Changes in wave climate off Hiratsuka, Japan, as affected by storm activity over the western North Pacific

Sasaki, Wataru; Iwasaki, Shinsuke; Matsuura, Takeshi; Iizuka, Satoshi; Watabe, Isao

doi:10.1029/2004jc002730

Cited by 15 publications

(17 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, because of the difficulties in maintaining buoys, long time series (several years) are rare. For this reason buoy data are only useful for wave climates in certain locations (see, e.g., Sasaki et al 2005) and are not fully adapted to estimates of wave descriptions over subbasins of the Mediterranean Sea.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wave Height Variability Using Altimeter Measurements: Application to the Mediterranean Sea

Queffeulou

Bentamy

2007

Journal of Atmospheric and Oceanic Technology

View full text Add to dashboard Cite

Altimeter significant wave height (SWH) measurement data from six satellite missions covering 14 yr were analyzed over the Mediterranean Sea. First, data correction and screening were performed using the same method for the six altimeters [European Remote Sensing Satellites (ERS-1 and ERS-2), Ocean Topography Experiment (TOPEX), Geosat Follow-On, Jason, and Environmental Satellite (Envisat)]. The data from the TOPEX and Jason missions enabled the construction of seasonal maps of along-track SWH mean values and standard deviations. These reveal the regional short-scale sea state features associated with the specific meteorological patterns of the various geographical basins. Time series of monthly SWH mean values and standard deviations from each satellite and over the whole Mediterranean Sea were calculated and seen to be in good agreement, thus demonstrating interannual variability. The six altimeter missions used together enable the investigation of the monthly annual cycle at the short scales of the various subbasins. Significant differences are observed between the western and eastern parts of the Mediterranean Sea. The annual SWH cycle changes in both shape and amplitude depending on the subbasin. Analysis of the seasonal interannual variability confirms the existence of some degree of independence between the subbasins. Thanks to multisatellite missions and homogeneous corrections of the altimeter data, SWH time and space characteristics were able to be obtained at regional short scales. These results are independent of numerical wind and wave models. This method can be applied to any geographical region.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Wave Height Variability Using Altimeter Measurements: Application to the Mediterranean Sea

Queffeulou

Bentamy

2007

Journal of Atmospheric and Oceanic Technology

View full text Add to dashboard Cite

show abstract

“…Bacon and Carter, 1991;Swail and Cox, 2000;Woolf et al, 2002;Wolf and Woolf, 2006), and the Northern Hemisphere as a whole (e.g. Graham, 2003;Wang and Swail, 2001;Sasaki et al, 2005). Description of the wave climate of the SH is limited to a few regional studies (e.g.…”

Section: Introductionmentioning

confidence: 99%

Variability and trends in the directional wave climate of the Southern Hemisphere

Hemer

Church

Hunter

2009

Intl Journal of Climatology

245

206

View full text Add to dashboard Cite

The effect of interannual climate variability and change on the historic, directional wave climate of the Southern Hemisphere is presented. Owing to a lack of in situ wave observations, wave climate in the Southern Hemisphere is determined from satellite altimetry and global ocean wave models. Altimeter data span the period 1985 to present, with the exception of a 2‐year gap in 1989–1991. Interannual variability and trends in the significant wave height are determined from the satellite altimeter record (1991 to present), and the dominant modes of variability are identified using an empirical orthogonal function (EOF) analysis. Significant wave heights in the Southern Ocean are observed to show a strong positive correlation with the Southern Annular Mode (SAM), particularly during Austral autumn and winter months. Correlation between altimeter derived significant wave heights and the Southern Oscillation Index is observed in the Pacific basin, which is consistent with several previous studies. Variability and trends of the directional wave climate are determined using the ERA‐40 Waves Re‐analysis for the period 1980–2001. Significant wave height, mean wave period and mean wave direction data are used to describe the climate of the wave energy flux vector. An EOF analysis of the wave energy flux vector is carried out to determine the dominant modes of variability of the directional seasonal wave energy flux climate. The dominant mode of variability during autumn and winter months is strongly correlated to the SAM. There is an anti‐clockwise rotation of wave direction with the southward intensification of the Southern Ocean storm belt associated with the SAM. Clockwise rotation of flux vectors is observed in the Western Pacific Ocean during El‐Nino events. Directional variability of the wave energy flux in the Western Pacific Ocean has previously been shown to be of importance to sand transport along the south‐eastern Australian margin, and the New Zealand region. The directional variability of the wave energy flux of the Southern Ocean associated with the SAM is expected to be of importance to the wave‐driven currents responsible for the transport of sand along coastal margins in the Southern Hemisphere, in particular those on the Southern and Western coastal margins of the Australian continent. Copyright © 2009 Royal Meteorological Society

show abstract

“…points 12, 14, and 16) has relatively large interannual variability in summer (Figure 2a). This variability would be induced by western North Pacific typhoon activity associated with El Niño events [ Sasaki et al , 2005; Sasaki and Hibiya , 2007]. In winter, interannual variability of the wave energy is large on the Japan Sea coast (Figure 2d) owing to the interannual variability of significant wave height rather than that of the wave period (Figures 2e and 2f).…”

Section: Resultsmentioning

confidence: 99%

Changes in wave energy resources around Japan

Sasaki

2012

Geophysical Research Letters

View full text Add to dashboard Cite

.[1] The climatology and long-term trend of wave energy resources around Japan were estimated from in situ wave data measured at 25 observation points during 1980 to 2009. The climatological annual mean wave energy around Japan was estimated to be 6.4 kW m À1 , and the long-term trend was 0.27 kW m À1 /30-yr. Our results indicate that the longterm trend in wave energy varies among areas and seasons. There is a marked increasing trend in wave energy in the southern half of the east coast of Japan. Increased average wave period and height contributed to this trend on the east coast. We also found an increasing trend in surface wind speeds east of Japan. These results suggest that more frequent swells have been generating greater wave energy off Japan's east coast during the last decade.

show abstract

Changes in wave climate off Hiratsuka, Japan, as affected by storm activity over the western North Pacific

Cited by 15 publications

References 14 publications

Analysis of Wave Height Variability Using Altimeter Measurements: Application to the Mediterranean Sea

Analysis of Wave Height Variability Using Altimeter Measurements: Application to the Mediterranean Sea

Variability and trends in the directional wave climate of the Southern Hemisphere

Changes in wave energy resources around Japan

Contact Info

Product

Resources

About