Special UNISPACE III volume

Marsteller, Deborah

Bibliographic data

Monograph

Persistent identifier:: 856485039

Author:: Marsteller, Deborah

Title:: Special UNISPACE III volume

Sub title:: including: ISPRS Workshop on "Resource Mapping from Space", ISPRS-EARSeL Workshop on "Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters", ISPRS-NASA Seminar on "Environment and Remote Sensing for Sustainable Development", July 1999, Vienna, Austria

Scope:: IV, 170 Seiten

Year of publication:: 1999

Place of publication:: Coventry

Publisher of the original:: RICS Books

Identifier (digital):: 856485039

Illustration:: Illustrationen, Diagramme, Karten

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: ISPRS/EARSeL Workshop on "Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters"

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: NATURAL DISASTERS REMOTE SENSING CAPABILITIES AND APPLICATIONS IN A WIDE CONTEXT. P. Gudmandsen

Document type:: Monograph

Structure type:: Chapter

I5PR5 UNISPACE III - ISPRS/EARSeL Workshop on “Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters” 2:30-5:30 pm, 22 July 1999, VIC Room B Vienna, Austria NATURAL DISASTERS REMOTE SENSING CAPABILITIES AND APPLICATIONS IN A WIDE CONTEXT P. Gudmandsen Technical University of Denmark DK-2800 Lyngby KEY WORDS: Natural disasters, remote sensing, visual/infrared systems, active microwaves, passive microwaves, flood monitoring system. ABSTRACT A review is presented of remote sensing techniques that have proved useful for monitoring natural disasters. It includes visual and in frared systems, active microwave systems such as SLAR, SAR and InSAR and passive microw r ave radiometer systems applied from aircraft and satellite. The capabilities of these systems are considered as well as their limitations in tire context of monitoring various natural disasters: floods, landslides, oil spills on the ocean, forest fires and desertification. Availability of data from aircraft and satel lite for these purposes is considered. Thoughts are presented as to an integrated system for flood management including various aspects related to responsible authorities that might take advantage of remote sensing techniques. INTRODUCTION This paper presents considerations as to the application of re mote sensing data from aircraft and satellite to assist authorities (end users) responsible for management of natural disasters. In this context remote sensing is regarded a tool which has a num ber of capabilities but also some limitations. The paper gives a review of these - perhaps with emphasis of the limitations in order not to be accused of over-selling the techniques (which has happened so often before). However, at the outset, it shall be stated clearly that remote sensing is a useful tool as lias been demonstrated in many papers and workshops and conference presentations describing cases of natural disasters. The paper deals first with the commonalties i.e. operational as pects of aircraft and satellite systems, followed by cliapters on sensors wliich have proven useful for monitoring natural disas ters with emphasis on microwave systems. In tliis connection applications of data for different categories of disasters are dis cussed. Since tliis paper is followed by a number of presentations of applications I have refrained from including images describing the points raised. DATA ACQUISITION In all cases of natural disasters timely availability of data is a must and will in most cases involve remote sensing data. There are two ways of acquisition - by aircraft and satellite - which I shall consider briefly in the subsequent sections. Aircraft data Aircraft carrying suitable sensors and instruments have proved very' useful in the past and is in some cases the only useful proposition due to the fine spatial resolution that may be ob tained from the relative low altitude. The aircraft may be directed to the disaster areas with great position accuracy due to modem navigation techniques. Timely availability of data to responsible authorities is, however dependent upon a number of pre-requisites such as (a) availability of a dedicated aircraft equipped for the pur pose, that may be operational by a well-trained crew at short notice (b) a suitable means of recording the data acquired so that they' may be easily introduced into the analysis system of the end user - a geographical information system, for instance - that has been implemented for the purpose (c) a way of transferring data to the analysis centre eventually by aircraft-to-ground communications to reduce delay. A trade-off between the processing onboard and on the ground has to be found. It might be of advantage to have the data trans ferred in a final format that includes acquired navigation data. (d) flight tracks may be designed so that parameters such as an gle of incidence and view angle may be varied over the area which is useful for the data analysis. It shall be recalled that an aircraft may not be operational under International Archives of Photogrammetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE III, Vienna. 1999 85

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