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.
A satellite image showing snow, blue ice, and rocks in Antarctica.

Why are Most Meteorites Found in Antarctica?

Caitlin Dempsey

More meteorites have been found in Antarctica than all other continents combined. Why is that?

A satellite image showing the location of a bridge between Sweden and Denmark across dark blue water with an island in the middle of the strait.

Europe’s Longest Road and Railway Bridge

Caitlin Dempsey

The Øresund Bridge connects Denmark and Sweden, spanning the Øresund Strait with a 16-kilometer-long bridge-tunnel.

A shaded relief map of the contiguous United Stated with medium grey lines showing UTM zones.

Universal Transverse Mercator (UTM) Coordinate System

Caitlin Dempsey

UTM is a precise, grid-based coordinate system ideal for regional mapping and navigation, utilizing 60 zones to minimize distortion.

Screenshot showing the mapping of the real-time location of the International Space Station.

Real-time Satellite Tracking

Caitlin Dempsey

N2YO.com is an online service that offers satellite tracking and information in real-time.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image of the Caspian Sea on June 4, 2010

What is a Closed Lake?

Caitlin Dempsey

Closed lakes are bodies of water that do not drain into an ocean or river.

Laptop with QGIS, a desktop GIS software program

GIS 101: Learn About GIS

Caitlin Dempsey

This GIS 101 page is the launch page for accessing information about GIS and geospatial technologies on GIS Lounge.

19th century panoramic map of St. Louis.

Type of Map Perspective: Bird’s Eye

Caitlin Dempsey

Bird's-eye maps are created from an elevated perspective, showing an area as seen from above.

A to Z Geography: Alabama

Caitlin Dempsey

Here is an alphabetical list of words that relate to Alabama and its geography.

A bee looking for pollen inside the flower of a lavender plant.

Geography of Bees

Caitlin Dempsey

Bees, crucial pollinators, inhabit every continent except Antarctica. With over 20,000 species, they face threats from climate change and habitat loss.

Fog settles over a forest.

Wonderful Words to Describe How We Experience Geography

Caitlin Dempsey

There are some unique words to describe some of how we experience the world around us.

Women in GIS Networking Groups

Caitlin Dempsey

Web sites with information specifically regarding peer support for women in GIS.

A satellite image with labels for places over Mexico and Texas showing a dust storm.

Haboobs in the United States

Caitlin Dempsey

Haboobs, also known as convectively-driven dust storms, are intense, large-scale dust storms that occur in arid regions in the United States.

A view of Mauna Loa from Mauna Kea. Photo: USGS, public domain.

Geography Facts About the World’s Largest Active Volcano

Caitlin Dempsey

Hawaii's Mauna Loa is the world's largest subaerial volcano as well as the world's largest active volcano.

A satellite image showing snow covering areas of Ohio, Pennsylvania, and New York just south of Lake Erie.

Lake Effect Snow

Caitlin Dempsey

Lake effect snow can occur when dry, cold air moves across a vast lake with warm waters, resulting in a snowfall event.

Two images showing the front and back of a map rolled out from a walking cane with a silver handle.

Walking Cane Maps

Caitlin Dempsey

Walking cane maps, first created in 1893, featured retractable maps in cane handles. These souvenirs combined practicality with novelty.

A black and white photo showing a park range, a white man in a white shirt, and a young girl wearing light color top and shorts in front of mountains and a prairie.

Triple Divides in the United States

Caitlin Dempsey

A triple divide is a point on Earth where water from that location can potentially travel into three different watersheds.

A map of the United States with the location of dams shown as small orange circles. The surrounding ocean is light blue.

Dams in the United States

Caitlin Dempsey

There are dams in all 50 U.S. states and over 91,000 dams in all.

A map from the 16th century showing Mexico around the Gulf of Mexico.

The Map Myth of Bermeja Island

Caitlin Dempsey

For hundreds of years, cartographers mapped Bermeja Island off the coast of Mexico, but no evidence has been found to prove its existence.

A cropped view of a map with a north arrow in bold black with the letter "N" on top of it. A section of Texas and Louisiana can be seen at the top of the image.

Should Maps Include a North Arrow? Exploring the Debate

Caitlin Dempsey

Do all maps need a north arrow?

Shaded relief map of the Florida and Central America area showing gulfs and seas.

Geography Definitions Related to Water

Caitlin Dempsey

Listed here are geography terms related to water bodies such as lakes, rivers, and oceans.

Open Source GIS and Freeware GIS Applications

Caitlin Dempsey

There are many open source GIS and web mapping applications to choose from.

Map of GIS Job Listings in the US

Heat Maps in GIS

Caitlin Dempsey

Heat mapping, from a GIS perspective, is a method of showing the geographic clustering of a phenomenon.

What is the Difference Between GIS and Geospatial?

Caitlin Dempsey

There are differences in what the terms GIS and geospatial mean.

Free GIS Books

Caitlin Dempsey

Most of these free GIS books are available in downloadable PDF format and can be read from a computer or on an eBook reader.  

Map showing the six New England states in red and the red of the states in grey for the continental United States.

Which States are Part of New England?

Caitlin Dempsey

New England is a geographic region in the northeastern tip of the United States that contains six states.

The Map Myth of Here Be Dragons: The Facts and Fictions of Mapmakers

Caitlin Dempsey

What lies at the edge of the known world? Cartographers over the ages have used different ways of showing the unknown.