Western Geographic Science Center

Publications

Filter Total Items: 378
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Year Published: 2020

Evaluating social vulnerability indicators: Criteria and their application to the Social Vulnerability Index

As a concept, social vulnerability describes combinations of social, cultural, economic, political, and institutional processes that shape socioeconomic differentials in the experience of and recovery from hazards. Quantitative measures of social vulnerability are widely used in research and practice. In this paper, we establish criteria for the...

Spielman, Seth; Tuccillo, Joseph; Folch, David; Schweikert, Amy; Davies, Rebecca; Wood, Nathan J.; Tate, Eric

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Year Published: 2020

Agricultural cropland extent and areas of South Asia derived using Landsat satellite 30-m time-series big-data using random forest machine learning algorithms on the Google Earth Engine cloud

The South Asia (India, Pakistan, Bangladesh, Nepal, Sri Lanka and Bhutan) has a staggering 900 million people (~43% of the population) who face food insecurity or severe food insecurity as per United Nations, Food and Agriculture Organization’s (FAO) the Food Insecurity Experience Scale (FIES). The existing coarse-resolution (>250-m) cropland...

Murali Krishna Gumma; Thenkabail, Prasad; Pardhasaradhi Teluguntla; Oliphant, Adam

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Year Published: 2020

Hydrologic resilience from summertime fog and recharge: A case study for coho salmon recovery planning

Fog and low cloud cover (FLCC) and late summer recharge increase stream baseflow and decrease stream temperature during arid Mediterranean climate summers, which benefits salmon especially under climate warming conditions. The potential to discharge cool water to streams during the late summer (hydrologic capacity; HC) furnished by FLCC and...

Torregrosa, Alicia; Flint, Lorraine E.; Flint, Alan L.

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Year Published: 2020

A meta-analysis of global crop water productivity of three leading world crops (wheat, corn, and rice) in the irrigated areas over three decades

The overarching goal of this study was to perform a comprehensive meta-analysis of irrigated agricultural Crop Water Productivity (CWP) of the world’s three leading crops: wheat, corn, and rice based on three decades of remote sensing and non-remote sensing-based studies. Overall, CWP data from 148 crop growing study sites (60 wheat, 43 corn, and...

Daniel J. Foley; Thenkabail, Prasad; Aneece, Itiya; Pardhasaradhi Teluguntla; Oliphant, Adam

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Year Published: 2020

Planners tool up for the next big one

Data, modeling, risk analysis, and hazard scenario resources can help put earthquake mitigation efforts on firmer ground. Article discusses general earthquake information and findings of the HayWired scenario for a planner audience.

Laurie Johnson; Wein, Anne M.

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Year Published: 2019

Rating fire danger from the ground up

Soil moisture information could improve assessments of wildfire probabilities and fuel conditions, resulting in better fire danger ratings.

Matthew Levi; Erik S. Krueger; Grant J. Snitker; Tyson Ochsner; Villarreal, Miguel L.; Emile H. Elias; Dannele E. Peck

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Year Published: 2019

Marine fog inputs appear to increase methylmercury bioaccumulation in a coastal terrestrial food web

Coastal marine atmospheric fog has recently been implicated as a potential source of ocean-derived monomethylmercury (MMHg) to coastal terrestrial ecosystems through the process of sea-to-land advection of foggy air masses followed by wet deposition. This study examined whether pumas (Puma concolor) in coastal central California, USA, and their...

Weiss-Penzias, Peter S.; Bank, Michael S.; Clifford, Deana L.; Torregrosa, Alicia; Zheng, Belle; Lin, Wendy; Wilmers, Christopher C.

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Year Published: 2019

Phenology patterns indicate recovery trajectories of ponderosa pine forests after high-severity fires

Post-fire recovery trajectories in ponderosa pine (Pinus ponderosa Laws.) forests of the US Southwest are increasingly shifting away from pre-burn vegetation communities. This study investigated whether phenological metrics derived from a multi-decade remotely sensed imagery time-series could differentiate among grass, evergreen shrub, deciduous...

Walker, Jessica J.; Soulard, Christopher E.

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Year Published: 2019

A mosaic of land tenure and ownership creates challenges and opportunities for transboundary conservation in the US-Mexico borderlands

In the Madrean Sky Islands of western North America, a mixture of public and private land ownership and tenure creates a complex situation for collaborative efforts in conservation. In this case study, we describe the current ownership and management structures in the US-Mexico borderlands where social, political, and economic conditions create...

Villarreal, Miguel L.; Haire, Sandra L.; Juan Carlos Bravo; Norman, Laura M.

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Year Published: 2019

Landsat time series assessment of invasive annual grasses following energy development

Invasive annual grasses are of concern in many areas of the Western United States because they tolerate resource variability and have high reproductive capacity, with propagules that are readily dispersed in disturbed areas like those created and maintained for energy development. Early-season invasive grasses “green up” earlier than the most...

Villarreal, Miguel L.; Soulard, Christopher E.; Eric Waller
Villarreal, M.L., Soulard, C.E. and E.K. Waller. 2019. Landsat time series assessment of invasive annual grasses following energy development. Remote Sensing 11(21), 2553. https://doi.org/10.3390/rs11212553

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Year Published: 2019

The HayWired earthquake scenario—Societal consequences

The HayWired Earthquake Scenario—Societal Consequences is the third volume of U.S. Geological Survey (USGS) Scientific Investigations Report 2017–5013, which describes the HayWired scenario, developed by USGS and its partners. The scenario is a hypothetical yet scientifically realistic earthquake sequence that is being used to better understand...

Detweiler, Shane T.; Wein, Anne M.
Detweiler, S.T., and Wein, A.M., eds., The HayWired earthquake scenario—Societal consequences: U.S. Geological Survey Scientific Investigations Report 2017–5013–R–W, https://doi.org/10.3133/sir20175013V3.

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Year Published: 2019

Spatial and temporal distribution of bacterial indicators and microbial-source tracking within Tumacácori National Historical Park and the upper Santa Cruz River, southern Arizona and northern Mexico, 2015–2016

Tumacácori National Historical Park (TUMA) in southern Arizona protects the culturally important Mission San José de Tumacácori, while also managing a part of the ecologically diverse riparian corridor of the Santa Cruz River. The quality of the water flowing through depends solely on upstream watershed activities, and among the water-quality...

Paretti, Nicholas V.; Kephart, Christopher M.; Porter, Thomas J.; Hermosillo, Edyth; Cederberg, Jay R.; Mayo, Justine P.; Gungle, Bruce W.; Coes, Alissa L.; Tucci, Rachel S.; Norman, Laura M.
Paretti, N.V., Kephart, C.M., Porter, T.J., Hermosillo, E., Cederberg, J.R., Mayo, J.P., Gungle, B., Coes, A.L., Tucci, R.S., and Norman, L.M., 2019, Spatial and temporal distribution of bacterial indicators and microbial-source tracking within Tumacácori National Historical Park and the upper Santa Cruz River, southern Arizona and northern Mexico, 2015–2016: U.S. Geological Survey Scientific Investigations Report 2019–5108, 102 p., https://doi.org/10.3133/sir20195108.