Monitoring Volume Transport through Measurement of Cable Voltage across the Korea Strait*

Kim, Kuh; Lyu, Sang Jin; Kim, Young-Gyu; Choi, Byung Ho; Taira, Keisuke; Perkins, Henry; Teague, William J.; Book, Jeffrey W.

doi:10.1175/1520-0426(2004)021<0671:mvttmo>2.0.co;2

Cited by 32 publications

(14 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Subsequently, the water transport estimates are regularly carried out across Florida Strait using undersea voltage measurements (Baringer and Larsen, 2001). Linear relationship between the submarine voltage data and the water transport was also reported by Kim et al (2004) and Nilsson et al (2007). Flosadóttir et al (1997) show that the relationship between voltage and cross-cable transport uctuations can be remarkably linear over long distances.…”

Section: Introductionsupporting

confidence: 59%

Can undersea voltage measurements detect tsunamis?

et al. 2010

View full text Add to dashboard Cite

The movement of electrically conducting ocean water in the ambient geomagnetic eld induces secondary electric and magnetic elds in the oceans. Ocean water transport is now routinely inferred from undersea cable voltage data. We try to answer the question whether the method could also be useful to detect tsunami. A barotropic shallow water model along with a three-dimensional electromagnetic induction code was used to predict the electric elds induced by the Indian Ocean Tsunami occurred on December 26, 2004. We show that the ocean ow related to the Indian Ocean Tsunami must have induced electric voltages of the order of ±500 mV across the existing submarine cables in the Indian Ocean. The electric elds induced by the Tsunami ow have strength within the range of ±10 mV/km, with enhancements along the main ow region and near the coasts and islands. Thus, making use of the in-service or retired submarine cables to measure the electric potential across oceans, it may be possible to detect water movement related to tsunami.

show abstract

Section: Introductionsupporting

confidence: 59%

Can undersea voltage measurements detect tsunamis?

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The volume transport through the Korea Strait ( Q K ) is converted from the motion‐induced voltage measured by the submarine cable (Figure 1) from March 1998 to April 2002 using the estimated linear relationship between the voltage and the observed transport [ Kim et al , 2004]. The geomagnetic effects on the observed voltage are removed before conversion although they are not significant at periods longer than 2 days.…”

Section: Data and Analysismentioning

confidence: 99%

“…Recently it has become possible to obtain a reliable estimate of the transport by the implementation of the vessel‐mounted ADCP [ Takikawa et al , 2005] and the bottom‐mounted, trawl‐resistant ADCP [ Teague et al , 2002]. Moreover, the motion‐induced voltage has been measured using the abandoned submarine cable between Pusan, Korea and Hamada, Japan (Figure 1) since March 1998 and the measured voltage showed a close linear relationship with the above two observed transports [ Kim et al , 2004]. Continuous measurement of cable voltage revealed large variability in the inflow through the Korea Strait on short‐period subinertial to interannual timescales and enabled us to investigate the driving mechanisms of various temporal variations in the flows through the straits of the East Sea.…”

Section: Introductionmentioning

confidence: 99%

“…Both the zonal and meridional SLDs are related to the large‐scale wind‐driven circulation in the North Pacific [ Nof , 2000]. However, the wind stress curl over the open ocean is maximum in winter and minimum in fall [ Blaha and Reed , 1982; Lee et al , 2001], while the transport through the Korea Strait is known to be maximum in summer and fall and minimum in winter and spring [ Teague et al , 2002; Lyu and Kim , 2003; Kim et al , 2004; Takikawa et al , 2005]. This discrepancy in time may result from topographic blocking of barotropic waves to propagate westward by the Izu‐Ogasawara Ridge and the Ryukyu Island chain (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Subinertial to interannual transport variations in the Korea Strait and their possible mechanisms

Lyu

Kim

2005

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

The voltage‐derived transport in the Korea Strait from March 1998 to April 2002 reveals various temporal variations such as subinertial, monthly, seasonal, and interannual variations. The driving mechanisms of these temporal variations in the flows through the straits and the mean sea level of the East Sea (Sea of Japan) are investigated using a simple analytical barotropic model. The East Sea is simplified as a flat‐bottomed semienclosed basin, and it is forced by the atmospheric pressure, the along‐strait wind stress, and the sea level differences along the straits. Despite its simplicity this model explains most variations and helps us understand dominant driving forces on each timescale. At the subinertial periods of 2–10 days the atmospheric pressure dominantly drives the flows into or out of the East Sea due to a Helmholtz resonance, whose period is about 3 days, and the mean sea level cannot respond isostatically. The effects of the atmospheric pressure on the transport variations become weak at long periods because there is enough time for the East Sea to be drained or filled through the strait flows as its mean sea level responds isostatically. On the other hand, the changes in the adjusted sea levels outside the straits of the East Sea cause the pressure gradient forces along the straits and induce most of variations in the strait flows and the mean sea level at the monthly to interannual periods.

show abstract

“…The directly observed Kuroshio transport in the ECS will also provide an opportunity, for the first time, to compare the Kuroshio transport in the ECS with the transport of the Japan/East Sea throughflow; the latter is being monitored by both submarine cable (Kim et al, 2004) and ship-of-opportunity (Takikawa et al, 2005).…”

Section: Impact/applicationsmentioning

confidence: 99%

Kuroshio Variability on the Shelf of the East China Sea

Wimbush

Watts²,

Chang³

2006

View full text Add to dashboard Cite

OBJECTIVESThrough the aforementioned ONR-supported project, an array of eleven IESs (inverted echo sounders) was deployed in the ECS for nearly two years between December 2002 and November 2004 to study the spatio-temporal structure of the Kuroshio. The IES array was deployed in the Okinawa Trough at depths deeper than 500m. The Kuroshio, however, extends to the outer continental shelf. This NICOP project aims to (1) observe the part of the Kuroshio over the outer continental shelf of the ECS and thus quantify its entire transport (along with IES data simultaneously obtained in the Okinawa Trough), and (2) determine the relationship between the IES-measured characteristics of the Kuroshio off the shelf and its transport over the shelf in order to estimate its total transport for the 23-month period of IES deployment. APPROACHTwo moorings equipped with acoustic Doppler current profilers (ADCPs, RDI Model WHS300) were deployed in October 2003 in the ECS at approximately 150~m and 280~m depths northwest of the IES array, in order to measure the Kuroshio flow over the outer shelf. At the shallower site (mooring A1), 1

show abstract

Monitoring Volume Transport through Measurement of Cable Voltage across the Korea Strait*

Cited by 32 publications

References 19 publications

Can undersea voltage measurements detect tsunamis?

Can undersea voltage measurements detect tsunamis?

Subinertial to interannual transport variations in the Korea Strait and their possible mechanisms

Kuroshio Variability on the Shelf of the East China Sea

Contact Info

Product

Resources

About