Saturday, October 18, 2008

Continuously Variable Proportional Circle Map


This is a continuously variable proportional circle map. Each circle depicts data. The size of the circle is dependent on the range of data given.

URL: http://www.nature.com/nature/journal/v451/n7181/images/nature06536-f2.2.jpg

DOQQ



DOQQ or digital orthophoto quarter quadrangles maps are aerial photographs used by the USGS to map small sections of a quadrangle.
URL: http://www.crwr.utexas.edu/gis/gishydro00/Class/trmproj/Donnelly/termproject_files/1_Red_DOQQ.jpe

DEM


This is an example of a DEM or Digital Elevation Map. Digital elevation maps give a 3D view of the landscape.
URL: http://www.digiwis.com/mr3img/mr3d5.jpg

DLG Maps


DLG or digital line graphics are data that can be layered on a map giving locations of states, counties, parks, rivers and lakes. This particular elevation map of the United States is overlain with DLG from the USGS.

URL: http://weather.unisys.com/usgs/3sec/usgs-US.gif

DRG Maps


DRG or Digital Raster Graphics are used to collect, review and revise digital data. This DRG map of a portion of Texas is being used as a layer on GIS software.

URL: http://www.tceq.state.tx.us/assets/public/gis/images/drg.gif

Isopleth


This is an isopleth map depicting the amount of acid (pH) in rainfall across the United States.
URL: http://dwb.unl.edu/Teacher/NSF/C14/C14Links/nadp.sws.uiuc.edu/isopleths/maps1998/phfield.gif

Isopach


This is an example of an Isopach map. Isopach maps depict rock or sediment thickness. This particular map is of the Gulf of Mexico and the distribution of Anhydrite beds on the Gulf floor.
URL: http://www.gomr.mms.gov/images_opt/techpap/gp-9509/andy_a.gif

Isohyets


This is an example of an Isohyet map. Isohyet maps measure rainfall. This particular map shows rainfall amounts over Hong Kong.
URL: http://images.google.com/imgres?imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjl5wZGXIVITl1Yac9-LnvcKB-8jS_M9BRlSJlF6X2tcyKzYqMQyzvuXPmk0MuYNER6J1qKlClWxfF9ZrfcOQnvp5iD2pdp3AILsGnF7P7Glsf4eaDO9e1Szntdr4WSyWPv4TAJYynC8ck/s400/08_06+hong+kong+rainfall+annotated.png&imgrefurl=http://daveslandslideblog.blogspot.com/2008/06/debris-flow-video-from-hong-kong.html&h=400&w=396&sz=183&hl=en&start=7&usg=__qQks77Rcuk3cutEWPMIKia2YBPE=&tbnid=hxC50k9TtWzF_M:&tbnh=124&tbnw=123&prev=/images%3Fq%3Disohyets%2Bmap%26gbv%3D2%26hl%3Den%26sa%3DG

Isotachs


This is an example of an isotach map of the United States. Isotachs measure wind speed and direction.
URL: http://www.rap.ucar.edu/weather/model/eta00hr_300_wnd.gif

Isobars


This is a map displaying isobars. Isobar maps are a type of contour map that shows air pressure.
URL: http://www.met.ie/weathermaps/atl-iso-tom.gif

Remote Sensing Homework


This is an example of Radar. More specifically, Doppler Radar. In this image we are viewing cloud cover over the South Pacific.

URL:
agora.ex.nii.ac.jp/.../kml/globe/latest/1.jpg

Friday, October 3, 2008

LIDAR


LIDAR stands for light detection and ranging. This LIDAR image is of Manhattan. It was used to determine the height of the debris from the World Trade Center collapse on 9/11/01. This image also assisted ground crews in determining what size cranes were needed for recovery and cleanup.
URL:
http://www.noaanews.noaa.gov/stories/images/manhattan-lidar092701.jpg

Doppler Radar


Storm tracking is one of the many uses of doppler radar. Doppler radar in weather uses echoes to determine the velocity of the clouds or storms. This particular doppler radar shows a severe thunderstorm, complete with a tornado hook (depicting a possible tornado) in the Texas panhandle.
URL:
http://images.google.com/imgres?imgurl=http://www.wunderground.com/hurricane/2007/enterprise_anim.gif&imgrefurl=http://www.wunderground.com/blog/JeffMasters/archive.html%3Ftstamp%3D200703&h=480&w=480&sz=557&hl=en&start=32&um=1&usg=__oXV79F6GX9BzeJct9PLhUN_bbUA=&tbnid=3OsnE1vtHWW8cM:&tbnh=129&tbnw=129&prev=/images%3Fq%3DDoppler%2Bradar%26start%3D20%26ndsp%3D20%26um%3D1%26hl%3Den%26sa%3DN

Black and White Aerial Photo


Black and white aerial photos are used because they can show greater detail than color photographs.
URL: http://freegeographytools.com/wp-content/uploads/2007/09/doq-thumb

Infrared Aerial Photo


This is an infrared aerial photo of the Everglades in Florida. This photo was used to study different the environmental impact on several species of trees within the Everglades.
URL:
http://sofia.usgs.gov/publications/fs/2004-3016/images/fig3x.jpg

Cartographic Animation


A cartographic animation is a map that shows some type of motion usually to depict a change. This particular cartographic animation is very familiar to those of us on the Gulf Coast. This is a satellite image of Hurricane Katrina from September, 2005.
URL:http://www.spc.noaa.gov/misc/carbin/katrina/kat5_1945.gif

Statistical Map


Statistical maps represent statistics whether it is a percentage, ratio, rate or other statistical data. This particular statistical map shows the growth rate of internet use in Africa in the mid 1990's.
URL:
http://personalpages.manchester.ac.uk/staff/m.dodge/cybergeography/atlas/mids_af_i_gr_c_large.gif

Cartogram


A cartogram uses the value of a variable to depict size, rather than using the actual geographic shape and area. This cartogram shows the number of plant species by country.
URL:
http://freegeographytools.com/wp-content/uploads/2007/09/271c-thumb.png

Flow Map


This is an example of a basic flow map which allows you to follow the steps in order to make a peanut butter sandwich. These types of flow maps or process maps are used throughout the business community to find pieces of processes that can be improved or deleted.
URL:
http://www.nhcs.k12.nc.us/htree/Curriculum/ThinkingMaps/FlowMap.jpg

Isoline Maps


This is an isoline map of the island of Maui in Hawaii. The contour lines on this map depict the average amount of rainfall per year in Maui. The areas in which the lines are close together show the areas of the most rainfall. The is less rainfall where the lines begin to spread out.
URL:
http://www.esri.com/news/arcwatch/0207/graphics/feature1-lg.jpg

Proportional Circle Map



This proportional circle map depicts the population within each state capitol. The larger the circle, the larger the population. Proportional circle maps use data as a variable to determine the size of the circle represented on the map.

URL:
http://images.google.com/imgres?imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiESCx7pHzJufJShQoYkr41FFQJATJMGS2n61LQSJob2_bageHzW0wfhr6YGDKkGE5Whako5SFPd5ylfahP6fR9jQ-Ag9RGNSsRlKboQOLnYcBT6qsKF89alDAqpovYEyrOba8ITQA9QTk/s400/Bad_Circle1.jpg&imgrefurl=http://ahunsberger.blogspot.com/2007_10_01_archive.html&h=276&w=400&sz=24&hl=en&start=14&usg=__vWEIscDFb7uT817q7PS6a5EHgfM=&tbnid=ql5VduTmOdMjHM:&tbnh=86&tbnw=124&prev=/images%3Fq%3Dproportional%2Bcircle%2Bmaps%26hl%3Den%26sa%3DG

Choropleth Map



This choropleth map shows the percentage of Hispanic and Latino people per county in Florida taken from the 2000 census. The various shades of green, light to dark, are used to identify the areas of smallest to largest population of Hispanic and Latino people. Choropleth maps are used to show an areal representation of specific data.

URL:
http://www.ilstu.edu/~jrcarter/Geo204/Choro/Tom/hispanic_race_fl-H1_FINAL.gif