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April 2018

Insight Into the Physical Signatures of Marsh Erosion

April 05, 2018
3:00 pm - 4:00 pm
Eller O&M Bldg., Room 807

Salt marshes along the Galveston Bay coast experience a high degree of edge erosion caused by wave impact. The goal of this study was to determine the minimum wave height contributing to marsh erosion.

Applications: Environment
Science: Geosciences
Technology: Land

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March 2018

Eyes in the Heavens: Satellite Technologies for Remote Site Characterization

March 23, 2018
12:00 pm - 1:00 pm
DLEB 702 College Station, TX United States + Google Map

This presentation is based on the article ‘Eyes in the Heavens’ (Geostrata, 2017) with a very special theme: “Geotechnics at remote sites”. Installation and maintenance of instrumentation to monitor geotechnical projects in remote locations is usually more challenging than sites in urban areas. In this presentation, Dr. Zhangwei Ning will introduce the roles and applications of three different satellites for remote site monitoring with case studies. These are: telecommunication satellite…

Applications: Environment
Science: Engineering
Technology: Space

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Re-Framing I: Correcting the Scaling of Spatial Autocorrelation and a New Method to Tackle Big Data

March 22, 2018
3:00 pm - 4:00 pm
Eller O&M Bldg., Room 807

Dr. Thomas J. DeWitt Department of Wildlife & Fisheries Associate Professor Moran’s I is an iconic measure of spatial autocorrelation. It is elegant for its intended basic and intuitive nature, ofen idealized beyond its actual character. Several authors have noticed problems of bias, distribution assumption violations, and scale exception snafus with the original statistic. Still, I is generally treated as its Platonic ideal. Ideally, I ranges with a bell­‐curve form…

Science: Agriculture & Life Sciences
Applications: Environment
Technology: Land, Sea

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Balancing Urban Growth and Ecological Conservation: A Geographical Perspective

March 08, 2018
3:00 pm - 4:00 pm

The location, rate, and magnitude of urban expansion will affect wide-­ranging phenomena including ecosystems and biodiversity. A global analysis of urban extent circa 2000 and urban expansion forecasts out to 2030 indicates that the amount of urban land within 50 km of the world’s protected areas will triple by 2030.

Applications: Environment, Society
Science: Architecture & Urban Planning, Government & Economics
Technology: Land

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February 2018

Probing Methane in Air with Infrared Sources

February 22, 2018
3:00 pm - 4:00 pm
Eller O&M Bldg., Room 807

Dr. Hans A. Schuessler Department of Physics and Astronomy Professor & Chair of Optical and Biomedical Physics Abstract High resolution spectroscopy in the infra-red has been employed for monitoring atmospheric pollution with a variety of techniques. Here we report on recent advances using broadband mid-infrared frequency combs in dual comb spectroscopy, and narrow band diode lasers in cavity ring-down and wavelength modulation spectroscopies for the detection of methane in ambient…

Technology: Air
Applications: Environment
Science: Physics & Astronomy

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Planetary Geology: Science and Operations

February 08, 2018
3:00 pm - 4:00 pm
Eller O&M Bldg., Room 807

This talk provides an overview of science and operation decision making with examples from the Mars Science Laboratory Curiosity rover, and discusses opportunities to explore engineering and operations in analog planetary environments.

Applications: Economic, Society
Science: Engineering, Government & Economics, Physics & Astronomy
Technology: Land, Space

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November 2017

Z-Curve: A Geographical Projection of GNSS (Global Navigation Satellites Systems) Signal, Time, and Position

November 16, 2017
3:00 pm - 4:00 pm
Eller O&M Bldg. Rm 807

This talk presents a novel geometric model to characterize the zero-­crossing curve (or z-­curve) for the signals emitted by a pair of GNSS satellites, which is the intersection of the Earth surface and the z‐surface that has zero difference in its pseudoranges to the two satellites.

Applications: Environment
Science: Education, Engineering
Technology: Space

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Advances in LiDAR Data Processing: From Waveform to Photon Counting LiDAR

November 02, 2017
3:00 pm - 4:00 pm
Eller O&M Bldg. Rm 807

the overall goal of the research is to develop algorithms for FW and PCL data processing to explore their potential in real-world applications such as tree species identification and to quantify the uncertainty of model building, data processing, and applications steps.

Applications: Environment
Science: Education, Geosciences, Information Science
Technology: Land

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October 2017

Ground Penetrating Radar: Uncovering the ‘Hidden Half’

October 19, 2017
3:00 pm - 4:00 pm
Eller O&M Bldg. Rm 807

Alfredo Delgado Deparment of Soil and Crop Sciences, Texas A&M University Graduate Student Abstract GPR is an existing and rapidly evolving technology that can be used as a high throughput, non-­destructive-­3­‐dimensional imaging method – for quantifying root mass. With the ability to detect subtle differences in the soil media, GPR has often been utilized as a small cross-­section near-­surface object detection tool. GPR technology has been utilized to nondestructively image…

Science: Agriculture & Life Sciences, Education
Applications: Environment
Technology: Land

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Advanced Geomorphometric Approaches for Understanding Mountain Environments

October 05, 2017
3:00 pm - 4:00 pm
Eller O&M Bldg. Rm 807

The relationship between topographic form and surface process, though qualitatively well-­understood, is numerically poorly characterized. Identifying, mapping, and characterizing surface processes using machine visualization and automation demands that topographic forms be formalized in mathematical language and that relationships to the polygenetic heritage of geomorphic form be evaluated in a hierarchical, context-­sensitive manner.

Applications: Environment
Science: Education, Geosciences, Information Science
Technology: Land

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