Pous, SP,Carton, X,Lazure, Pascal
Hydrology and circulation in the Strait of Hormuz and the Gulf of Oman—Results from the GOGP99 Experiment: 2. Gulf of Oman Journal Article
In: Journal of Geophysical Research: Oceans, vol. 109, no. 199, 2004, ISBN: 2156-2202.
Abstract | BibTeX | Tags: Gulf of Oman, Hydro-biology, oceanography, Sea of Oman, Strait of Hormuz
@article{,
title = {Hydrology and circulation in the Strait of Hormuz and the Gulf of Oman—Results from the GOGP99 Experiment: 2. Gulf of Oman},
author = {Pous, SP,Carton, X,Lazure, Pascal},
issn = {2156-2202},
year = {2004},
date = {2004-01-01},
journal = {Journal of Geophysical Research: Oceans},
volume = {109},
number = {199},
abstract = {Hydrological, ADCP, and drifting buoy data obtained during the GOGP99
Experiment in October and early November 1999 are analyzed to describe the Persian
Gulf Water (PGW) core and the regional circulation in the Gulf of Oman. The warm and
salty PGW core flows out of the Strait of Hormuz heading southeastward unto (25 200N,
57 E), approximately. From there, it cascades down the continental slope, veers
southwestward, and joins the Omani coast near (24 500N, 56 500E) to form a slope
current. This PGW current has then thermohaline maxima on isopycnal s0 = 26.5, near
220 m depth. Its thermohaline characteristics decrease along its progression to Ra’s al
Hadd (and then offshore into the Arabian Sea) but maintain a sharp contrast with
surrounding waters. Outflow variability at the Strait of Hormuz can be related to
downstream fluctuations of the thermohaline maxima in the PGW core at gulf scale and
over a 2- to 3-week period. Moreover, several mechanisms (baroclinic instability, flow
intermittency, cape effects) are examined to explain the widening of this PGW core
upstream and downstream of Ra’s al Hamra. In the eastern part of the Gulf of Oman, the
regional circulation is a cyclonic gyre. The circulation in the western part of the Gulf is
more complex, with the outflow of PGW and southeastward currents in the upper 250 m
near the Omani coast, and a recirculation of upwelled waters near Ra’s Jagin (on the
Iranian coast). The large cyclonic gyre occupies at least the upper 300 m of the water
column and undergoes little variation over a month. The PGW outflow in the northern
Arabian Sea is southward and located 50–100 km from the coast. It borders a shallower
northward current located offshore.},
keywords = {Gulf of Oman, Hydro-biology, oceanography, Sea of Oman, Strait of Hormuz},
pubstate = {published},
tppubtype = {article}
}
Hydrological, ADCP, and drifting buoy data obtained during the GOGP99
Experiment in October and early November 1999 are analyzed to describe the Persian
Gulf Water (PGW) core and the regional circulation in the Gulf of Oman. The warm and
salty PGW core flows out of the Strait of Hormuz heading southeastward unto (25 200N,
57 E), approximately. From there, it cascades down the continental slope, veers
southwestward, and joins the Omani coast near (24 500N, 56 500E) to form a slope
current. This PGW current has then thermohaline maxima on isopycnal s0 = 26.5, near
220 m depth. Its thermohaline characteristics decrease along its progression to Ra’s al
Hadd (and then offshore into the Arabian Sea) but maintain a sharp contrast with
surrounding waters. Outflow variability at the Strait of Hormuz can be related to
downstream fluctuations of the thermohaline maxima in the PGW core at gulf scale and
over a 2- to 3-week period. Moreover, several mechanisms (baroclinic instability, flow
intermittency, cape effects) are examined to explain the widening of this PGW core
upstream and downstream of Ra’s al Hamra. In the eastern part of the Gulf of Oman, the
regional circulation is a cyclonic gyre. The circulation in the western part of the Gulf is
more complex, with the outflow of PGW and southeastward currents in the upper 250 m
near the Omani coast, and a recirculation of upwelled waters near Ra’s Jagin (on the
Iranian coast). The large cyclonic gyre occupies at least the upper 300 m of the water
column and undergoes little variation over a month. The PGW outflow in the northern
Arabian Sea is southward and located 50–100 km from the coast. It borders a shallower
northward current located offshore.
Experiment in October and early November 1999 are analyzed to describe the Persian
Gulf Water (PGW) core and the regional circulation in the Gulf of Oman. The warm and
salty PGW core flows out of the Strait of Hormuz heading southeastward unto (25 200N,
57 E), approximately. From there, it cascades down the continental slope, veers
southwestward, and joins the Omani coast near (24 500N, 56 500E) to form a slope
current. This PGW current has then thermohaline maxima on isopycnal s0 = 26.5, near
220 m depth. Its thermohaline characteristics decrease along its progression to Ra’s al
Hadd (and then offshore into the Arabian Sea) but maintain a sharp contrast with
surrounding waters. Outflow variability at the Strait of Hormuz can be related to
downstream fluctuations of the thermohaline maxima in the PGW core at gulf scale and
over a 2- to 3-week period. Moreover, several mechanisms (baroclinic instability, flow
intermittency, cape effects) are examined to explain the widening of this PGW core
upstream and downstream of Ra’s al Hamra. In the eastern part of the Gulf of Oman, the
regional circulation is a cyclonic gyre. The circulation in the western part of the Gulf is
more complex, with the outflow of PGW and southeastward currents in the upper 250 m
near the Omani coast, and a recirculation of upwelled waters near Ra’s Jagin (on the
Iranian coast). The large cyclonic gyre occupies at least the upper 300 m of the water
column and undergoes little variation over a month. The PGW outflow in the northern
Arabian Sea is southward and located 50–100 km from the coast. It borders a shallower
northward current located offshore.
Pous, SP,Carton, Xavier,Lazure, Pascal
Hydrology and circulation in the Strait of Hormuz and the Gulf of Oman—Results from the GOGP99 Experiment: 1. Strait of Hormuz Journal Article
In: Journal of Geophysical Research: Oceans, vol. 109, no. 437, 2004, ISBN: 2156-2202.
Abstract | BibTeX | Tags: Arabian Gulf, hydrology, Musandam, oceanography, Oman, Sea of Oman, Strait of Hormuz
@article{,
title = {Hydrology and circulation in the Strait of Hormuz and the Gulf of Oman—Results from the GOGP99 Experiment: 1. Strait of Hormuz},
author = {Pous, SP,Carton, Xavier,Lazure, Pascal},
issn = {2156-2202},
year = {2004},
date = {2004-01-01},
journal = {Journal of Geophysical Research: Oceans},
volume = {109},
number = {437},
abstract = {In October and early November 1999, the GOGP99 experiment collected hydrological,
currentmeter, tide recorder, thermistor and drifting buoy data near the Strait of Hormuz. Data
analysis provides the water mass structure in the Strait: Persian Gulf Water (PGW) core is
banked against the Omani coast, while Indian Ocean Surface Water (IOSW) lies near the
Iranian coast. These water masses are most often covered by a homogeneous surface layer.
Thermohaline characteristics of the PGW core decrease substantially downstream, from the
Persian/Arabian Gulf to the Gulf of Oman. PGWand IOSW thermohaline characteristics
and distribution also exhibit notable changes at periods shorter than a month as shown by
repeated hydrological sections. The tidal signal measured south of the Strait by moored
ADCP and thermistor chains has predominant semi-diurnal M2 and S2 and diurnal K1
components and possesses a complex vertical structure. Tidal intensification near the surface
pycnocline is associated with noticeable internal waves. At subtidal timescale, mooring
recordings confirm the water mass variability observed in the repeated hydrological sections.
The mixed layer also deepens substantially during the 1-month period. Finally, trajectories of
surface buoys drogued at 15 m exhibit reversals over periods characteristic of changes in
wind direction},
keywords = {Arabian Gulf, hydrology, Musandam, oceanography, Oman, Sea of Oman, Strait of Hormuz},
pubstate = {published},
tppubtype = {article}
}
In October and early November 1999, the GOGP99 experiment collected hydrological,
currentmeter, tide recorder, thermistor and drifting buoy data near the Strait of Hormuz. Data
analysis provides the water mass structure in the Strait: Persian Gulf Water (PGW) core is
banked against the Omani coast, while Indian Ocean Surface Water (IOSW) lies near the
Iranian coast. These water masses are most often covered by a homogeneous surface layer.
Thermohaline characteristics of the PGW core decrease substantially downstream, from the
Persian/Arabian Gulf to the Gulf of Oman. PGWand IOSW thermohaline characteristics
and distribution also exhibit notable changes at periods shorter than a month as shown by
repeated hydrological sections. The tidal signal measured south of the Strait by moored
ADCP and thermistor chains has predominant semi-diurnal M2 and S2 and diurnal K1
components and possesses a complex vertical structure. Tidal intensification near the surface
pycnocline is associated with noticeable internal waves. At subtidal timescale, mooring
recordings confirm the water mass variability observed in the repeated hydrological sections.
The mixed layer also deepens substantially during the 1-month period. Finally, trajectories of
surface buoys drogued at 15 m exhibit reversals over periods characteristic of changes in
wind direction
currentmeter, tide recorder, thermistor and drifting buoy data near the Strait of Hormuz. Data
analysis provides the water mass structure in the Strait: Persian Gulf Water (PGW) core is
banked against the Omani coast, while Indian Ocean Surface Water (IOSW) lies near the
Iranian coast. These water masses are most often covered by a homogeneous surface layer.
Thermohaline characteristics of the PGW core decrease substantially downstream, from the
Persian/Arabian Gulf to the Gulf of Oman. PGWand IOSW thermohaline characteristics
and distribution also exhibit notable changes at periods shorter than a month as shown by
repeated hydrological sections. The tidal signal measured south of the Strait by moored
ADCP and thermistor chains has predominant semi-diurnal M2 and S2 and diurnal K1
components and possesses a complex vertical structure. Tidal intensification near the surface
pycnocline is associated with noticeable internal waves. At subtidal timescale, mooring
recordings confirm the water mass variability observed in the repeated hydrological sections.
The mixed layer also deepens substantially during the 1-month period. Finally, trajectories of
surface buoys drogued at 15 m exhibit reversals over periods characteristic of changes in
wind direction
Matsuyama, Masaji,Kitade, Yujiro,Senjyu, Tomoharu,Koike, Yoshio,Ishimaru, Takashi
Vertical structure of a current and density front in the Strait of Hormuz Journal Article
In: Offshore Environments of the ROPME after the War related Oil-Spill, no. 402, pp. 23-34, 1998.
BibTeX | Tags: currents, Musandam, oceanography, Sea of Oman, Strait of Hormuz, Sultanate of Oman
@article{,
title = {Vertical structure of a current and density front in the Strait of Hormuz},
author = {Matsuyama, Masaji,Kitade, Yujiro,Senjyu, Tomoharu,Koike, Yoshio,Ishimaru, Takashi},
year = {1998},
date = {1998-01-01},
journal = {Offshore Environments of the ROPME after the War related Oil-Spill},
number = {402},
pages = {23-34},
keywords = {currents, Musandam, oceanography, Sea of Oman, Strait of Hormuz, Sultanate of Oman},
pubstate = {published},
tppubtype = {article}
}