Energy balance of the intertidal zone of Western Hudson bay I: Ice‐free period

Silis, Arvids; Rouse, Wayne R.; Hardill, Steve

doi:10.1080/07055900.1989.9649339

Cited by 13 publications

(6 citation statements)

References 13 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results presented in this study and in Silis et al (1989) include the period from early spring to late fall. It encompasses one third of the year but receives 50% of the solar radiation, 85% of the positive net radiation and experiences almost all of the above-freezing air temperatures.…”

Section: Discussionmentioning

confidence: 99%

“…The locations of the fast-ice measurement site and the spit site that was used for measurement during the floating-ice period are shown in Silis et al (1989). The fast-ice site was chosen for the representativeness of its ice topography and for its ease of access.…”

Section: Methods a Sitesmentioning

confidence: 99%

“…Equation (1) operates to increase the relative magnitude of ß*(IZ) as the amount of floating ice diminishes. The fluxes of sensible heat, Q H , and latent heat, Q E , were estimated using the aerodynamic flux equations outlined in Silis et al (1989).…”

Section: Methods a Sitesmentioning

confidence: 99%

See 2 more Smart Citations

Energy balance of the intertidal zone of Western Hudson bay II: Ice‐dominated periods and seasonal patterns

Rouse

1989

Atmosphere-Ocean

Self Cite

View full text Add to dashboard Cite

This study treats the energy balance during fast-ice and floating-ice conditions and examines overall seasonal patterns. The rate of ablation of the fast ice was controlled equally by net radiation and air temperature. The ratio of net/solar radiation increased 2.5 times during the ablation period owing to the decrease in ice albedo. Air temperature in the ablation zone was up to 8°C colder than that over the adjacent snow-free terrestrial surface and

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methods a Sitesmentioning

confidence: 99%

See 1 more Smart Citation

Energy balance of the intertidal zone of Western Hudson bay II: Ice‐dominated periods and seasonal patterns

Rouse

1989

Atmosphere-Ocean

Self Cite

View full text Add to dashboard Cite

show abstract

“…Each of these submersions had a transient warming effect of up to 1.5"C at 1 m depth and l.O°C at 1.5 m. Unfortunately no soil surface temperatures are available for that period. However, in summer tide water is usually colder than the soil surface and contributes to its cooling, as demonstrated by Silis et al (1989) in a similar environment. The warming effect at 1 and 1.5 m must be due to tide-water percolation into the thawed but colder than surface active layer.…”

Section: Thermistor Cables 1 and 3 (Point Data)mentioning

confidence: 93%

The thermal regime of intertidal permafrost, George River estuary, Ungava Bay, Quebec

Allard¹,

Fortier²,

Séguin³

1992

Can. J. Earth Sci.

View full text Add to dashboard Cite

Permafrost in tidal-marsh sediments was studied along the estuary of George River, Ungava Bay, northern Quebec. In this macrotidal environment, wide tidal flats and marshes lie in bays along the shoreline. Discontinuous permafrost bodies occur in the silty sediments underlying the marshes in the upper part of the intertidal zone, where submersions by large tides and storm surges are rare and where the icefoot freezes to the ground in winter. The permafrost is about 5 m thick, saline, and ice poor. According to logged thermal data, a freezing-point depression of 0.9"C is estimated for the intertidal sediments. Tidal submersions during the ice-free season have a transient warming effect on the soil profile due to water percolation in the active layer and delay freeze back at the beginning of winter. Observations in shallow drill holes and along a thermistor cable indicate that the intertidal permafrost degraded at the Kangiqsualujjuaq observation site from 1984 . From 1987 and logged data clearly show aggradation and cooling of the permafrost. Those changes in ground thermal regime are the result of recent climatic variations. Dans le contexte macro-tidal de la baie d'Ungava de vastes vasikres et des marais intertidaux s'Ctendent dans les baies le long du littoral. Des Ctendues de pergClisol discontinu apparaissent dans les vases sous les marais intertidaux, 18 ou les submersions par les grandes marCes et les crues de tempCtes sont peu nombreuses et oh le pied de glace adhkre au sol en hiver. Ce pergClisol mesure environ 5 m d'kpaisseur, est salin et pauvre en glace. A partir d'enregistrements thermiques continus, il est possible d'estimer que I'abaissement du point de congClation des sCdiments est de I'ordre de 0,9"C. Les submersions markgraphiques durant la pCriode sans couvert glaciel rkchauffent transitoirement le profil de sol suite ? I la percolation d'eau dans le mollisol et retardent le regel au dCbut de I'hiver. Nos observations dans des trous de forages et le long d'un ciible 8 thermistances indiquent que le pergClisol intertidal s'est dCgradC au site d'observation de Kangiqsualujjuaq de 1984 a 1987. De 1987 8 1990, des observations et des donnCes thermiques continues montrent un accroissement et un refroidissement du pergCliso1. Ces changements dans le regime thermique du sol sont le rCsultat de variations climatiques rCcentes.

show abstract

“…Furthurmore, the standing water could also be an important consumer of incoming radiation in some vegetated wetlands and open water area (Burba et al, 1999a;1999b;1999c;Heilman et al, 2000;Silis et al, 1989). Although meaningful explanation on the regulations of ecosystem energy fluxes have been made in peatland (Kurbatova et al, 2002;Admiral et al, 2006;Admiral and Lafleur, 2007), prairie wetland (Burba et al, 1999a;1999b;1999c), and coastal wetland (Lafleur and Rouse, 1988;Silis et al, 1989), very little is known about the energy fluxes in estuarine wetland, where tidal activities and upstream hydrology can play significant roles in regulating the magnitude and dynamics of the energy budget through horizontal transportation of mass and energy (Odum, 2000;Teal and Howes, 2000).…”

Section: Introductionmentioning

confidence: 99%

Seasonal changes of energy fluxes in an estuarine wetland of Shanghai, China

et al. 2010

View full text Add to dashboard Cite

The energy budget and regulating factors were investigated over an estuarine wetland during one year of continuous measurement in 2006. The results show that the seasonal changes of the energy fluxes and Bowen ratio (β) were greatly affected by incoming shortwave radiation and canopy growth. During the non-growing season and early-growing season, sensible heat (H) dominated the energy flux, and β could reach a maximum of 2.5, while during most of the growing season, latent heat dominated the energy flux and β fluctuated from 0.4 to 1.0. The energy budget ratio in growing season was about 0.76, and the value would be higher if heat exchange during tidal flooding was included. During tidal flooding days, β was slightly higher than that at exposure days in most cases. Vegetation cover seems exert little effect on energy partitioning except in March when the standing dead grass intercepted the incoming radiation that might reach the soil surface and reduce the turbulence between soil and atmosphere, thus suppressing the evaporation from the soil though the soil mositure was high at that time.

show abstract

Energy balance of the intertidal zone of Western Hudson bay I: Ice‐free period

Abstract: This study reports on tower measurements from the intertidal zone taken during the ice-free period between August 1 and September 20, 1985

Cited by 13 publications

References 13 publications

Energy balance of the intertidal zone of Western Hudson bay II: Ice‐dominated periods and seasonal patterns

Energy balance of the intertidal zone of Western Hudson bay II: Ice‐dominated periods and seasonal patterns

The thermal regime of intertidal permafrost, George River estuary, Ungava Bay, Quebec

Seasonal changes of energy fluxes in an estuarine wetland of Shanghai, China

Contact Info

Product

Resources

About