Delineating land/forest fire burnt scars with ERS Interferometric Synthetic Aperture Radar

Liew, Soo Chin; Kwoh, Leong Keong; Padmanabhan, K. A.; Lim, Oo Kaw; Lim, H. S.

doi:10.1029/1999gl900189

Cited by 21 publications

(10 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several techniques have been developed for using visible, infrared and thermal data to detect and map active res and burn scars (Flannigan 1986, Cahoon et al 1992, 1994, Ahern et al 2000. The utility of Synthetic Aperture Radar (SAR) data for mapping re scars has been more recently documented (Landry et al 1995, Bourgeau-Chave z et al 1997, Liew et al 1999 ), but research shows SAR has unique capabilities that may compliment and enhance multi-spectral techniques for re scar monitoring.…”

Section: Introductionmentioning

confidence: 98%

Mapping fire scars in global boreal forests using imaging radar data

Bourgeau-Chavez¹,

Kasischke²,

Brunzell³

et al. 2002

International Journal of Remote Sensing

View full text Add to dashboard Cite

This study is an extension of earlier research which demonstrated the utility of ERS SAR data for detection and monitoring of re-disturbed boreal forests of Alaska. Fire scars were mappable in Alaska due to the ecological changes that occur post-burn including increased soil moisture. High soil moisture caused a characteristic enhanced backscatter signal to be received by the ERS sensor from burned forests. Since regional ecological di V erences in the global boreal biome may have an e V ect on post-re ecosystem changes, it may also a V ect how re scars appear in C-band SAR imagery. In the current study we evaluate the use of C-band SAR data to detect, map and monitor boreal re scars globally. Study sites include four regions of Canada and an area in central Russia. Fire boundaries were mapped from SAR data without a priori knowledge of re scar locations. SAR-derived maps were validated with re service records and eld checks. Based on results from test areas in Northwest Territories, Ontario, southeastern Quebec, and central Russia, C-band SAR data have high potential for use in detecting and mapping re scars globally.

show abstract

Section: Introductionmentioning

confidence: 98%

Mapping fire scars in global boreal forests using imaging radar data

Bourgeau-Chavez¹,

Kasischke²,

Brunzell³

et al. 2002

International Journal of Remote Sensing

View full text Add to dashboard Cite

show abstract

“…Active microwave sensors do not require "optical visibility" and are not sensitive to weather conditions or cloud cover. Therefore, SAR sensors provide valuable information to complement and enhance multi-spectral observations for fire mapping [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Although recent studies have been proposed [44], the specific applicability of the available microwave scattering models has not been fully assessed in this context. Accordingly, empirical models are typically employed [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Integration of Optical and SAR Data for Burned Area Mapping in Mediterranean Regions

et al. 2015

View full text Add to dashboard Cite

Abstract:The aim of this paper is to investigate how optical and Synthetic Aperture Radar (SAR) data can be combined in an integrated multi-source framework to identify burned areas at the regional scale. The proposed approach is based on the use of fuzzy sets theory and a region-growing algorithm. Landsat TM and (C-band) ENVISAT Advanced Synthetic Aperture Radar (ASAR) images acquired for the year 2003 have been processed to extract burned area maps over Portugal. Pre-post fire SAR backscatter temporal difference has been integrated with optical spectral indices to the aim of reducing confusion between burned areas and low-albedo surfaces. The output fuzzy score maps have been compared with reference fire perimeters provided by the Fire Atlas of Portugal. Results show that commission and omission errors in the output burned area maps are a function of the threshold applied to the fuzzy score maps; between the two extremes of the greatest producer's accuracy (omission error < 10%) and user's accuracy (commission error < 5%), OPEN ACCESSRemote Sens. 2015, 7 1321 an intermediate threshold value provides errors of about 20% over the study area. The integration of SAR backscatter allowed reducing local commission errors from 65.4% (using optical data, only) to 11.4%, showing to significantly mitigate local errors due to the presence of cloud shadows and wetland areas. Overall, the proposed method is flexible and open to further developments; also in the perspective of the European Space Agency (ESA) Sentinel missions operationally providing SAR and optical datasets.

show abstract

“…Apart from a few attempts to apply radar sensors for burnt area mapping (e.g. Liew et al 1999;Siegert and Hoffman 2000), practically all attempts at automated or semi-automated medium-to coarse-resolution burnt area mapping approaches in this region have been based on multi-temporal analysis of optical remote-sensing datasets. This can be achieved by the creation of multi-temporal composite images or comparing each observation to the previous available observation (or several proceeding observations).…”

Section: Burnt Area Mapping In Insular Southeast Asian Conditions 41mentioning

confidence: 99%

Detection of vegetation fires and burnt areas by remote sensing in insular Southeast Asian conditions: current status of knowledge and future challenges

Miettinen

Hyer²,

Chia

et al. 2013

International Journal of Remote Sensing

View full text Add to dashboard Cite

The humid tropical insular Southeast Asian region is one of the most biologically diverse areas in the world. It contains around 70 Gt of carbon stored in peat deposits susceptible to burning when drained and it has significantly higher population density than any other humid tropical region. This region experiences yearly fire activity of anthropogenic origin with widely varying extent and severity. At the same time, there are several geographic, climatic, and social aspects that complicate fire monitoring in the region. In this review article, we analyse the current knowledge and limitations of active fire detection and burnt area mapping in insular Southeast Asia, highlighting the special characteristics of the region that affect all types of remote-sensing-based regional-level fire monitoring. We conclude that the monitoring methods currently employed have serious limitations that directly affect the reliability of results for fire and burnt area monitoring in this region. With the materials and methods presently available, the regional and global effects of fire activity taking place in insular Southeast Asia are in danger of being underestimated. New approaches utilizing higher spatial and temporal resolution remote-sensing data are needed for more detailed quantification of fire activity and subsequently improved estimation of the effects of fires in this region.

show abstract

Delineating land/forest fire burnt scars with ERS Interferometric Synthetic Aperture Radar

Cited by 21 publications

References 11 publications

Mapping fire scars in global boreal forests using imaging radar data

Mapping fire scars in global boreal forests using imaging radar data

Integration of Optical and SAR Data for Burned Area Mapping in Mediterranean Regions

Detection of vegetation fires and burnt areas by remote sensing in insular Southeast Asian conditions: current status of knowledge and future challenges

Contact Info

Product

Resources

About