Articles

High Altitude Pseudo-Satellites

Mark Altaweel

High altitude pseudo-satellites (HAPS) are systems or platforms that usually float or operate for long periods, sometimes for months, at about 20 km above the Earth’s surface and can be potentially used to complement earth observation satellites.

Example of Image segmentation.

Transforming Satellite Imagery Classification with Deep Learning

Mark Altaweel

Deep learning has a potential to transform image classification and its use for the spatial sciences, including GIS.

An image that says "GIS certification" in black letters with a trophy that is tipped over with gold stars spilling out the top with a light blue background.

GIS Certification versus Certificate Programs

Caitlin Dempsey

GIS certification and certificate programs are two similarly named yet different markers of a person's GIS education and skills achievements.

Monitoring Algal Blooms with Remote Sensing

Mark Altaweel

Given the importance of knowing how blooms affect aquatic life, remote sensing techniques using a variety of available imagery have been developed.

An Algorithm to More Accurately Classify Land Cover Using Landsat Imagery

Mark Altaweel

Hankui Zhang, from South Dakota State University, has developed a new classification technique that combine satellite images from MODIS and Landsat.

Satellite image of northeastern cities of Pyeongchang and Gangneung, South Korea.

Geography of the Winter Olympic Games

Caitlin Dempsey

Learn about the Olympic Winter Games' geography.

Holographic GIS

Mark Altaweel

As mobile and handheld devices increasingly use virtual reality and augmented reality applications, GIS has been incorporated to deploy spatial databases that apply holographic capabilities.

Review | A History of the Future

G.T. Dempsey

The History of Future presents a survey of the history of futuristic predictions from the nineteenth century on through the first two-thirds of the twentieth, in the English-speaking world

Using GIS to Analyze the Geography of Cemeteries

Mark Altaweel

In addition to studying historic burial sites, GIS has also been shown to be effective in managing modern cemeteries, particularly as space becomes an increasing problem in densely populated regions.

Using Virtual Reality to Promote Information Literacy among Students

Caitlin Dempsey

Virtual reality (VR) is emerging as an effective technology that librarians can use to help develop geographic information literacy among students of all ages.

A Victorian Teenager Created These Comical Maps of Different European Countries

Caitlin Dempsey

In the 1860s, a young girl decided to amuse her sick brother by creating maps of various European countries.  

How to Add a Map from Mapbox to QGIS

Caitlin Dempsey

This tutorial will show you how to take a map style you have created in Mapbox and load it into a QGIS session.

Debris from the 2011 Japanese Tsunami Carried Almost 300 Marine Species Across the Pacific Ocean

Caitlin Dempsey

A group of researchers inventoried what marine species traveled across the Pacific Ocean between 2012 and 2017 as the result of a biological rafting event created by the 2011 Japanese Tsunami.

Visualizing Climate Change With Maps

Mark Altaweel

The choice of labeling and color can have a pronounced influence in shaping opinions when visualizing climate change on maps.

GeoQuiz: Guess the Country

Elizabeth Borneman

Take the following geography quiz to see if you can guess the country using just its outline.

Two men with their back turned in a room with fluorescent lighting.

Collaborative Documentation of Online GIS Applications

Olivia Harne

Olivia Harne discusses the need for adequate documentation by project members when developing online GIS applications.

LiDAR was used to Map Flooding from Hurricane Isaac. Source: USGS

LiDAR: Light Detection And Ranging

Elizabeth Borneman

LiDAR systems are used to collect high resolution topographic and bathymetric data.

Developing Damage Proxy Maps from Satellite Data

Elizabeth Borneman

Satellite data is being used to create Damage Proxy Maps to assess changes in an area as the result of natural disasters like Hurricane Maria in Puerto Rico, and the wildfires that have hit Northern and Southern California.

GIS and Gerrymandering

Mark Altaweel

GIS can be used to detect and also assist in gerrymandering when developing new district maps.

How Often Does it Snow in the Sahara Desert?

Caitlin Dempsey

The sight of snow in the Sahara Desert is rare, but it does happen on occasion.

Free GIS Data Viewers

Caitlin Dempsey

Free data viewers for a variety of GIS data formats. These viewers allow you to display geographic data as well as perform some basic GIS functions.

How to Geocode Addresses Using QGIS

Caitlin Dempsey

If you have a CSV formatted file containing addresses, you can take advantage of QGIS to map out those addresses. This article contains step by step instructions for geocoding addresses using QGIS.

GIS and Territorial Disputes

Mark Altaweel

The use of GIS for mapping territorial disputes has played both a positive and negative role in resolving these disputes.

Nighttime Illumination Continues to Grow Worldwide

Caitlin Dempsey

A new study used remotely sensed data from an earth observation satellite to analyze the rate of increase in artificial night lights between 2012 and 2016.

When Predictions Match Reality: The Power of LiDAR for Flood Warnings

Geo Contributor

LiDAR data is being used to develop highly accurate elevation-enabled flood inundation mapping in advance of major storms in North Carolina.

Map of Cold and Hot Temperature Anomalies Across the World

Caitlin Dempsey

NASA has compiled a temperature anomaly map of the world using data acquired between December 26, 2017 and January 2, 2018.