Offshore Tsunami Monitoring Network Design Using GPS Buoys and Coastal on-Site Sensors

Nagai, Toshihiko; Kato, Teruyuki; Moritani, Nobuo; Izumi, Hiroaki; Mitsui, Masao

doi:10.1142/9789812709554_0130

Cited by 7 publications

(4 citation statements)

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“…The latter is insensitive to wind-waves. A complete implementation is described by Nagai et al (2006); the system consists of a GPS buoy, fixed GPS base station and a tsunami detection algorithm.…”

Section: Gps For Hydrologymentioning

confidence: 99%

Determining slack tide with a GPS receiver on an anchored buoy

Valk

Savenije

Tiberius

et al. 2014

Hydrol. Earth Syst. Sci.

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Abstract. In this paper we present a novel method to determine the time of occurrence of tidal slack with a GPS receiver mounted on an anchored buoy commonly used to delineate shipping lanes in estuaries and tidal channels. Slack tide occurs when the tide changes direction from ebb to flood flow or from flood to ebb. The determination of this point in time is not only useful for shipping and salvaging, it is also important information for calibrating tidal models, for determining the maximum salt intrusion and for the further refinement of the theory on tidal propagation. The accuracy of the timing is well within 10 min and the method -able to operate in real time -is relatively cheap and easy to implement on a permanent basis or in short field campaigns.

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Section: Gps For Hydrologymentioning

confidence: 99%

Determining slack tide with a GPS receiver on an anchored buoy

Valk

Savenije

Tiberius

et al. 2014

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…The latter is insensitive for wind-waves. A complete implementation is described by Nagai et al (2006), the system consists of a GPS-buoy, fixed GPS base station and a tsunami detection algorithm.…”

Section: Gps For Hydrologymentioning

confidence: 99%

Determining slack tide with a GPS receiver on an anchored buoy

Valk¹,

Savenije²,

Tiberius³

et al. 2013

Preprint

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Abstract. In this paper we present a novel method to determine the time of occurrence of tidal slack with a GPS receiver mounted on an anchored buoy commonly used to delineate shipping lanes in estuaries and tidal channels. Slack tide occurs when the tide changes direction from ebb to flood flow, or from flood to ebb. The determination of this point in time is not only useful for shipping and salvaging, it is also important information for calibrating tidal models, for determining the maximum salt intrusion and for the further refinement of the theory on tidal propagation. The accuracy of the timing is well within 10 min and the method – able to operate in real-time – is relatively cheap and easy to implement on a permanent basis or in short field campaigns.

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“…Newly developed GPS buoy system, which applies RTK-GPS techniques to exact measurement of offshore floating buoys, is to be the future of offshore wave and tsunami monitoring system for Japanese coastal line [4] [5].…”

Section: Gps Buoy Systemmentioning

confidence: 99%

Characteristics of the Observed Offshore Wave Data by the GPS Buoys

Nagai

Shimizu

Sasaki

et al. 2008

OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean

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This paper explained characteristics of the observed offshore wave, tsunami and tide data for the half year in 2007, obtained by the two sets of the GPS buoy system installed off the Northern Pacific Coast of Japan by the Ports and Airports Department of the Tohoku Regional Development Bureau of the Ministry of Land, Infrastructure and Transport Japan. Two sets of the GPS buoy successfully observed, wave climate, abnormal high waves, and offshore astronomical tides with little data luck only about 2% of the total observation data. Offshore GPS buoys observed much bigger significant wave heights in both normal and abnormal sea states than the shallower seabed wave gauges, meaning that deep-sea wave observation is necessary in order to obtain offshore wave conditions.

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Offshore Tsunami Monitoring Network Design Using GPS Buoys and Coastal on-Site Sensors

Cited by 7 publications

References 0 publications

Determining slack tide with a GPS receiver on an anchored buoy

Determining slack tide with a GPS receiver on an anchored buoy

Determining slack tide with a GPS receiver on an anchored buoy

Characteristics of the Observed Offshore Wave Data by the GPS Buoys

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