Caitlin Dempsey

Caitlin Dempsey is the editor of Geography Realm and holds a master's degree in Geography from UCLA as well as a Master of Library and Information Science (MLIS) from SJSU.

First Satellite Images from Sentinel-1A

Caitlin Dempsey

Launched on April 3 and reaching operational altitude on April 11, the first images captured by the European Space Agency’s ...

Call for Translators: gvSIG

Caitlin Dempsey

The developers of open source GIS software gvSIG have issued a call for translators. gvSIG is a freely downloadable GIS ...

Maps Show How Tech Bus Stops Are Affecting San Francisco Evictions

Caitlin Dempsey

The Anti-Eviction Mapping Project has plotted out the incidences of “no-fault” evictions in San Francisco against shuttle stops for technical workers.  Many ...

Join the Crowdsourced Effort to Search for the Missing Malaysian Airlines Flight

Caitlin Dempsey

Malaysian Airlines flight 370 disappeared on Saturday, March 8, 2014.  The flight left Kuala Lumpur in Malaysia on March 8 ...

Aquatic Dead Zones

Caitlin Dempsey

Aquatic dead zones are bodies of water where the oxygen conditions are so low that marine life is unable to be supported.  

Satellite Imagery Maps Out How Bad the California Drought Really is in 2014

Caitlin Dempsey

California has been suffering from historical drought conditions.  Almost all of California is experiencing drought conditions.  Many parts of California ...

Roger Tomlinson, 1967.

Sunday Maptinee: Data for Decisions

Caitlin Dempsey

In honor of Roger Tomlinson (1933-2014), who recently died, this edition of Sunday Maptinee features Data for Decisions, a video ...

Tracking Whales with Satellite Imagery

Caitlin Dempsey

Researchers with the British Antarctic Survey have developed a methodology to use unsupervised classification to remotely identify and count right whale populations using Very High Resolution (VHR) satellite imagery.

GIS Timeline

Caitlin Dempsey

GIS timeline of significant milestones that have occurred since the early 1960s to advance GIS and geospatial technologies. GIS has come a long way since its beginnings.

Roger Tomlinson, Father of GIS, Has Died

Caitlin Dempsey

Roger Tomlinson was a central figure in the development of GIS.

Submarine Cable Map

Caitlin Dempsey

TeleGeography's 2014 Submarine Cable Map displays 285 existing or upcoming global cable systems by 2015.

A detailed graphic showing the location of the Earth's crust, mantle, and core.

Structure of the Earth

Caitlin Dempsey

Listed here are quick facts about the earth's crust, mantle, and core.

Using Speed Data to Track the Movements of Vehicles

Caitlin Dempsey

Researchers from Rutgers University have been testing out the theory that speed information matched against road topology provides enough information ...

How to Make Fantasy Maps

Caitlin Dempsey

Interested in learning how to make fantasy maps? This five part tutorial from Jessica Khoury teaches users how to use Photoshop to make fantasy maps.

Mapping Ship Logs

Caitlin Dempsey

Ben Schmidt, who is an assistant professor of history at Northeastern University, has mapped out historical shipping routes.

The movement of Earth's north magnetic pole across the Canadian Arctic. Red circles are observed magnetic pole positions, blue circles are modeled positions. Figure: Cavit, WikiMedia Commons, CC BY 4.0

Magnetic North is Constantly Shifting

Caitlin Dempsey

The magnetic poles shift each year due to changes in the Earth’s core in response to charge particles emitted by the sun hitting the earth’s magnetic field.

How to Find a Top Geography Degree Program

Caitlin Dempsey

Learn about the different rankings for geography undergraduate and graduate degree programs and where to find resources to help you pick the best geography program.

Sunday Maptinee: The Mapmaking Process (1973)

Caitlin Dempsey

In 1973, the United States Army produced training film TF5-4523 entitled, “The Mapmaking Process” which it described as explaining the “theory of ...

Earth Wind Map

Caitlin Dempsey

Last year, Fernanda Viégas and Martin Wattenberg of the site Hint.FM pulled near real-time data from the National Digital Forecast Database, to ...

Map showing probabilities of a white Christmas. Source: NOAA, 2001.

Christmas Maps and GIS

Caitlin Dempsey

Explore some fun Christmas related maps and GIS technology.

Tips for Using the Field Calculator in ArcGIS

Caitlin Dempsey

The field calculator in ArcGIS is a great tool for manipulating the contents of both numerical and string fields in ArcMap. Listed here are some tips and resources for using the field calculator in ArcGIS with Python and VBScript.

A map on a black background showing Big Foot Sightings across the United States from 2013. Sighting locations are a light purple highlighted color.

Mapping 92 Years of Bigfoot Sightings

Caitlin Dempsey

Joshua Stevens has mapped out the location of Big Foot sightings in the United States.

Mapping All the Swimming Pools in Los Angeles

Caitlin Dempsey

Los Angeles is known for its nearly constant sunshine and warm climate so it’s no surprise that the region contains ...

Six Interesting Maps of 2013 (and One Graphic)

Caitlin Dempsey

Everyone loves a great map.  Maps engage readers and help them discover something they wouldn’t otherwise have learned about the ...

Visualizing American Migration Without a Map

Caitlin Dempsey

As a cartographer, the display of spatial information is of great interest to me.  I’ve been particularly intrigued by analysts ...

Anita Graser | Profiles from the Geospatial Community

Caitlin Dempsey

Anita Graser, a prominent figure in open source GIS, authored "Learning QGIS 2.0". She shares insights on her GIS journey and the future trends in open source GIS.