Western Geographic Science Center

Publications

Filter Total Items: 332
Publication Thumbnail
Year Published: 2019

Mapping cropland extent of Southeast and Northeast Asia using multi-year time-series Landsat 30-m data using Random Forest classifier on Google Earth Engine

Cropland extent maps are useful components for assessing food security. Ideally, such products are a useful addition to countrywide agricultural statistics since they are not politically biased and can be used to calculate cropland area for any spatial unit from an individual farm to various administrative unites (e.g., state, county, district)...

Oliphant, Adam; Thenkabail, Prasad S.; Teluguntla, Pardhasaradhi; Xiong, Jun; Gumma, Murali Krishna; Russell G. Congalton; Kamini Yadav

Publication Thumbnail
Year Published: 2019

Modelling development of riparian ranchlands using ecosystem services at the Aravaipa Watershed, SE Arizona

This paper describes how subdivision and development of rangelands within a remote and celebrated semiarid watershed near the US-Mexico border might affect multiple ecohydrological services provided, such as recharge of the aquifer, water and sediment yield, water quality, flow rates and downstream cultural and natural resources. Specifically, we...

Norman, Laura; Villarreal, Miguel; Niraula, Rewati; Haberstich, Mark; Wilson, Natalie

Publication Thumbnail
Year Published: 2019

Assessing hazards and risks at the Department of the Interior—A workshop report

On February 27–28, 2018, the U.S. Geological Survey and Department of the Interior (DOI) Office of Emergency Management (OEM) hosted a workshop to gather input from DOI subject matter experts (SMEs), resource managers, facility managers, emergency managers, and law enforcement personnel. Workshop goals were to (1) determine how DOI Bureaus and...

Wood, Nathan; Pennaz, Alice; Ludwig, Kristin; Jones, Jeanne; Henry, Kevin; Sherba, Jason; Ng, Peter; Marineau, Jason; Juskie, John
Wood, N., Pennaz, A., Ludwig, K., Jones, J., Henry, K, Sherba, J., Ng, P., Marineau, J., and Juskie, J., 2019, Assessing hazards and risks at the Department of the Interior—A workshop report: U.S. Geological Survey Circular 1453, 42 p., https://doi.org/10.3133/cir1453.

Publication Thumbnail
Year Published: 2019

Distant neighbors: recent wildfire patterns of the Madrean Sky Islands of southwestern United States and northwestern Mexico

BackgroundInformation about contemporary fire regimes across the Sky Island mountain ranges of the Madrean Archipelago Ecoregion in the southwestern United States and northern Mexico can provide insight into how historical fire management and land use have influenced fire regimes, and can be used to guide fuels management, ecological restoration,...

Villarreal, Miguel L.; Haire, Sandra L.; Iniguez, Jose M.; Cortés Montaño, Citlali; Poitras, Travis B.

Publication Thumbnail
Year Published: 2019

Modeling riparian restoration impacts on the hydrologic cycle at the Babacomari Ranch, SE Arizona, USA

This paper describes coupling field experiments with surface and groundwater modeling to investigate rangelands of SE Arizona, USA using erosion-control structures to augment shallow and deep aquifer recharge. We collected field data to describe the physical and hydrological properties before and after gabions (caged riprap) were installed in an...

Norman, Laura M.; Callegary, James B.; Lacher, Laurel; Wilson, Natalie R.; Fandel, Chloé; Forbes, Brandon T.; Swetnam, Tyson

Publication Thumbnail
Year Published: 2019

A bibliometric profile of the Remote Sensing Open Access Journal published by MDPI between 2009 and 2018

Remote Sensing Open Access Journal (RS OAJ) is an international leading journal in the field of remote sensing science and technology. It was first published in the year 2009 and is currently celebrating tenth year of publications. In this research, a bibliometric analysis of RS OAJ was conducted based on 5588 articles published during the 10-year...

Zhang, YuYing; Thenkabail, Prasad S.; Wang, Peng

Publication Thumbnail
Year Published: 2019

Nominal 30-m cropland extent map of continental Africa by integrating pixel-based and object-based algorithms using Sentinel-2 and Landsat-8 Data on Google Earth Engine

A satellite-derived cropland extent map at high spatial resolution (30-m or better) is a must for food and water security analysis. Precise and accurate global cropland extent maps, indicating cropland and non-cropland areas, are starting points to develop higher-level products such as crop watering methods (irrigated or rainfed), cropping...

Xiong, Jun N.; Thenkabail, Prasad S.; James C. Tilton; Gumma, Murali Krishna; Teluguntla, Pardhasaradhi G.; Oliphant, Adam; Congalton, Russell G.; Yadav, Kamini; Gorelick, Noel

Publication Thumbnail
Year Published: 2019

MODIS phenology-derived, multi-year distribution of conterminous U.S. crop types

Innovative, open, and rapid methods to map crop types over large areas are needed for long-term cropland monitoring. We developed two novel and automated decision tree classification approaches to map crop types across the conterminous United States (U.S.) using MODIS 250 m resolution data: 1) generalized, and 2) year-specific...

Massey, Richard; Sankey, T.T; Congalton, Russ; Yadav, Kamini; Thenkabail, Prasad; Ozdogan, Mutlu; Meador, Sanchez

Publication Thumbnail
Year Published: 2018

Grasslands

Key findings:Total grassland carbon stocks in the conterminous United States, estimated to be about 7.4 petagrams of carbon (Pg C) in 2005, are projected to increase to about 8.2 Pg C by 2050. Although U.S. grasslands are expected to remain carbon sinks over this period, the uptake rate is projected to decline by about half. In the U.S. Great...

Cavallaro, Nancy; Shrestha, Gyami; Birdsey, Richard; Mayes, Melanie A.; Najjar, Raymond G.; Reed, Sasha C.; Romero-Lankao, Patricia; Zhu, Zhiliang; Pendall, Elise; Bachelet, Dominique; Conant, Richard T.; El Masri, Bassil; Flanagan, Lawrence B.; Knapp, Alan K.; Liu, Jinxun; Liu, Shuguang; Schaeffer, Sean M.

Publication Thumbnail
Year Published: 2018

Accuracies achieved in classifying five leading world crop types and their growth stages using optimal Earth Observing-1 Hyperion hyperspectral narrowbands on Google Earth Engine

As the global population increases, we face increasing demand for food and nutrition. Remote sensing can help monitor food availability to assess global food security rapidly and accurately enough to inform decision-making. However, advances in remote sensing technology are still often limited to multispectral broadband sensors. Although these...

Aneece, Itiya; Thenkabail, Prasad S.

Publication Thumbnail
Year Published: 2018

Spaceborne hyperspectral EO-1 hyperion data pre-processing: Methods, approaches, and algorithms

No abstract available.

Thenkabail, Prasad S.; Lyon, J.G.; Huete, Alfredo; Aneece, Itiya P.; Thenkabail, Prasad S.; Lyon, John G.; Huete, Alfredo; Slonecker, Terrance