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.

Satellite Imagery Shows How Much of South Dakota’s Flooded Fields Were Unable to be Farmed

Caitlin Dempsey

In August of 2019, the U.S. Department of Agriculture reported that South Dakota had 3.9 million โ€œprevented plantingโ€ acres.

Indonesia Will be Moving Its Capital

Caitlin Dempsey

Driven by congestion and the gradual sinking of Jakarta, Indonesia announced that it will be moving its capital to a location on the island of Borneo.

Map showing the ten zones that cover the contiguous United States with the UTM map projection.

How to Calculate the Boundaries of an UTM Zone

Caitlin Dempsey

A UTM coordinate system's eastern and western borders can be easily determined.

New Study Maps Out the Global Pattern of Soil-based Carbon Storage

Caitlin Dempsey

Researchers from the Crowther Labย recently published a study in Scienceย which reviewed existing research on soil communities and how climate change will accelerate the loss of carbon stored in the world's soil.

Caltrans Plans to Build the World’s Largest Wildlife Crossing in California

Caitlin Dempsey

With a proposed design spanning 200 feet (61 meters) across the 101 freeway, Caltrans in Southern California is moving along with plans to build the world's largest wildlife crossing and the first of its kind near a major city.

GIS Jokes

Caitlin Dempsey

Here are some corny GIS jokes.

Satellite image showing the changing river patterns of the Amazon River. Image: NASA, public domain.

Geography Facts About the Amazon River

Caitlin Dempsey

The Amazon River is one of the world's longest and largest rivers.ย  Here are some interesting geographical facts about the Amazon River.

Screenshot: Antipodes Map

What’s on the Other Side of the World?

Caitlin Dempsey

The spot diametrically opposed to a location on Earth is called the antipode.

These Two Satellite Images Highlight the Disappearance of a Glacier

Caitlin Dempsey

Okjรถkull was once a large glacier in Iceland located inย western Iceland on top of the volcanic mountain Ok.ย 

Version 3 of the ASTER Global Digital Elevation Model Released

Caitlin Dempsey

2.3 million scenes from the ASTER archive were processed to create the latest version of the ASTER Global Digital Elevation Model (GDEM).

A laptop running QGIS, a mapping software.

What Skills Does a Geographer Need?

Caitlin Dempsey

To be a successful geographer, certain skills are needed in order to be able to understand the Earthโ€™s physical environment as well as human patterns and processes.ย 

Black bear foraging in a trash can. Photo: Florida Fish and Wildlife, 2008, CC BY-ND

GPS Tracking Shows That Black Bears Avoid Humans During the Day

Caitlin Dempsey

A recent study found that American black bears tend to become more nocturnal during spring in summer to avoid interacting with humans as they search for food.

Map of the United States showing tree cover change in urban/community areas by state. Map: Nowak & Greenfield, 2018.

The U.S. is Losing 36 Million Trees Per Year

Caitlin Dempsey

A study from the US Forest Service has found that, nationally, tree cover is declining at a rate of 175,000 acres per year which is the equivalent of about 36 million trees lost each year.

Gulf of Mexico Remains the Second-largest Low-Oxygen Dead Zone on Earth

Caitlin Dempsey

A newly released forecast by the National Oceanic and Atmospheric Administration (NOAA) has predicted that the Gulf of Mexico will again become the second-largest low-oxygen dead zone on after (after the Baltic Sea). ย 

The Northernmost Permanently Inhabited Spot on Earth

Caitlin Dempsey

Located 817 kilometers (508ย mi) from the North Pole, Alert (82ยฐ30'05" ) is the northernmost place with a permanent (year-round) population. ย 

Japan’s Highest Mountain

Caitlin Dempsey

At 3,776 meters (12,389 feet) tall, Mount Fuji is Japan's highest mountain. ย 

How to Change the Projection of a Shapefile Using QGIS

Caitlin Dempsey

If you know your shapefile's beginning coordinate system or projection, you can export the data using QGIS.

With the Help of GPS Trackers, 40 Tons of Trash is Removed from the Pacific Ocean

Caitlin Dempsey

Ocean Voyages Institute (OVI), a nonprofit, recently collected 40 tons of trash from the Pacific Gyre.

NASA is Expanding its Worldwide Landslide Data Catalog Using Volunteers

Caitlin Dempsey

NASA has developedย Landslide Reporterย as a way to collect as much information as possible about landslides from citizen scientists from around the world.

Using Remote Sensing to Detect Structural Changes in Bridges

Caitlin Dempsey

Researchers are using synthetic aperture radar (SAR) collected from satellites to detect structural changes in bridges. ย 

NASA's Advanced Rapid Imaging and Analysis (ARIA) team created this co-seismic Interferometric Synthetic Aperture Radar (InSAR) map, which shows surface displacement caused by the recent major earthquakes in Southern California, including the magnitude 6.4 and the magnitude 7.1 events on July 4 and July 5, 2019, respectively. Credits: NASA/JPL-Caltech

Mapping Ground Movement From the 2019 California Earthquake with Satellite Data

Caitlin Dempsey

Researchers with NASA's Jet Propulsion Laboratory have used satellite data to map out surface displacement from the 2019 California earthquakes.

New GIS Dataset: Forest Carbon Stocks for the Western United States

Caitlin Dempsey

Covering 11 states, this GIS dataset contains annual estimates of carbon stocks, fluxes, and productivity for Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming. ย 

First Practice Exam for GISP Certification Released

Caitlin Dempsey

A practice exam for the GISP certification has been release which contains 50 questions broken down in the six knowledge categories.

Large Glacier Flour Storm Captured by Satellites

Caitlin Dempsey

When winds in Greenland are strong enough, they can carry large plumes of glacier flour that have collected on the floor of dried out floodplains. ย 

2018 NAIP Imagery

Caitlin Dempsey

Aerial imagery covering 20 states has been added to the USDA's direct access site for NAIP imagery.

Free Synthetic Aperture Radar Handbook Available

Caitlin Dempsey

This free handboo provides insight into how different Synthetic Aperture Radar (SAR) methodologies can be used for forest monitoring and biomass estimation. ย 

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