Articles

Viz Palette Helps You Pick Colors for Your Maps and Data Visualizations

Caitlin Dempsey

There's a new color picker tool to help with selecting a palette for data visualizations.

Source: Oliver et al, 2018

Marine Heatwaves are Becoming Longer and More Frequent

Caitlin Dempsey

Researchers, using satellite observations, have found that marine heatwaves are becoming more frequent and longer lasting.

Over 2000 Sentinel-1 Satellite Images Were Used to Create a Map of Land Deformation in the United Kingdom

Caitlin Dempsey

A new map of the United Kingdom map tracks areas of land subsidence and uplift based on processed data from Sentinel-1's Synthetic Aperture Radar (SAR).

Mapping Minerals with Satellite Imagery

Mark Altaweel

Mapping minerals with remote sensing was one of the main motivating reasons for creating the earliest multispectral satellite systems.

Screenshot from the EO Browser showing a grayscale map and the location of the search box for finding a geographic area.

Tool from Sentinel Hub Lets You Create Time-lapse GIFs from Satellite Imagery

Caitlin Dempsey

The EO Browser allows creating animated GIFs from satellite image time series. This tutorial demonstrates how to create your own time-lapse GIF.

An Eye Protein May Be What Allows Birds to Sense Magnetic North

Caitlin Dempsey

New research proposes that Cry4, a light-sensitive protein found in the eye's retina may be responsible for magnetoreception in birds.

Visit Almost Four Hundred Years of Mapping Inner Earth With this Virtual Map Exhibit

Elizabeth Borneman

This virtual exhibit shows different theories and maps that have been created postulating what Earth’s interior looks like throughout history and showed evolution of our ideas of what lies beneath our feet.

Geography and Religion

Mark Altaweel

Geographers study religions and their development based on the role that geography intersects with other important social components within a human geographic approach.

Detecting Flooded Roads From Satellite Imagery

Mark Altaweel

Mapping flood damage by manually examine imagery is a time-intensive and expensive process. New, automated methods using satellite data that compare pre and post-flood conditions are being developed.

Screenshot showing Google Maps routing for wheelchair access.

Online Accessibility Maps Should be Interactive

Olivia Harne

For a consistent experience across mobile devices, accessibility maps should be interactive instead of static images or PDFs.

A screenshot showing ArcMap.

What is a MXD File?

Caitlin Dempsey

Files with the extension .mxd are ArcMap document files and stands for Map Exchange Document.

NASA Wants You to Send Your Name to the Sun

Caitlin Dempsey

To celebrate an upcoming groundbreaking mission to the Sun's atmosphere, NASA is inviting the public to submit their names to be added to a microchip which will be placed onboard the Parker Solar Probe.

Using GIS to Study Gentrification

Mark Altaweel

Amid US gentrification trends, municipalities are increasingly using GIS to study its impacts.

The Great Pacific Garbage Patch is Much Larger Than Previously Thought

Caitlin Dempsey

Researchers using surface trawl samples and aerial imagery surveys have calculated the amount of plastic debris in the Great Pacific Garbage Patch.

The Use of Drones in Human and Physical Geography

Mark Altaweel

With the widespread use of drones, methods are likely to be further refined to improve not only the use of UAVs in physical measurements in geography but even expanded to areas of the social sciences.

Can High Tech Analysis of the Vinland Map Finally Answer Questions About its Authenticity?

Mark Altaweel

Yale University is using high tech imagery analysis such as reflectance transformation imaging (RTI) to determine the authenticity of the Vinland Map, a purported 15th-century world map that has long been widely believed to be a 20th century forgery.

Review | The First Three Hundred Years of Historical Atlases

G.T. Dempsey

Though published a decade and a half ago, Walter Goffart's Historical Atlases:  The First Three Hundred Years, remains the indispensable reference source for the appearance and development of historical atlases in the Western world. 

GIS, Data Preservation, and Gentrification

Olivia Harne

Olivia Harne discusses how smart planning that incorporates GIS needs to take into account the historic identity of gentrifying neighborhoods.  

Map of Irish Surnames from 1890 Census.

St. Patrick’s Day Maps and Geography

Caitlin Dempsey

Find maps about Irish surnames and the geography of St. Patrick's day from the US Census.

Rapid Ocean Floor Mapping

Mark Altaweel

Rapid ocean floor mapping is considered one of humanity’s grand challenges. To highlight this challenge, Xprise recently announced the finalists for its grand challenges competition to rapidly map the ocean floors.

Visualizing Temporal Data with GIS

Mark Altaweel

While mapping spatiotemporal data has remained a challenge, increasingly we are seeing tools that are available on common open source platforms (e.g., R statistical package and QGIS) or commercial platforms such as ArcGIS.

Adding “Early Voting Wait Time” Information to a Layer in ArcGIS.com

Geo Contributor

Tracy Garrison outlines an example of how a “County” might provide current early voting wait times to the public with ArcGIS.com and coding.  

From: Decker, D.J., M.E.. Krasny, G.R. Goff, C.R. Smith and D.W. Gross, editors. 1991. Challenges in the conservation of biological reserves - a practitioner’s guide. Westview Press. 402 pp.

Mapping How Birds Are Affected by Human Activity

Mark Altaweel

GIS and spatial analysis have demonstrated the complexity of how anthropogenic disturbances  could affect birds and bird habitats.

The Role of GIS in Predicting Road Conditions

Mark Altaweel

Recent developments in GIS and analytical applications have demonstrated that predicting road conditions, and thus preventing traffic accidents and possibly even traffic in the first place, is possible.

Researchers Analyzed over 22 Billion Shipping Positions to Map the Global Footprint of Industrial Fishing

Caitlin Dempsey

To map out global fishing activity, over 22 billion AIS messages between 2012 and 2016 were analyzed by researchers.

QGIS 3.0 Released

Caitlin Dempsey

Version 3.0 of QGIS, the popular free and open source GIS software, was released today.