low tide of both northern and southern hemisphere. The genus Arenicola enjoys a wide distribution and in the tropical and sub-tropical regions A. cristata is the dominant species. Apart from a few records on the beaches of Indian Ocean and Arabian Sea the genus has not been known so far from any other part of India. In a study on the sandy as well as mudflats of Bay of Bengal at Chandipur in Odisha, India, we observed quite a big numbers of castings of Arenicola during the end of December, 2015 and accidentally found a full grown individual at the sandy beach. From that point of view it is the first report of its kind from this part of the globe, especially from Bay of Bengal, India.
Źródło:
World Scientific News; 2017, 71; 22-27
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Macro Debris at Pangandaran Beach, Indonesia
Autorzy:
Purba, Noir P.
Apriliani, Izza M.
Dewanti, Lantun P.
Herawati, Hetti
Faizal, Ibnu
Powiązania:
https://bibliotekanauki.pl/articles/1177434.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Beach litter
Citumang river
Pangandaran beach
fishing gear
marine pollution
ocean currents
plastics packaging
Opis:
This research was to assest of marine debris in Pangandaran beach. Marine debris sampled from 2016 and 2017 around west Pangandaran using Ocean Conservancy (OC) form to find information about distribution, abundance, and types. The result is debris on the West coast of Pangandaran is originally comes from settlements, tourists, traders, and fishermen. The highest accumulation of marine debris happened in October with total weight 44.385 kilos, while the lowest accumulation happened in May with total weight 38 kilos. this is due to Citumang River had overflowed due to heavy rain and then was swept away along the coastline and piled up an area near the bay in October. In May and August the debris which most find is cigarette with the percentage 28% in May and 35% in August. While in October the debris which most find is a plastic bag with percentage 33%. From six types of debris, the dominant debris per types as follows: Most likely to find items is cigarette butts, Fishing gear is rope, Packaging material is other plastic/foam packaging, Personal hygiene is diapers, Other trash is cigarettes lighters, and Tiny trash less than 2.5 cm is foam pieces. The specific debris at Pangandaran beach is the fisheries tools like a rope and net, the rope embedded in the ground and make it hard to take out. One of the factor the large number of debris in Pangandaran is tourism activity and fisheries activity. In addition, the study indicates that there is a strong relationship between human activities and spreading of debris.
Źródło:
World Scientific News; 2018, 103; 144-156
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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