Reuben Reyes

• Research Scientist at University of Oklahoma

In recent decades, multidimensional models became a common visualization technique in many disciplines, especially in statistical analyses, 3D web graphics, and topography map generation. While 3D modelling offers a unique benefit to represent trends and patterns of large data sets, its application in some sectors of meteorology and climatology has...

Since the Oklahoma Mesonet (the state’s automated mesoscale weather station network) was established in 1994, it has served a number of diverse groups and provided public services to foster weather preparedness, education, and public safety, while also supporting decision-making in agricultural production and wildland fire management. With 121 mon...

In the past decade, extreme and exceptional droughts have significantly impacted many economic sectors in the US, especially in California, Oklahoma, and Texas. The record drought of 2011–2014 affected almost 90% of Texas areas and 95% of Oklahoma state areas. In 2011 alone, around $1.6 billion in agricultural production were lost as a result of dr...

In recent decades, exponentially growing water demand, shrinking water resources, and recurring extreme droughts in many regions of the United States have compelled scientists and policymakers to rethink the future of water availability and water management. Since the 1950s, desalination has been applied in many US states as a viable solution to th...

This paper presents techniques and interactive models for multi-dimensional analyses and geospatial visualization in virtual globes based on three application examples: 1) earthquakes around the world, 2) groundwater well levels in Texas, and 3) geothermal subsurface heat indexes in Texas. While studies are known that represent multi-dimensional g...

In the United States, desalination has considerably expanded since the 1950s, reaching a daily production capacity of 2 BGD (billion gallons per day) with around 1336 operating plants as of 2013 (GWI, 2013). Despite this continuous growth, a steady increase in desalination investments and growing demand for water, research on geospatial representat...

In 2013, around 1336 desalination plants in the United States (US) provided purified water mainly to municipalities, the industry sector and for power generation. In 2013 alone, ∼200 million m(3) of water were desalinated; the amount that could satisfy annual municipal water consumption of more than 1.5 million people in the US. Desalination has pr...

Oklahoma Mesonet, the statewide weather monitoring system, has been taking high-frequency (every 5 minutes) rainfall observations across the state for over 20 years. Precipitation is among the most important indicators used to define droughts. It is also crucial for determining appropriate irrigation amounts in the agricultural sector, and thus mak...

Oklahoma Mesonet, the statewide weather monitoring system, has been taking high-frequency (every 5 minutes) rainfall observations across the state for over 20 years. Precipitation is among the most important indicators used to define droughts. It is also crucial for determining appropriate irrigation amounts in the agricultural sector, and thus mak...

Gigapixel size panoramas acquired using camera mounted robots provide very high resolution photographic imagery for visualizing geological features. In addition to collecting photographic imagery, outcrop geological surveys using terrestrial laser scanning systems (TLS) to collect range data and spatially image objects in three dimensional space ha...

Availability of highly accurate and spatially and spectrally dense data source have provided myriad of opportunities for advancing our understanding of how the earth surface forms evolved over time, as well as for predicting its future evolution in the event of large magnitude storms (such as hurricanes) or human-made disasters (such as the oil spi...

Scanning airborne lidar instruments are capable of rapidly collecting multi-gigabytes of digital terrain data. Sample density of the terrain is dependent upon acquisition parameters such as instrument pointing direction, laser firing repetition rate, aircraft elevation, and air speed. The Guadalupe and Delaware Mountains Airborne Lidar Project (GDA...

It has been documented that the Gulf of Mexico shoreline along the Texas upper coast is eroding at an average rate of 1.6 m/yr. (Paine et al., 2011). Relative sea-level rise, local circulation patterns, high intensity storms and lack of sediment supply combined with anthropogenic activities along developed areas of the barrier island may have contr...

Availability of highly accurate and spatially as well as spectrally dense topographic data provided us with myriad opportunities for advancing our understanding of how the coastal environment has evolved over time, as well as predicting its future evolution in the event of large magnitude storms (such as hurricanes) or human-made disasters such as...

Karstic aquifers can form very complex hydrogeological systems and 3-D mapping has been difficult, but Lidar, phased array sonar, and improved earth resistivity techniques show promise in this and in linking metadata to models. Zacatón, perhaps the Earth’s deepest cenote, has a sub-aquatic void space exceeding 7.5 x 106 cubic m3. It is the focus of...

Laser intensity reflection strength from ground-based lidar instruments are affected by several natural factors. External factors like humidity, barometric pressure, and airborne dust, can change the reflection intensity of lidar even over relatively short distances (less than 1 km). Instead of applying variable corrections for each external factor...

Carbonate formations in the Middle East of Permian-Triassic age, often collectively called the Khuff Formation, are among the region’s most prolific reservoirs. The best-known example is the world’s largest gas field, the South Pars and North Dome gas condensate field in the Persian Gulf, which is estimated to have over 1,300 Tcf of gas initially i...

Supervised automated lidar mapping of Khuff Formation carbonate outcrops in Oman enabled estimation of heterogeneity related to rock-type partitioning. Investigations revealed that Digital outcrop models (DOM) reduced uncertainty and improved reservoir characterization. A DOM model was defined by integration of interpreted outcrop observations with...

Computer applications used for producing and displaying digital 3D models are complex and require many hours of training to use. Because of this, we explored using different digital techniques to produce 3D physical models. These models can be used independently or can be used to enhance virtual models. The models we produced represent real geologi...

Outcrop-based modeling of reservoir analogous strata has long been a preferred technique utilized to understand sub-surface, sub-seismic and interwell heterogeneity in the petroleum industry. Historically, the methodologies employed focused collecting field data such as photographs, measured stratigraphic sections, gps, lidar, etc. and be compiled...

Shown in Figure 1 is the simulation of the energetics of the dissociation of a metastable molecule. The simulation was computed by Dr. Robert Wyatt, a Professor of Chemistry at The University of Texas at Austin. Dr. Wyatt’s simulation uses a model molecule composed of two fragments, A and B. Starting from the molecular state AB, the simulation comp...

Reconstructing the evolutionary history of diverse species is a basic goal of systematic biology and is essential to comparative biology. Phylogenies representing this history are constructed from the analyses of molecular or morphological data and used as tools for understanding the evolution of complex traits. Objectives of this research are to c...

We present a novel point-based rendering approach based on object-space point interpolation. We introduce the concept of a transformation-invariant covariance matrix of a set of points to efficiently determine splat sizes in a multiresolution hierarchy. ...

Titanium casting molds, made of stabilized and unstabilized zirconium oxide, were created using a combination of selective laser sintering (SLS) and colloidal infiltration. The mold material system was chosen for its thermal shock resistance and low reactivity with molten titanium. The starting material, stabilized zirconia powder mixed with a copo...

I was part of the engineering team that tested and produced the world's first 3D fax machine. This was done through a partnership between The University of Texas (UT) Mechanical Engineering Department and Scientific Measurements Systems (SMS) Inc. where I worked as a software engineer. At the time SMS had the world's best industrial X-ray Computed...

World's First 3D Fax Machine Old paper that was on WebSpace at The University of Texas at Austin about when SMS 3D scanned (x-ray CT) a car piston and sent it via phone modem to be reproduced at the Laboratory for Freeform Fabrication at UT Mechanical Engineering Dept.

Cavitation was examined in an Al-Mg solid-solution alloy deformed in tension at 400 degrees C under conditions providing solute-drag creep, which can produce tensile ductilities from 100% to over 300%, Two nondestructive evaluation techniques were employed to measure the extent of cavitation: ultra-high-resolution x-ray computed tomography and puls...

EXTANT marsupials are distinctive in their pattern of dental development1, in that only one tooth is replaced postnatally in each jaw. Interpretation of this pattern for marsupials ancestrally is disputed2-5, partly because ontogenetic data in fossils have been unobtainable. Here we present an ultra-high-resolution X-ray computed tomography (CT) st...