DOI: 10.5194/hess-22-1543-2018
Scopus记录号: 2-s2.0-85042699549
论文题名: Quantification of surface water volume changes in the Mackenzie Delta using satellite multi-mission data
作者: Normandin C ; , Frappart F ; , Lubac B ; , Bélanger S ; , Marieu V ; , Blarel F ; , Robinet A ; , Guiastrennec-Faugas L
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2018
卷: 22, 期: 2 起始页码: 1543
结束页码: 1561
语种: 英语
Scopus关键词: Biogeochemistry
; Digital storage
; Dynamics
; Environmental impact
; Flood control
; Floods
; Geodetic satellites
; Radiometers
; Satellites
; Surface discharges
; Surface waters
; Water levels
; Water resources
; Annual amplitude
; Annual variations
; Biogeochemical cycle
; Multispectral images
; Remotely-sensed observations
; Satellite information
; Spatial resolution
; Temporal evolution
; Rivers
; Envisat
; ERS
; ice breakup
; MODIS
; quantitative analysis
; remote sensing
; SARAL
; satellite data
; satellite mission
; spatial resolution
; surface water
; temporal evolution
; volume change
; water level
; water storage
; Arctic Ocean
; Canada
; Mackenzie Delta
; Northwest Territories
英文摘要: Quantification of surface water storage in extensive floodplains and their dynamics are crucial for a better understanding of global hydrological and biogeochemical cycles. In this study, we present estimates of both surface water extent and storage combining multi-mission remotely sensed observations and their temporal evolution over more than 15 years in the Mackenzie Delta. The Mackenzie Delta is located in the northwest of Canada and is the second largest delta in the Arctic Ocean. The delta is frozen from October to May and the recurrent ice break-up provokes an increase in the river's flows. Thus, this phenomenon causes intensive floods along the delta every year, with dramatic environmental impacts. In this study, the dynamics of surface water extent and volume are analysed from 2000 to 2015 by combining multi-satellite information from MODIS multispectral images at 500 m spatial resolution and river stages derived from ERS-2 (1995-2003), ENVISAT (2002-2010) and SARAL (since 2013) altimetry data. The surface water extent (permanent water and flooded area) peaked in June with an area of 9600 km2 (±200 km2) on average, representing approximately 70 % of the delta's total surface. Altimetry-based water levels exhibit annual amplitudes ranging from 4 m in the downstream part to more than 10 m in the upstream part of the Mackenzie Delta. A high overall correlation between the satellite-derived and in situ water heights (R > 0.84) is found for the three altimetry missions. Finally, using altimetry-based water levels and MODIS-derived surface water extents, maps of interpolated water heights over the surface water extents are produced. Results indicate a high variability of the water height magnitude that can reach 10 m compared to the lowest water height in the upstream part of the delta during the flood peak in June. Furthermore, the total surface water volume is estimated and shows an annual variation of approximately 8.5 km3 during the whole study period, with a maximum of 14.4 km3 observed in 2006. The good agreement between the total surface water volume retrievals and in situ river discharges (R Combining double low line 0.66) allows for validation of this innovative multi-mission approach and highlights the high potential to study the surface water extent dynamics. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79375
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: EPOC, UMR 5805, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, Pessac, France; GET-GRGS, UMR 5563, CNRS/IRD/UPS, Observatoire Midi-Pyrénées, Toulouse, France; LEGOS-GRGS, UMR 5566, CNRS/IRD/UPS, Observatoire Midi-Pyrénées, Toulouse, France; Dép. Biologie, Chimie et Géographie, Groupe BOREAS and Québec-Océan, Université du Québec À Rimouski, 300 allée des ursulines, Rimouski, QC, Canada
Recommended Citation:
Normandin C,, Frappart F,, Lubac B,et al. Quantification of surface water volume changes in the Mackenzie Delta using satellite multi-mission data[J]. Hydrology and Earth System Sciences,2018-01-01,22(2)