trodd_multifaceted_remote_sensin
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Transcript trodd_multifaceted_remote_sensin
Earth Observation by Remote
Sensing
Dr Nigel Trodd
Coventry University
Aim… to understand
the role of remote sensing in Earth
observation
& objectives… by
identifying & exemplifying
characteristics of remote sensing
evaluating strengths & weaknesses
using case studies of applied remote
sensing
What is remote sensing?
…the acquisition of physical data of an
object without touch or contact (Lintz & Simonett
1976)
What is Earth observation by
remote sensing?
…the science and technology to derive
information about the Earth’s land, sea, ice
& atmosphere using electromagnetic
radiation reflected or emitted from an object
or phenomena
Earth observation by remote sensing
Unique selling point: 1
Area of coverage
Unique selling point: 2
Area of coverage
Repetition of
measurement
Unique selling point: 3
Area of coverage
Repetition of
measurement
Imaging the
inaccessible
Unique selling point: 4
Area of coverage
Repetition of
measurement
Imaging the
inaccessible
Viewing the
invisible
Unique selling point: 5
3D
Unique selling point: 5
Area of coverage
Repetition of
measurement
Imaging the
inaccessible
Viewing the
invisible
Digitalselling point:
Unique
Digital
6
Where in
the world?
Same country,
which city?
Remote sensing:
a unique perspective
Area of coverage
Repetition of
measurement
Imaging the
inaccessible
Viewing the
invisible
3D
Digital
multiscale
multitemporal
multi…
multispectral
multidimensional
multipurpose
Case study: Yangtze delta
ENVISAT MERIS 2005
Case study: Yangtze delta
Natural fluctuations
Landsat MSS 1979
Landsat TM 1993
Agricultural expansion
Industrial development
Case study: Mozambique
Inundation of coastal floodplain 99/00 and 00/01
associated with ENSO events
SRTM DEM Mozambique
Validating theories of biogeomorphology
Case study: Grand Canyon
Conclusion
Earth observation by remote sensing
is a multifaceted technique
Case studies demonstrate that
remote sensing is an attractive tool
to characterise terrain and quantify
geomorphic processes & landscape
dynamics