Yushin Ahn

Yushin Ahn

Contact

Assistant Professor, School of Technology

Advisor, Douglass Houghton Student Chapter of the Michigan Society of Professional Surveyors (MSPS)

  • PhD, Geodetic Science and Surveying, The Ohio State University
  • MS, Geodetic Science and Surveying, The Ohio State University
  • MS, Surveying and Digital Photogrammetry, Inha University, Korea
  • BEng, Civil Engineering, Inha University, Korea

Biography

Yushin Ahn is an assistant professor of surveying engineering as well as of the integrated geospatial technology graduate program in the School of Technology at Michigan Tech. His area of expertise is digital photogrammetry, digital mapping, sensor modeling/calibration, 3D reconstruction from remote sensing data, polar region monitoring and change detection.

Research Interests

  • Digital photogrammetry and mapping
  • Sensor modeling and calibration
  • Sensory data fusion
  • 3D reconstruction from remote sensing data
  • Glacier dynamics/polar region monitoring
  • Feature tracking (Image matching)

Teaching Interests

  • Surveying/Field practice/Computation
  • remote sensing data fusion
  • Digital image acquisition and processing
  • Adjustment computation
  • Digital Mapping

Recent Publications

  • MCNABB, RW, R. HOCK, S. O’NEEL, LA RASMUSSEN, Y. AHN, M. BRAUN, H. CONWAY et al. "Using surface velocities to calculate ice thickness and bed topography: a case study at Columbia Glacier, Alaska, USA." Journal of Glaciology 58, no. 212 (2012): 1151
  • Walter, J. I., J.E. Box, S. Tulaczyk, E. Brodsky, I. Howat, Y. Ahn, A. Brown, (2012), Oceanic mechanical forcing of the dynamics of a marine-terminating Greenland glacier by ice mélange removal and ocean tides, Annals of Glaciology, 53(60), doi: 10.3189/2012AoG60A083, pp 181-192
  • K.M. Walsh, I. M. Howat, Y. Ahn, E. M. Enderlin, (2011), Changes in the Marine-terminating glaciers of central east Greenland and potential connections to ocean circulation, 2000-2010, The Cryosphere Discuss., 5, 2865-2894, doi:10.5194/tcd-5-2865-2011
  • Howat, I. M., Y. Ahn, I. Joughin, M. R. van den Broeke, J. T. M. Lenaerts, and B. Smith. 2011. Mass balance of Greenland's three largest outlet glaciers, 2000–2010, Geophys. Res. Lett., 38, L12501, doi:10.1029/2011GL047565
  • Lee, H., C. Shum, I. Howat, A. Monaghan, Y. Ahn, J. Duan, J.-Y. Guo, C.-Y. Kuo, L. Wang, (2012), Continuously accelerating ice loss over Amundsen Sea catchment, West Antarctica, revealed by integrating altimetry and GRACE data, Earth and Planetary Science Letters, 321-322 (2012), 74-80
  • McFadden, E. M., I. M. Howat, I. Joughin, B. E. Smith, and Y. Ahn. 2011. Changes in the dynamics of marine terminating outlet glaciers in west Greenland, 2000–2009, J. Geophys. Res., 116, F02022, doi:10.1029/2010JF001757
  • Ahn, Y. and I. M. Howat. 2011. Efficient, Automated Glacier Surface Velocity Measurement from Repeat Images Using Multi-Image/Multi-Chip (MIMC) and Null Exclusion Feature Tracking, IEEE Trans. on Geoscience and Remote Sensing, 49(8), 2838-2846
  • Mernild, S. H., I. M. Howat, Y. Ahn, G. E. Liston, K. Steffen, B. H. Jakobsen, B. Hasholt, B. Fog, and D. van As. 2010. Freshwater flux to Sermilik Fjord, SE Greenland, The Cryosphere, 4, 467-474, doi:10.5194/tc-4-467-2010
  • Howat, I. M., J. E. Box, Y. Ahn, A. Herrington and E. M. McFadden. 2010. Seasonal variablity in the dynamics of marine-terminating outlet glaciers in Greenland, Journal of Glaciology, 56, 198, 601-613
  • Ahn, Y. and J. Box. 2010. Glacier velocities from time lapse photos: technique development and first results from the Extreme Ice Survey (EIS) in Greenland, Journal of Glaciology, Journal of glaciology, 56(198), pp 723-734
  • van der Veen, C. J., Y. Ahn, B. M. Csatho, E. Mosley-Thompson, and W. B. Krabill. 2009. Surface roughness over the northern half of the Greenland ice sheet from airborne laser altimetry, J. Geophys. Res., 114, F01001, doi:10.1029/2008JF001067

Recent Funding

  • REF Research Seed Grant, Michigan Tech, 2013-2014, Terrestrial Remote Sensing for 3D building model and interior mapping

Courses

  • SU2260 Surveying Computation
  • SU3110 Surveying Field Practice
  • SU3250 Geodetic Adjustment
  • SU3600 Surveying Computation and Adjustment
  • SU4180 Land Subdivision Design
  • SU4060 Geodesy
  • SU4996 Boundary Surveys
  • SU5045 Geospatial Data Fusion