Landsat-7 Enhanced Thematic Mapper Plus Radiometric Calibration

Markham, Brian L.; Boncyk, W.C.; Helder, Dennis L.; Barker, J. L.

doi:10.1080/07038992.1997.10855218

Cited by 39 publications

(12 citation statements)

References 6 publications

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“…The FASC is a diffuser panel mounted outside the entrance aperture of ETM+ and is operated approximately monthly to reflect the rising Sun onto the focal plane. Using prelaunch data combined with on-orbit solar view geometry, the FASC can facilitate the absolute calibration of the ETM+ (Markham et al, 1997). One of the requirements of the L7 mission is to achieve radiometric calibration accuracy of the ETM+ data within an uncertainty of less than 5% in at-sensor radiance.…”

Section: Landsat 7 (L7) Enhanced Thematic Mapper Plus (Etm+)mentioning

confidence: 99%

Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites

Chander

Xiong

Choi

et al. 2010

Remote Sensing of Environment

121

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Section: Landsat 7 (L7) Enhanced Thematic Mapper Plus (Etm+)mentioning

confidence: 99%

Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites

Chander

Xiong

Choi

et al. 2010

Remote Sensing of Environment

121

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“…We used the spectral radiance and texture on a red‐green‐blue (RGB) color combination of optical images to map lithological units. This approach was based on the use of Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ Kahle et al , 1991] and Landsat 7 [ Markham et al , 1997] images with a spatial resolution of 15 and 30 m, respectively. We controlled the lithology in the field.…”

Section: Remnant Terraces Of the Neuquén Rivermentioning

confidence: 99%

Geomorphic evidence for Plio-Quaternary compression in the Andean foothills of the southern Neuquén Basin, Argentina

et al. 2010

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The southern central Andes foothills are made of imbricate thick‐ and thin‐skinned fold and thrust belts. They were formed during Cretaceous and Miocene compressive periods by successive eastward propagation episodes of the orogenic front. We analyze remnant terraces and alluvial deposits of the Neuquén River and its tributaries to study the Plio‐Quaternary tectonic regime in the southern Neuquén Basin. Topographic profiles of remnant terraces show a crustal‐scale (tens of kilometers) anomaly above the Chihuido South anticline. This anomaly is accompanied by sedimentary aggradations downstream and upstream of the anticline. Another anomaly in the terrace profiles, correlated with a knickpoint in the current Neuquén River, is observed farther east, near Añelo. We interpret these anomalies to be the consequence of a Plio‐Quaternary uplift of the Chihuidos and Añelo anticlines. Folding and surface faulting of Plio‐Quaternary alluvial deposits show that this uplift is concomitant with the reactivation of the Miocene orogenic front and of the predominantly thin‐skinned Agrio fold‐and‐thrust belt. From these data we infer that the southern Neuquén Basin is still shortening under a compressive stress regime and that the Andean orogenic front is migrating farther to the east. Extensional features in the study area correspond mainly to thin‐skinned gravitational gliding, resulting from crustal uplift. Thus, we argue that the tectonic compressive regime is preserved in the southern Neuquén Basin throughout the Plio‐Quaternary, though the slab may have steepened during this period.

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“…The ETMplus has six reflective bands located in the visible and shortwave infrared (SWIR) spectrum with a spatial resolution of 30 m. The ETMplus sensor is based on the Thematic Mapper (TM) sensors onboard Landsat 4 and Landsat 5. Changes to the ETMplus sensor include a new panchromatic band, an increase in the spatial resolution of the thermal band to 60 m compared to 120 m in TM, and the addition of two calibration devices to monitor on-orbit sensor changes (Markham et al, 1997).…”

Section: Methodsmentioning

confidence: 99%

Nature vs. Culture: present-day spatial distribution and preservation of open-air rock art in the Côa and Douro River Valleys (Portugal)

Aubry¹,

Luís²,

Dimuccio³

2012

Journal of Archaeological Science

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Open-air rock art preservation Landsat imagery Pair-wise comparison matrix Frequency-probabilistic procedure Predictive model a b s t r a c t Late-glacial and Iron-Age open-air rock art of the Côa River Valley shows a similar spatial distribution, with several clusters along the Côa and Douro River tributaries that are mostly exposed to the southeast. In this report, we try to determine whether the artists of both periods deliberately chose the same natural panels for rock art or its present-day spatial distribution is imposed by formation and weathering processes, previous or subsequent to the engraving. Geological structural analysis, from regional to field scales, shows a NNE-SSW sinistral strike-slip fault system that crosses the study area, together with a set of fracture/joints with the same orientation and formed by the same tectonic stress. Direct field measurement and the description of 713 natural panels, engraved and un-engraved, reveal that the preserved rock art panels correspond to the most common tectonic fracture/joint systems (NNE-SSW) of the study area. Locally, the hydrographic network is conditioned by the same structural control. Differential weathering exists between the panels exposed on opposite margins of watercourses, with preferential degradation of the rock art panel surfaces exposed to the NW. We propose that, on the scale of the valley, the surface weathering of the rock art panels results from differential solar radiation, humidity, lichen and bryophyte colonisations. Interpretation of field observations, a frequencyprobabilistic procedure, pair-wise comparison matrix and geographic information system analysis were combined to evaluate a Côa panel formation and preservation predictive model using archaeological, topographical and hydrological data. Four variables were extracted and weighted from the collected data, including topographic slope and aspect, solar radiation and cost-weighted distance to watercourses, which were used as environmental input data. The archaeological input data (rock art occurrences) were used to calculate the variable ratings and to evaluate both the Côa panel formation and preservation predictive model and external validation maps, with the results showing an agreement of 80% and 70%, respectively. Field verification revealed unknown rock art panels in areas with high and very high values. The Côa panel formation and preservation predictive model provides a useful framework to guide survey and heritage management.

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Landsat-7 Enhanced Thematic Mapper Plus Radiometric Calibration

Cited by 39 publications

References 6 publications

Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites

Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites

Geomorphic evidence for Plio-Quaternary compression in the Andean foothills of the southern Neuquén Basin, Argentina

Nature vs. Culture: present-day spatial distribution and preservation of open-air rock art in the Côa and Douro River Valleys (Portugal)

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