A multi‐sensor approach to wetland flood monitoring

Töyrä, Jessika; Pietroniro, Alain; Martz, Lawrence W.; Prowse, Terry D.

doi:10.1002/hyp.1021

Cited by 87 publications

(27 citation statements)

References 15 publications

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“…Because two large floods occurred in 1996 near the completion of the NRBS, the follow-up Northern Rivers Ecosystem Initiative (NREI) initiated a study to evaluate the vegetative response to the floods (e.g. Pietroniro et al, 1999;Töyrä et al, 2002). At the same time, studies of waterfowl and muskrat response were also initiated by B.C.…”

Section: Ecological Response To Floodingmentioning

confidence: 99%

A review of hydroecological results of the Northern River Basins Study, Canada. Part 2. Peace–Athabasca Delta

Prowse¹,

Conly

2002

River Research & Apps

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The Peace-Athabasca Delta (PAD) in northern Canada is one of the world's largest freshwater deltas. Concern developed over the ecological health of this system in the early 1970s following regulation of its main headwater tributary, the Peace River. Continued drying of the delta into the 1990s resulted in the initiation of two major science programs, the Northern River Basins Study and the Peace-Athabasca Delta Technical Studies. Recognizing the importance of water to restoring and maintaining biological productivity and diversity of the PAD, a series of studies was initiated to explain the reasons for the protracted drying and to design methods to restore flooding. These studies demonstrated that open-water floods from the Peace River were unlikely to flood the ecologically sensitive perched basins within the PAD. Moreover they discovered that most large-scale overbank flooding resulted from ice-jams formed during spring break-up. Increases in freeze-up ice levels due to enhanced winter flows from the reservoir and a decrease in spring snowmelt runoff from downstream tributaries were suggested as being responsible for a decline in the frequency and severity of ice-jam floods. Based on results from numerical modelling studies of ice-jams, a flow augmentation strategy was designed to aid the formation of ice-jams near the PAD. Results of a test trial based on this strategy are presented. An update is also provided about ecological studies conducted since the delta was recharged by floodwaters in 1996.

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Section: Ecological Response To Floodingmentioning

confidence: 99%

A review of hydroecological results of the Northern River Basins Study, Canada. Part 2. Peace–Athabasca Delta

Prowse¹,

Conly

2002

River Research & Apps

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“…Detailed results of advances in using the multi-sensor approach for flood mapping of the PAD are described by Töyrä et al (2001Töyrä et al ( , 2002 and Pietroniro and Töyrä (2004). Overall, the techniques permitted a multi-year time series of percentage areas covered by open water, flooded vegetation and non-flooded land as shown in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

Climate Change, Flow Regulation and Land-Use Effects on the Hydrology of the Peace-Athabasca-Slave System; Findings from the Northern Rivers Ecosystem Initiative

Prowse

Beltaos

Gardner

et al. 2006

Environ Monit Assess

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Abstract. The Northern Rivers Ecosystem Initiative (NREI) was established in the late 1990s to address important science questions resulting from previous studies undertaken by the Northern Rivers Basin Study (NRBS). This manuscript summarizes the results from a number of reports on hydrologic research conducted on the Peace-Athabasca-Slave river and lake systems. Specific concerns expressed by the NRBS and subsequent NREI focused on how these systems were being affected by climate change, flow regulation and land-use changes. Issues addressed in this report include: the fate of aquatic perched basins within the Peace-Athabasca Delta under historical and future climate trends; the sources of major floods that replenish these basins and how the frequency, magnitude and source areas of such events have changed over time; the synoptic weather patterns and atmospheric teleconnections that are responsible for the generation of major snowmelt runoff that drive major floods; the potential effect that climate and land-use changes might have on basin runoff and delta lake levels; the specific hydro-climatic conditions required to produce major ice-jam floods on the Peace River and how these may be altered by climate change; remote-sensing methods to document delta flooding and vegetation change; and the dual effect of climate and flow regulation on the water levels of Great Slave Lake and how these may affect other nearshore processes, particularly wind seiches, that influence flooding of the Slave River Delta. A review of the major findings and recommendations for future research concludes the report.

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“…The innovation of microwave RS, particularly radar RS, resolves the problem associated with optical sensors, although microwave data may produce different types of errors (Palmann et al 2008 ;Dewan et al 2006 ;Taft et al 2003 ;Töyora et al 2002 ) . However, radar RS is a viable alternative data source to traditional optical sensing (Foody 1988 ) , particularly for monsoon countries (Imhoff et al 1987 ) .…”

Section: Flood Mapping and Monitoringmentioning

confidence: 99%

Hazards, Risk, and Vulnerability

Dewan

2013

Springer Geography

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Natural hazard terminologies with existing models of vulnerability, hazard, and risk are presented in this chapter. A conceptual framework has been developed based on hazard literature. The basic premise of the framework is based on Cutter's place of hazard theory with inputs from recent literature. In the framework, hazard is viewed as a threat that has the potential to overwhelm people, property, and the environment. It is a pre-existing condition that can turn into a catastrophe depending on the in fl uence of exogenous and endogenous factors. Exposure to hazard is treated as given and is an implicit element. The vulnerability element is perceived as the interactive effects of the social and physical aspects of a system (e.g., urban) regarding the causal process of hazards. Contrary to some conceptualizations, the framework views that the total vulnerability of a community depends on physical, social, and existing coping capacity attributes, and therefore, the calculation of the total vulnerability should consider these elements simultaneously. Risk is conceptualized as the product of hazard and vulnerability. To minimize the effects of disasters, it is imperative to take appropriate measures to reduce vulnerability rather than risk.The utilization of geospatial techniques in fl ood risk management is separated into three categories: fl ood mapping, damage assessment, and evaluation of fl ood risk and vulnerability. Biophysical and socioeconomic data that are sourced from remote sensing, census geography, and other spatial databases are employed to evaluate fl ood-related risk in diverse environments. A variety of methods-comprising inductive, deductive, and multi-criteria evaluation-are used to determine fl ood vulnerability and risk as evidenced by the literature survey. It reveals that geospatial techniques can be utilized effectively in the entire spectrum of the disaster cycle, which can save lives and property from natural hazards such as fl ood, as well as support informed decision making during emergencies.

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A multi‐sensor approach to wetland flood monitoring

Cited by 87 publications

References 15 publications

A review of hydroecological results of the Northern River Basins Study, Canada. Part 2. Peace–Athabasca Delta

A review of hydroecological results of the Northern River Basins Study, Canada. Part 2. Peace–Athabasca Delta

Climate Change, Flow Regulation and Land-Use Effects on the Hydrology of the Peace-Athabasca-Slave System; Findings from the Northern Rivers Ecosystem Initiative

Hazards, Risk, and Vulnerability

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