STEPHEN GREBBY's Outputs (3)

Evaluating the use of an object-based approach to lithological mapping in vegetated terrain (2016)
Journal Article
Grebby, S., Field, E., & Tansey, K. (2016). Evaluating the use of an object-based approach to lithological mapping in vegetated terrain. Remote Sensing, 8(10), 1-20. https://doi.org/10.3390/rs8100843

Remote sensing-based approaches to lithological mapping are traditionally pixel-oriented, with classification performed on either a per-pixel or sub-pixel basis with complete disregard for contextual information about neighbouring pixels. However, in... Read More about Evaluating the use of an object-based approach to lithological mapping in vegetated terrain.

A machine learning approach to geochemical mapping (2016)
Journal Article
Kirkwood, C., Cave, M., Beamish, D., Grebby, S., & Ferreira, A. (2016). A machine learning approach to geochemical mapping. Journal of Geochemical Exploration, 167, https://doi.org/10.1016/j.gexplo.2016.05.003

Geochemical maps provide invaluable evidence to guide decisions on issues of mineral exploration, agriculture, and environmental health. However, the high cost of chemical analysis means that the ground sampling density will always be limited. Tradit... Read More about A machine learning approach to geochemical mapping.

Hydrothermal activity recorded in post Noachian-aged impact craters on Mars (2016)
Journal Article
Turner, S. M., Bridges, J. C., Grebby, S., & Ehlmann, B. L. (2016). Hydrothermal activity recorded in post Noachian-aged impact craters on Mars. Journal of Geophysical Research: Planets, 121(4), https://doi.org/10.1002/2015JE004989

Hydrothermal systems have previously been reported in ancient Noachian and Hesperian-aged craters on Mars using CRISM but not in Amazonian-aged impact craters. However, the nakhlite meteorites do provide evidence of Amazonian hydrothermal activity. T... Read More about Hydrothermal activity recorded in post Noachian-aged impact craters on Mars.