scholarly journals Age and growth validation of the small spotted grunt Pomadasys commersonnii (Lacepède, 1801) from the northwestern coast of the Arabian Sea of Oman

2018 ◽  
Vol 34 (4) ◽  
pp. 834-841
Author(s):  
A. H. Al-Nahdi ◽  
B. Al-Siyabi ◽  
I. D. McCarthy
Keyword(s):  
Arabian Sea ◽  
Age And Growth ◽  
Northwestern Coast ◽  
Sea Of Oman ◽  
Pomadasys Commersonnii

scholarly journals Mesoscale eddies and submesoscale structures of Persian Gulf Water off the Omani coast in spring 2011

Ocean Science ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 687-701 ◽  
Author(s):  
Pierre L'Hégaret ◽  
Xavier Carton ◽  
Stephanie Louazel ◽  
Guillaume Boutin
Keyword(s):  
Persian Gulf ◽  
Arabian Sea ◽  
Cold Water ◽  
Mesoscale Eddies ◽  
High Salinity Water ◽  
Strait Of Hormuz ◽  
Persian Gulf Water ◽  
Salinity Water ◽  
The Persian Gulf ◽  
Sea Of Oman

Abstract. The Persian Gulf produces high-salinity water (Persian Gulf Water, PGW hereafter), which flows into the Sea of Oman via the Strait of Hormuz. Beyond the Strait of Hormuz, the PGW cascades down the continental slope and spreads in the Sea of Oman under the influence of the energetic mesoscale eddies. The PGW outflow has different thermohaline characteristics and pathways, depending on the season. In spring 2011, the Phys-Indien experiment was carried out in the Arabian Sea and in the Sea of Oman. The Phys-Indien 2011 measurements, as well as satellite observations, are used here to characterize the circulation induced by the eddy field and its impact on the PGW pathway and evolution. During the spring intermonsoon, an anticyclonic eddy is often observed at the mouth of the Sea of Oman. It creates a front between the eastern and western parts of the basin. This structure was observed in 2011 during the Phys-Indien experiment. Two energetic eddies were also present along the southern Omani coast in the Arabian Sea. At their peripheries, ribbons of freshwater and cold water were found due to the stirring created by the eddies. The PGW characteristics are strongly influenced by these eddies. In the western Sea of Oman, in 2011, the PGW was fragmented into filaments and submesoscale eddies. It also recirculated locally, thus creating salty layers with different densities. In the Arabian Sea, a highly saline submesoscale lens was recorded offshore. Its characteristics are analyzed here and possible origins are proposed. The recurrence of such lenses in the Arabian Sea is also briefly examined.

Distribution, age and growth of the diamondback squid, Thysanoteuthis rhombus (Cephalopoda: Thysanoteuthidae) from the tropical Arabian Sea

2020 ◽  
Vol 224 ◽  
pp. 105478
Author(s):  
Kurichithara K. Sajikumar ◽  
Geetha Sasikumar ◽  
V. Venkatesan ◽  
R. Vidya ◽  
P.S. Alloycious ◽  
...  
Keyword(s):  
Arabian Sea ◽  
Age And Growth

scholarly journals Environmental DNA reveals a multi‐taxa biogeographic break across the Arabian Sea and Sea of Oman

2021 ◽  
Author(s):  
Joseph D. DiBattista ◽  
Michael L. Berumen ◽  
Mark A. Priest ◽  
Maarten De Brauwer ◽  
Darren J. Coker ◽  
...  
Keyword(s):  
Arabian Sea ◽  
Environmental Dna ◽  
Sea Of Oman

scholarly journals Mesoscale variability in the Arabian Sea from HYCOM model results and observations: impact on the Persian Gulf Water path

Ocean Science ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 667-693 ◽  
Author(s):  
P. L'Hégaret ◽  
R. Duarte ◽  
X. Carton ◽  
C. Vic ◽  
D. Ciani ◽  
...  
Keyword(s):  
Persian Gulf ◽  
Arabian Sea ◽  
Meteorological Data ◽  
Mesoscale Eddies ◽  
Ocean Model ◽  
Water Masses ◽  
Dimensional Structure ◽  
Persian Gulf Water ◽  
The Persian Gulf ◽  
Sea Of Oman

Abstract. The Arabian Sea and Sea of Oman circulation and water masses, subject to monsoon forcing, reveal a strong seasonal variability and intense mesoscale features. We describe and analyze this variability and these features, using both meteorological data (from ECMWF reanalyses), in situ observations (from the ARGO float program and the GDEM – Generalized Digital Environmental mode – climatology), satellite altimetry (from AVISO) and a regional simulation with a primitive equation model (HYCOM – the Hybrid Coordinate Ocean Model). The model and observations display comparable variability, and the model is then used to analyze the three-dimensional structure of eddies and water masses with higher temporal and spatial resolutions than the available observations. The mesoscale features are highly seasonal, with the formation of coastal currents, destabilizing into eddies, or the radiation of Rossby waves from the Indian coast. The mesoscale eddies have a deep dynamical influence and strongly drive the water masses at depth. In particular, in the Sea of Oman, the Persian Gulf Water presents several offshore ejection sites and a complex recirculation, depending on the mesoscale eddies. The associated mechanisms range from coastal ejection via dipoles, alongshore pulses due to a cyclonic eddy, to the formation of lee eddies downstream of Ra's Al Hamra. This water mass is also captured inside the eddies via several mechanisms, keeping high thermohaline characteristics in the Arabian Sea. The variations of the outflow characteristics near the Strait of Hormuz are compared with variations downstream.

scholarly journals Variability of SST and ILD in the Arabian Sea and Sea of Oman in Association with the Monsoon Cycle

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Sartaj Khan ◽  
Shengchun Piao ◽  
Imran U. Khan ◽  
Bingchen Xu ◽  
Shazia Khan ◽  
...  
Keyword(s):  
Summer Monsoon ◽  
Arabian Sea ◽  
Southern Oscillation ◽  
Thermal Structure ◽  
Wind Forcing ◽  
Sea Surface ◽  
Central Basin ◽  
The South ◽  
South Central ◽  
Sea Of Oman

Sea surface temperature (SST) and isothermal layer depth (ILD) are important oceanic parameters and could play a significant role in understanding the upper thermal structure as well as improve the predictive capability of monsoons in the tropical oceans. In a disparate departure from the past research, the present study investigates the seasonal variability of SST and ILD in association with the monsoon cycle in the Arabian Sea and Sea of Oman regions by examination of Argo datasets for 2016-17. In this study, the ILD climatology is determined from temperature profiles provided by the Argo floats based on a threshold technique T z ≥ SST − 1 ° C   to investigate the region of stronger and weaker monsoon wind forcing. For SST, values of temperature are used nearest to the sea surface (depth z ≤ 5 m). The region is split into four distinct zones for an accurate description of the monsoon cycle: the south Arabian Sea, the central Arabian Sea, the north Arabian Sea, and the Sea of Oman. It is observed that summer monsoon is more pronounced in the south-central basin of the Arabian Sea, where ILD is deepening (>100 m in September 2016) mainly due to stronger wind forcing in this region. On the contrary, the Sea of Oman region is displayed with smaller ILD amplitude (<10 m in June 2016) with larger SST, meaning that this region is weakly influenced by the summer monsoon. The seasonal relationship established between ILD variability and monsoon cycle for 2016-17 shows that ILD could be a useful indicator for predicting summer monsoon in the Arabian Sea regions. Our analysis results indicate that the dynamics for SST variability are different in these regions and are influenced either by large-scale atmospheric forcing, such as the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), or by the effects of mesoscale variations occurring along the Oman-Arabian coast.

Age and growth of the little Indian squid, Loliolus hardwickei (Gray, 1849) in the Arabian Sea

2019 ◽  
Vol 99 (7) ◽  
pp. 1621-1625 ◽  
Author(s):  
Kurichithara Kunjumony Sajikumar ◽  
Geetha Sasikumar ◽  
Gishnu Mohan ◽  
Vasant Kripa ◽  
Puthenpurackal Simon Alloycious ◽  
...  
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Coastal Waters ◽  
Arabian Sea ◽  
Mature Female ◽  
Age And Growth ◽  
Daily Growth ◽  
Male And Female ◽  
Short Lifespan ◽  
Fast Growth Rate

AbstractAge and growth of the little Indian squid Loliolus hardwickei (Gray, 1849) were studied using samples collected in the coastal waters of Arabian Sea. Statolith increment counts demonstrated that L. hardwickei has a fast growth rate (dorsal mantle length: 0.31–0.73 mm day−1 in females and 0.27–0.56 mm day−1 in males) and a short lifespan of less than 6 months. Females are the larger sex and their daily growth rates were higher than in males. The oldest male and female were 110 and 130 days old; the youngest mature female and male were 62 and 52 days old respectively. The oviducal fecundity ranged from 104–480 eggs, mean = 360 eggs (14–23 eggs g−1 body weight).

Age and growth of longnose trevally (Carangoides chrysophrys ) in the Arabian Sea

2013 ◽  
Vol 29 (5) ◽  
pp. 1056-1060 ◽  
Author(s):  
I. Al-Rasady ◽  
A. Govender ◽  
S. M. Al-Jufaili
Keyword(s):  
Arabian Sea ◽  
Age And Growth

scholarly journals Mesoscale eddies and submesoscale structures of Persian Gulf Water off the Omani coast in Spring 2011

2015 ◽  
Vol 12 (6) ◽  
pp. 2743-2782
Author(s):  
P. L'Hégaret ◽  
X. Carton ◽  
S. Louazel ◽  
G. Boutin
Keyword(s):  
Persian Gulf ◽  
Arabian Sea ◽  
High Salinity ◽  
Cold Water ◽  
Mesoscale Eddies ◽  
High Salinity Water ◽  
Persian Gulf Water ◽  
Salinity Water ◽  
The Persian Gulf ◽  
Sea Of Oman

Abstract. The Persian Gulf produces a high salinity water (Persian Gulf Water, PGW hereafter) flowing into the Sea of Oman, in the northwestern Indian Ocean. Past the Strait of Hormuz, the PGW cascades down the continental slope and spreads in the Sea of Oman under the influence of the energetic mesoscale eddies with different thermohaline signatures and pathways depending of the season. In spring 2011, the Phys-Indien experiment was carried out in the Arabian Sea an in the Sea of Oman. This study uses the results from the measurements to characterize the water masses, their thermohaline and dynamical signatures. During the spring intermonsoon, an anticyclonic eddy is often observed at the mouth of the Sea of Oman. This structure was present in 2011 and created a front between the eastern and western part of the basin. As well two energetic gyres were present along the Omani coast in the Arabian Sea. At their peripheries, injections of fresh and cold water are found in relation with the stirring of the eddies. The PGW observed below or between these eddies have a different dilution depending of the position and formation periods of the gyres. Furthermore, in the western Sea of Oman, the PGW is fragmented in filaments and submesoscale eddies. As well, recirculation of the PGW is observed, thus having the presence of salty nearby patches with two densities. Offshore, in the Arabian Sea, a submesoscale lens was recorded. The different mechanisms leading to its formation and presence are assessed here.

Cabled ocean observatories in Sea of Oman and Arabian Sea

Eos ◽  
2012 ◽  
Vol 93 (31) ◽  
pp. 301-302 ◽  
Author(s):  
Steven F. DiMarco ◽  
Zhankun Wang ◽  
Ann Jochens ◽  
Marion Stoessel ◽  
Matthew K. Howard ◽  
...  
Keyword(s):  
Arabian Sea ◽  
Sea Of Oman
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