1. (a) In your own words, summarize the approach used by McHenry and Dunlap (The
ID: 295766 • Letter: 1
Question
1. (a) In your own words, summarize the approach used by McHenry and Dunlap (The subglacial imprint of the last Newfoundland Ice Sheet, Canada; 2016) in the construction of the glacial history for Newfoundland. (b) How can the regional approach be effectively connected with detailed site investigations of striations and fabric analysis? 1. (a) In your own words, summarize the approach used by McHenry and Dunlap (The subglacial imprint of the last Newfoundland Ice Sheet, Canada; 2016) in the construction of the glacial history for Newfoundland. (b) How can the regional approach be effectively connected with detailed site investigations of striations and fabric analysis? (b) How can the regional approach be effectively connected with detailed site investigations of striations and fabric analysis?Explanation / Answer
1) SUMMARY IN OWN WORDS MAY VARY FROM PERSON TO PERSON.
a) Summary of the approach used are as follows-
The main map was compiled using a systematic province wide mapping programm based on the visual interpretation of the satellite imaginary and by the virtue of the DEMs, with the mapping being completed by one observer to reduce the observer variabilty. four different types of the subglaciers were identified and mapped. these were either streamlined in the direction of theice flow and include the glacial depositionals.
in order to improve the landform detections and to avoid the known problem of the azimuth biasis various shaded renditions of the DEMs include the non azuimuth images were consuslted during the mapping process.
a vertical exagrrations of the 3x and 5x was used for the all shaded relief with the exceptions of zero azimuthenditions with the solar elevations being set at 30 degree . it is because to the fact that at the lower angle of the elevation of the solar effective for aiding the landform detectability..
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b) The main map build upon the previous landform mapping in the region by being the first map that document the spatial distributions of the individuality mapped subglaciers bedforms across the entitre land of the newfoundland.it often a new record of the almost 127000individual subglaciers landforms and is comprehensive new landform database that build upon the previous landform research in the region. in this way this approach of regional will be effective in the site investigation of the striations and the fabric analysis.
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