Table 1. Bivariate Matrix of Scale Factors and
Cultural Resources Remote Sensing Tasks.
Tasks
A
B
C
D
E
F
Scale
Ultra-large
1:1000
1
2
3
3
3
2
Large
1:5000
2
1
1
2
3
1
Medium
1:25,000
3
3
2
2
1
]
Small
1:50,000
3
3
2
2
1
2
Ultra-samll
1:500,000
3
3
2
2
1
3
Task Key: A=Site element survey/analysis
B=Site plan survey
C=Landscape survey, site detection
D=Spatial analysis, sub-regional survey
E=Regional geographic information
F=Management of cultural resources
Applicability Key: l=High
2=Moderate
3=Low or None
Six major tasks in cultural resources remote sensing
may be identified as follows, and virtually all
(except f.) result in plans or maps as direct output.
a) Site element survey and analysis: Use of ground-
based platforms, low altitude photography from ba-
loons, kites, miniature drones, and helicopters
almost exclusively photographic and frequently in
volving photogrammetric assessments. Interest is
focused specific feature, i.e. structures, monuments
and habitation areas.
b) Site plan survey and internal organization: Low
altitude aerial photography from aircraft, helicop
ters and baloons often involving photogrammetric
interest. Micro-topography, dimensions, plan and
arrangement of whole settlements, internal charac
teristics (i.e. style) and functional organization
are interest foci. Detection of small cultural fea
tures such as grave sites and markings, house foun
dations and pathways.
c) Landscape surveys, site detection and survey:
Aerial photography and multispectral scanning from
aircraft. Multispectral video systems are emerging
to greatly reduce turn-around times for data analysis
with both digital and analog data. Terrain characte
ristics involving geomorphology, soils, vegetation,
land use and cultural elements (i.e. roads, canals,
moats, agricultural field patterning, etc.) in rela
tion to abandoned settlements and their immediate
surroundings are major topics. Detection, identifi
cation and mapping of new or potential cultural
resources of major importance. Delineation of histo
ric districts.
d) Spatial analysis and sub-regional survey: High
altitude aerial photography and multispectral scan
ning as well as radar, including high resolution
satellite data. Investigation of environmental dis
tribution (including terrain characteristics from
above) pertinent to surveying cultural resource con
centrations, and as input to geographic information
system base. Spatial analysis of cultural resource
interrelationships, networks and survey of sub
regional patterns of diverse cultural resources.
e) Regional geographic information: Satellite
multispectral scanners, radar, and photography.
Investigation of terrain characteristics (as above)
and large-area environmental distributions showing
temporal variations that impact on cultural resources
(i.e. flooding, land use changes).
f) Management: Multiple remote sensor applications.
Planning processes, property delineation, natural
hazards assessment, monitoring forestry and agricul
tural practices, land use changes (i.e. urbanization),
riverbank/shoreline erosion, intervention of other
resource developments as for example, reservoir and
highway construction, archeaological plundering and
malicious destruction, and pollution effects.
Table 1 does not address the details of methodolo
gical problems characteristic of this area of remote
sensing applications. These have been variously
covered by other authors, such as Ebert (1984), Nor-
mann (1985), and Vogt (1974)and more and are beyond
the scope of this paper. The table presents a sample
of the kinds of tasks that characterize cultural
remote sensing and a subjective, albeit necessary
scalar classification.
Also, an "applicability rating" is shown which is
based on both field and literature survey. It becomes
readily apparent that the most applicable scales for
cultural resources tasks are the large and meso-scales,
which encompasses the range where aerial photography
reigns while the extreme scales are more specialized
in their application although this does not diminish
their value in providing meaningful data for use in
the overall scheme of things.
A voluminous inventory of imagery already exists at
the most applicable scales with virtually every area
of potential cultural resource significance covered,
and in some cases multiple coverages embracing a time
scale of some five or six decades. The archives at
satellite scales are also burgeoning with data, but
all in all, there is still disparity in both quantity
and quality in the availability of the most applicable
scales between the developed and the developing world,
while it is encouraging to note that satellite cove
rage is available the world over, although there are
severe local problems in quality. These disparities
result in numerous difficulties in the methodological
reaim requiring investigations to shift to more costly
and less efficient means of survey.
Few investigators have the opportunity to acquire
dedicated large scale coverages and must resort to
available imagery acquired for some other purpose.
However, the vast archives of historic, semi-recent
and recent large and meso-scale coverages in the
storage boxes of various agencies around the world
are potentially of considerable value and deserve
attention. Also, the ingenuity of investigators should
not be underestimated as cheaper alternatives to con
tract aerial photo acquisition have recently been
shown in the popular and professional literature,
such as tethered baloon (Myers and Myers, 1985),
drone-model airplane and kite. (Normann, 1985, Holm
and Stridsberg, 1985) .
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3 MANAGEMENT AND REMOTE SENSING
Lipe (1984:2) defines the philosophical basis for
cultural resource management as follows: 'all cultural
materials, including cultural landscapes, that have
survived from the past, are potentially cultural
resources-that is, have some potential value or use
in the present or future'. Management implies that a
rational policy exists based on detailed survey and
inventory of cultural resources. Cleere (1984), sum
marizing a range of World cultural resource manage
ment problems from a survey conducted in twelve coun
tries points to a need for aerial and ground survey
which should obviate hasty rescue operations. Another
problem area increasingly recognized by scholars is
the matter of context. Due to the long-standing and
still prevalent focus of archaeology on sites,
archaeologists fail to appreciate the more diffuse
cultural elements imprinted on the landscape at large
(Butzer, 1982), thus, the resource content of the
rural landscape can be overlooked. This site-oriented
focus is showing signs of changing largely through the
application of aerial survey methods and the emergence
of a more problem-oriented approach to studying the
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