Author Archives: iowaview

A Great Day For Earth Observation – Part II

By Earth Observation Day, Education, Event, Outreach, , , , ,

The second part of Earth Observation Day was dedicated to using OpenStreetMap to remotely map Wayland, Iowa and Mindanao region of the Philippines.

Amy Logan, an IowaView staff member, gave a brief introduction to remote sensing and OpenStreetMap. Then mappers began working on a TeachOSM task – Improving the Iowa OSM Basemap: Wayland, Iowa (https://tasks.teachosm.org/project/981). Beverly Conrad, the city clerk of Wayland came for the mapathon and was able to provide local knowledge about the areas participants were mapping. New mappers were encouraged to do the OSM iD Editor Walk-through before they began mapping. It provides users with a nice hands-on introduction of the OpenStreetMap interface and how to create data.

Beverly Conrad discussing a feature with mapathon participants.

Wayland is a small town (population: 966) in southeast Iowa that has wanted to move towards a GIS asset management system, yet much of their city needed to be mapped. As a result of the volunteer efforts of our 22 mappers during the Earth Observation Day mapathon event, partcipants mapped over 70% of the city, including over 470 buildings as well as sidewalks, alleys, parks, and other points of interest. Below is a before and after screenshot of the OpenStreetMap basemap for the City of Wayland, Iowa.

Thank you, Mappers!

The second project was a Humanitarian OpenStreetMap Task improving the basemap in the Philippines to promote food security. This project added details to the basemap such as minor roads and path, buildings, and farmland.

A Great day for Earth Observation – Part I

By Earth Observation Day, Uncategorized, , ,

Earth Observation Day 2019 was super.

First, Professor Peter Wolter shared with us several projects he has worked on in northern forests of Minnesota, Wisconsin, and Michigan. He explained how he has used multiple satellites/sensors to identify specific traits in trees (wavelength, height, temporal change, etc.) which allowed him to classify different regions of the forest by species. Below are some pictures from his presentation. Thank you, Peter!

Loess Hills: Iowa Landforms Revealed

By Education, Imagery, IowaLandformsRevealed, Outreach, , , ,

Obscured from view by vegetation and built structures, Iowa’s often subtle landforms are revealed through a LiDAR-derived bare earth digital elevation model in a Geographic Information System. Geological and human made features can be seen in this series of LiDAR color hillshade maps from across the State.

Loess

Deep deposits of wind-blown silt define the Loess Hills region of western Iowa. Intricate drainage networks and agricultural terraces are visible in this map from along the West Nishnabotna River near Hamburg.

Click on image to explore.
This image is of part of the Loess Hills in southwest Iowa.

Algona Moraine: Iowa Landforms Revealed

By Imagery, IowaLandformsRevealed, Outreach, , , ,

Obscured from view by vegetation and built structures, Iowa’s often subtle landforms are revealed through a LiDAR-derived bare earth digital elevation model in a Geographic Information System. Geological and human made features can be seen in this series of LiDAR color hillshade maps from across the State.

Algona

The elevated curved features in this map are glacial moraines deposited during the most recent period of glaciation in north-central Iowa. The largest in this view is called the Algona Moraine.

The Algona Moraine is located in north central Iowa.

    Oneota River Valley: Iowa Landforms Revealed

    By Imagery, IowaLandformsRevealed, Outreach, , , ,

    Obscured from view by vegetation and built structures, Iowa’s often subtle landforms are revealed through a LiDAR-derived bare earth digital elevation model in a Geographic Information System. Geological and human made features can be seen in this series of LiDAR color hillshade maps from across the State.

    Oneota

    Originally called the Oneota, the central river feature in this map is the Upper Iowa River. The well-defined drainage features are characteristic of the Driftless area of northeast Iowa.

    Click on the image to explore in detail.
    The Oneota River Valley is located in northeastern Iowa.

    Coming Soon: Earth Observation Day – Tuesday October 15, 2019

    By Earth Observation Day, Education, Event, Outreach, , , ,

    When: Tuesday, October 15, 2019
    Where: GIS Teaching Lab, Room 248, Durham Center, Iowa State University, Ames, Iowa

    This year the ISU GIS Facility in collaboration with IowaView will be celebrating Earth Observation Day. This year the theme is “Geoscience is Everywhere.” We have a great day planned.

    To start out our day at 10:30am, Professor Peter Wolter will share how he is using remote sensing to measure forest structure and composition. Then we will have a Humanitarian Open Street Map Event 11am-12:30pm. No experience is needed. First, we will have an Iowa-Focused activity 11:00am-11:45am and then we will focus our efforts on an international Humanitarian OpenStreetMap activity from 11:45am-12:30pm. We will also have pizza and you are encouraged to try our new puzzles.

    REGISTER NOW: https://forms.gle/pDeEHbLY1eEV6Ejq7Ejq7

    Paha Ridges: Iowa Landforms Revealed

    By Imagery, IowaLandformsRevealed, Outreach, ,

    Obscured from view by vegetation and built structures, Iowa’s often subtle landforms are revealed through a LiDAR-derived bare earth digital elevation model in a Geographic Information System. Geological and human made features can be seen in this series of LiDAR color hillshade maps from across the State.

    Paha

    The elevated linear ridges in this map are erosional geological features called Paha and are found primarily in east-central Iowa along major river valleys.

    The Paha ridges are found in east-central Iowa.