I spend a lot of time working with geospatial data, mostly from around Greenland. Maps are an great way of presenting these data; a well-considered map can convey a huge amount of information. A few examples are displayed below, some have been published in Quaternary Science Reviews (Dyke et al., 2014) and Scientific Reports (Dyke et al., 2017; Andresen et al., 2017).


Petermann Glacier, northern Greenland. LANDSAT 8 OLI imagery draped on the GIMP digital elevation model (Howat et al., 2014). 4x vertical exaggeration. Inset map shows extent of main figure (red box).



Seasonal changes at Sermilik Fjord, southeast Greenland. LANDSAT 8 OLI scenes from April and August 2016 draped on the GIMP digital elevation model (Howat et al., 2014). Inset map shows the extent of the main figure (red box).



Map of the North Atlantic region showing the major surface ocean currents (colour of arrows indicate temperature; red = warm, blue = cold, yellow = mixture). HG = Helheim Glacier; KG = Kangerdlugssuaq Glacier; JI = Jakobshavn Isbræ. Magenta circles show location of sediment cores discussed in the text. The magenta box delineates the extent of the inset map. Bathymetric data are from IBCAO v3 (Jakobsson et al., 2012). Terrestrial topographic data are from the ETOPO1 Global Relief model (Amante and Eakins, 2009) and the GIMP surface digital elevation model (Howat et al., 2014). The inset map of Sermilik Fjord shows the location of sediment core ER07 and the local bathymetry (Schjøth et al., 2012). Figure from Andresen et al. (2017).



Køge Bugt, southeast Greenland. LANDSAT 8 OLI imagery draped on the GIMP digital elevation model (Howat et al., 2014), bathymetric data are from Dyke et al. (2017). 4x vertical exaggeration. Inset map shows extent of main figure (red box). Figure prepared for Dyke et al. (2017), but not used in the final manuscript.



Geological map of Greenland, 1:14,000,000. Light colours denote ice covered bedrock. Adapted from Dawes (2009). Bathymetric data from IOC, IHO, and BODC (2003). Major settlements and important locations are labelled.



North Atlantic surface circulation, 1:18,000,000. Features adapted from Straneo et al. (2012) and references therein. East Greenland Coastal Current from Bacon et al. (2002). Bathymetric data from IBCAO v3 (Jakobsson et al., 2012).



Regional deglaciation chronology, SE Greenland. Constructional feature from Andrews et al. (1997). Black line shows Last Glacial Maximum (LGM) ice limit from Funder et al. (2011). Inset map and box show location of figure. Multi-hue colour scales calculated using Bézier interpolation and lightness correction (e.g. Harrower and Brewer, 2003). Figure from Dyke et al. (2014).



Fjord 10Be chronology. A: Bernstorffs Fjord. B: Kangerdlugssuaq Fjord. 10Be exposure ages are reported in thousands of years (ka) with internal uncertainties. Camera position and field of view (where relevant) for photographs are shown. Background imagery — pan-sharpened, false-colour Landsat ETM+ scenes (http://glovis.usgs.gov/). Figure from Dyke et al. (2014).



Data references

Amante, C. and Eakins, B. W. (2009). ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis. National Geophysical Data Center, NOAA, NESDIS NGDC-24.

Andrews, J. T., Smith, L. M., Preston, R., Cooper, T., and Jennings, A. E. (1997). Spatial and temporal patterns of iceberg rafting (IRD) along the East Greenland margin, ca. 68°N, over the last 14 cal. ka. Journal of Quaternary Science, 12 (1): 1–13.

Bacon, S., Reverdin, G., Rigor, I. G., and Snaith, H. M. (2002). A freshwater jet on the east Greenland shelf. Journal of Geophysical Research: (Oceans), 107 (C7): 1–16.

Dawes, P. R. (2009). The bedrock geology under the Inland Ice: the next major challenge for Greenland mapping. Geological Survey of Denmark and Greenland Bulletin, 17: 57–60.

Dyke, L. M., Andresen, C. S., Seidenkrantz, M.-S., Hughes, A. L. C., Hiemstra, J. F., Murray, T., Bjørk, A. A., Sutherland, D. A., Vermassen, F. (2017) Minimal Holocene retreat of large tidewater glaciers in Køge Bugt, southeast Greenland. Scientific Reports 7(12330): 1–10.

Dyke, L. M., Hughes, A. L. C., Murray, T., Hiemstra, J. F., Andresen, C. S., and Rodés, Á. (2014) Asynchronous deglaciation of large outlet glaciers in southeast Greenland. Quaternary Science Reviews 99: 244–259.

Funder, S. V., Kjeldsen, K. K., Kjær, K. H., and Ó Cofaigh, C. (2011). The Greenland Ice Sheet during the past 300,000 years: A review. In J. Ehlers, Gibbard P.L., and P.D. Hughes, editors, Development in Quaternary Sciences: Quaternary Glaciations - Extent and Chronology, 15. Elsevier, Amsterdam, 699–713.

Harrower, M. and Brewer, C. A. (2003). ColorBrewer.org: An Online Tool for Selecting Colour Schemes for Maps. The Cartographic Journal, 40 (1): 27–37.

Howat, I. M., Negrete, A., and Smith, B. E. (2014). The Greenland Ice Mapping Project (GIMP) land classification and surface elevation datasets. The Cryosphere, 8 (1): 1509–1518.

IOC, IHO, and BODC (2003). Centenary Edition of the GEBCO Digital Atlas. Intergovernmental Oceanographic Commission and the International Hydrographic Organization as part of the General Bathymetric Chart of the Oceans; British Oceanographic Data Centre, Liverpool.

Jakobsson, M., Mayer, L., Coakley, B., Dowdeswell, J. A., Forbes, S., Fridman, B., Hodnesdal, H., Noormets, R., Pedersen, R., Rebesco, M., Schenke, H. W., Zarayskaya, Y., Accettella, D., Armstrong, A., Anderson, R. M., Bienhoff, P., Camerlenghi, A., Church, I., Edwards, M., Gardner, J. V., Hall, J. K., Hell, B., Hestvik, O., Kristoffersen, Y., Marcussen, C., Mohammad, R., Mosher, D., Nghiem, S. V., Pedrosa, M. T., Travaglini, P. G., and Weatherall, P. (2012). The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 3.0. Geophysical Research Letters, 39 (L12609): 1–6.

Schjøth, F. and Andresen, C. S. and Straneo, F. and Murray, T. and Scharrer, K. and Korablev, A. (2012). Campaign to Map the Bathymetry of a Major Greenland Fjord. EOS, Transactions American Geophysical Union 93(14): 141–142. Figure published in Andresen et al., 2017.

Straneo, F., Sutherland, D. A., Holland, D., Gladish, C., Hamilton, G., Johnson, H., Rignot, E., Xu, Y., and Koppes, M. (2012). Characteristics of ocean waters reaching Greenland's glaciers. Annals of Glaciology, 53 (60): 202–210.


© Laurence Dyke (2017)