Featured Research

from universities, journals, and other organizations

NASA Uses A 'SLEUTH' To Predict Urban Land Use

Date:
March 26, 2004
Source:
NASA/Goddard Space Flight Center
Summary:
According to NASA-funded researchers, developed land in the greater Washington-Baltimore metropolitan area is projected to increase 80 percent by 2030. Scientists used a computer-based decision support model loaded with NASA and commercial satellite images to simulate three policies affecting land use.

Forecast of Development Patterns in 2030 for Current Trends Scenario: This image shows the forecast of development patterns around the greater Washington-Baltimore metropolitan area in 2030 in a scenario where current trends continued as they are now. This scenario included forest and agricultural preservation already in place, leaving unprotected areas open for development. When current trends remained, development increased by 80 percent by 2030.
Credit: Claire Jantz

According to NASA-funded researchers, developed land in the greater Washington-Baltimore metropolitan area is projected to increase 80 percent by 2030. Scientists used a computer-based decision support model loaded with NASA and commercial satellite images to simulate three policies affecting land use.

The researchers, Claire Jantz and Scott Goetz, from the University of Maryland, College Park, Md., and the Woods Hole Research Center, Woods Hole, Mass., also found a 39 percent increase in developed land in the region from 1986 to 2000. Some of the most striking changes occurred around the Dulles Airport area in Northern Virginia.

Observations from NASA and commercial Earth observation satellites were used in a United States Geological Survey (USGS) computer model, called SLEUTH. The model was applied to 23,700 square kilometers (9151 sq. miles) of the Washington-Baltimore metropolitan area. The initial aim was to simulate the impact of future policy scenarios on the area and Chesapeake Bay watershed. "The satellite observations provided us with an unprecedented ability to monitor the urbanization process and capture the patterns of urban sprawl," Goetz said.

The study is in the March issue of Environment and Planning B. It explains how models may be used to forecast the effects of urban growth and runoff on the Chesapeake Bay estuary system.

The study showed how high resolution commercial imagery from Space Imaging's IKONOS satellite can be used to complement NASA's imagery from Landsat satellites. IKONOS images, with resolutions up to one meter (3.28 feet), were used with county-level air photos to link to 30-meter Landsat observations, which cover vast areas and offer a longer time frame for assessing urban change.

The project was designed to study declining water quality in the Chesapeake Bay estuary due in part to disruptions in the hydrological system caused by urban and suburban development. The goal was to create a modeling system that could assess future development and support decision making by exploring the potential impact of different regional management scenarios. Future growth was projected out to 2030 using three different policy scenarios. The scenarios were based on current trends, managed, and ecologically sustainable growth.

The current trends scenario simulated how the Washington metropolitan area might change if development policies remained the same. This scenario included forest and agricultural preservation already in place, leaving unprotected areas open for development. In this scenario, development increased by 80 percent by 2030.

The managed growth scenario assumed added protection of forests and agriculture areas and placed moderate growth boundaries around already built areas. In this scenario, development increased by 30 percent by 2030. In the ecological scenario, strong protection of most forests and agricultural areas was projected, so development only increased by 20 percent by 2030.

"The model is a tool that can be used for land use planning and resource management," Jantz said. "It offers the ability to explore and visualize alternative futures."

The model is applicable to land use studies, and it has small to large-scale potential. It can also help decision- makers assess the configuration of landscapes in forests and urban areas, and understand sources of runoff related to water quality in streams. The Maryland Department of Natural Resources is exploring use of the model to target forest resources, restoration and conservation activities.

NASA's Earth Science Enterprise is dedicated to understanding the Earth as an integrated system and applying Earth System Science to improve prediction of climate, weather, and natural hazards using the unique vantage point of space. NASA funded the study, with additional funds from the Chesapeake Bay Foundation.


Story Source:

The above story is based on materials provided by NASA/Goddard Space Flight Center. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Goddard Space Flight Center. "NASA Uses A 'SLEUTH' To Predict Urban Land Use." ScienceDaily. ScienceDaily, 26 March 2004. <www.sciencedaily.com/releases/2004/03/040326073640.htm>.
NASA/Goddard Space Flight Center. (2004, March 26). NASA Uses A 'SLEUTH' To Predict Urban Land Use. ScienceDaily. Retrieved August 2, 2014 from www.sciencedaily.com/releases/2004/03/040326073640.htm
NASA/Goddard Space Flight Center. "NASA Uses A 'SLEUTH' To Predict Urban Land Use." ScienceDaily. www.sciencedaily.com/releases/2004/03/040326073640.htm (accessed August 2, 2014).

Share This




More Earth & Climate News

Saturday, August 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pyrenees Orphan Bear Cub Gets Brand New Home

Pyrenees Orphan Bear Cub Gets Brand New Home

AFP (Aug. 1, 2014) The discovery of a bear cub in the Pyrenees mountains made headlines in April 2014. Despire several attempts to find the animal's mother, the cub remained alone. Now, the Pyrenees Conservation Foundation has constructed an enclosure. Duration: 00:31 Video provided by AFP
Powered by NewsLook.com
Rare Whale Fossil Pulled from Calif. Backyard

Rare Whale Fossil Pulled from Calif. Backyard

AP (Aug. 1, 2014) A rare whale fossil has been pulled from a Southern California backyard. The 16- to 17-million-year-old baleen whale fossil is one of about 20 baleen whale fossils known to exist. (Aug. 1) Video provided by AP
Powered by NewsLook.com
Greenpeace Ship Arctic Sunrise Free to Leave Russia

Greenpeace Ship Arctic Sunrise Free to Leave Russia

AFP (Aug. 1, 2014) Greenpeace's ship Arctic Sunrise, held in custody by the Russian authorities since September last year, has departed the Russian city of Murmansk en route for its home port of Amsterdam. Duration: 01:04 Video provided by AFP
Powered by NewsLook.com
Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins