Earth Sciences Commons^™

Respon Pertumbuhan Bibit Nilam Aceh (Pogostemon Cablin Benth.) Klon Sidikalang Pada Media Tanam Subsoil Dengan Pemberian Pati Beras Dan Pupuk Hayati, Mira Ariyanti, Cucu Suherman, Intan Ratna Dewi Anjarsari, Dewi Santika

Jurnal Kultivasi

Media tanam berupa topsoil masih menjadi andalan untuk mendukung pertumbuhan tanaman nilam karena kandungan mineral dan bahan organiknya yang tinggi. Seiring dengan pemanfaatannya, ketersediaan topsoil semakin berkurang dan dirasa perlu untuk mencari alternatif lain yaitu dengan memanfaatkan subsoil. Peningkatan unsur hara dalam subsoil dilakukan dengan cara pemberian pupuk organik berupa pati beras dan pupuk hayati. Percobaan dilakukan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran Jatinangor pada Juni 2011- September 2011. Penelitian menggunakan rancangan acak kelompok terdiri dari 11 kombinasi perlakuan diulang tiga kali. Perlakuan percobaan meliputi top soil, sub soil + pupuk anorganik N 1.75 g, sub soil + 25 …

Will Lee-Side Cyclones Become More Intense In A Warming Climate?, Samuel Scoleri

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

The generation of lee-side low pressure systems, or lee-side cyclogenesis, commonly occurs in areas downwind of mountain ranges, such as eastern Colorado. Cyclones that form east of the Rockies tend to evolve into larger storm systems that travel eastward into the Great Plains region. Previous studies have found that diabatic heating, such as heat radiating away from Earth’s surface, has the ability to affect developing cyclones. The International Panel on Climate Change (IPCC) has reported that future climate scenarios all indicate an increase in surface temperature, which could prove to impact lee-side cyclogenesis. The purpose of my research is to …

Geological Framework Of The Continental Shelf Of South Carolina Winyah Bay: Paleodrainage, Transgressions And Essential Fish Habitat, Amanda Roach

Electronic Theses and Dissertations

A regional geophysical survey of the inner continental shelf off central South Carolina was completed on a cooperative cruise between NOAA and Coastal Carolina University in July 2015. An integrated mapping suite comprised of subbottom echosounder, side scan, multibeam and split beam sonars was used to define the regional geologic framework, including paleodrainage patterns across the shelf and to identify potential fish habitat locations that will provide additional inputs to a thematic habitat mapping routine developed by NOAA. Results from the thematic mapper characterization suggest that large-scale framework elements such as paleochannel networks may play a role in determining benthic …

Re–Os Isotope Geochronology Of The Shangbao Pyrite–Flourite Deposit In Southeastern Hunan, South China: Evidence For Multiple Mineralization Events And The Role Of Crust–Mantle Interaction In Polymetallic Deposits, Cheng Cheng Huang, Hai Feng Guo, Jie Li, Qiang Wang, Chunfu Zhang, Derek Wyman, Gong Jian Tang

Geosciences Faculty Publications

In South China, both crustal reworking and crust–mantle interaction were important geological processes during the Paleozoic and Mesozoic eras. However, the relationships between these two processes and metal mineralization are still unknown. Here we report rhenium and osmium isotopic data for pyrite grains from a pyrite deposit associated with a granite intrusion in the Shangbao area, southeastern Hunan Province (South China). Two pyrite samples, both containing many euhedral pyrite grains, were collected from the same locality, but the samples yield distinct ages. Six euhedral pyrite grains from one sample yield an isochronal age of 279 ± 12 Ma, with an …

High-Pressure Granulite Facies Overprinting During The Exhumation Of Eclogites In The Bangong-Nujiang Suture Zone, Central Tibet: Link To Flat-Slab Subduction, Xiu Zheng Zhang, Qiang Wang, Yong Sheng Dong, Chunfu Zhang, Qing Yun Li, Xiao Ping Xia, Wang Xu

Geosciences Faculty Publications

The geometric transformation of a descending plate, such as from steep to flat subduction in response to a change from normal to overthickened oceanic crust during subduction, is a common and important geological process at modern or fossil convergent margins. However, the links between this process and the metamorphic evolution of the exhumation of oceanic (ultra)high-pressure eclogites are poorly understood. Here we report detailed petrological, mineralogical, phase equilibria, and secondary ion mass spectrometry zircon and rutile U-Pb age data for the Dong Co eclogites at the western segment of the Bangong-Nujiang suture zone, central Tibet. Our data reveal that the …

Land Capability Assessment For Expanding Irrigated Horticulture Around Myalup, Department Of Agriculture And Food, Western Australia, Dafwa

Resource management technical reports

The Department of Primary Industry and Regional Development (DPIRD, formerly Department of Agriculture and Food, Western Australia), assessed the suitability of land for expanding irrigated horticulture around Myalup, Western Australia. The assessment builds upon existing soil-landscape mapping produced by van Gool and Kipling (1992), and Barnesby and Proulx-Nixon (2000). This report provides guidance to decision-makers and investors about areas with potential for irrigated horticulture.

The survey area for this assessment is east of Myalup, covering 37 800 hectares (ha). Johnston Road forms the northern boundary and the Brunswick River forms the southern boundary (Figure 1.1). The sandy soils of the …

Umphlett Qci Dec 2017, Natalie A. Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Drought

Drought Continues to Cause Impacts

Large Butterfly Migration Across the Plains

High Winds Down Corn Across Nebraska

3-Month Precipitation and Temperature Outlooks

Soil Moisture Conditions

An Evaluation Of Borehole Hydraulic Conductivity Equations And Field Determined Soil Water Characteristic Curves, Johnathan Dale Blanchard

Graduate Theses and Dissertations

The methods utilized to determine the hydraulic conductivity of compacted clay liners (CCLs) are of importance for safe guarding the environment from landfill leachate. Therefore, the methods utilized in the analysis of the Two Stage Borehole (TSB) test, as described in the ASTM D6391-11 (Method A, B, and C) standard, were evaluated. Data from hydraulic conductivity tests, as performed on three test pads, were utilized to review the ASTM D6391-11 equations. Additionally, two test pads were instrumented with volumetric water content and soil water matric potential sensors to facilitate the determination of field-obtained soil water characteristic curves (SWCCs) and hydraulic …

Pcor Partnership Atlas, Wesley D. Peck, Earl P. Battle, Megan M. Grove, Kyle A. Glazewski, Joyce M. Riske, Charles D. Gorecki, Edward N. Steadman, John A. Harju

EERC Maps and Infographics

The Plains CO₂ Reduction (PCOR) Partnership Atlas provides a regional profile of CO₂ sources and potential CO₂ storage locations across the PCOR Partnership region. The revised fifth edition provides an up-to-date look at PCOR Partnership activities, including additional regional characterization and updates on full-scale demonstration projects. Additional background information on carbon capture, utilization, and storage (CCUS) is included to give a better understanding of how CCUS addresses concerns about climate change while allowing future energy needs to be met.

Petrophysical Characterization Of The Jo Mill Submarine Fan Complex, Spraberry Trend, Midland Basin, Texas, Benjamin Frederic Rogers

Earth & Environmental Sciences Theses - Archive

Understanding and quantifying reservoir quality require a new suite of knowledge when approaching the nanometer sized pore-networks of unconventional reservoirs. These low porosity and permeability reservoirs have been produced in major basins all over the world, but characterizing their pore networks has been fairly recent in its application. One of the challenges of quantifying reservoir characteristics like porosity, pore size distribution, permeability, and tortuosity in unconventional reservoirs is the abundance of their nanometer-sized pore systems. Pore systems in these rocks tend to behave differently and with less predictability than the conventional reservoir. The Spraberry Formation in the Midland Basin of …

Characterization Of Nanopetrophysical Properties Of The Mancos “B”/ Prairie Canyon Member Of The Mancos Shale, Rio Blanco, Colorado, Scott Brian Leaseburge

Earth & Environmental Sciences Theses - Archive

Over the past decade hydrocarbon production from unconventional reservoirs has grown to become a significant source of North American domestic energy and will likely continue so for decades to come. However, production from unconventional reservoirs is plagued with low overall recovery and sharp declines in production. Low matrix permeability and poor pore connectively are significant factors limiting recovery and production. Research into the fluid flow characteristics of low permeability reservoirs can lead to extended initial production and greater overall recovery. Technically recoverable unconventional oil and gas resources in the Mancos Shale of the Piceance Basin are estimated to be 66.3 …

An Lntegrated Approach (Remote Sensing, Hydrogeology, Geotechnical, And Geoinformatics) To Assess And Monitor Fossil Aquifers And Associated Land Deformation Over The Arabian Peninsula, Abdullah Ghurmullah Saeed Othman

Dissertations

Deformational features such as subsidence, sinkholes, fissures, settling and cracks in buildings and structures, and earthquakes are being reported from many of the world’s arid lands, in areas where fossil aquifers are being excessively exploited. Using the Lower Mega Aquifer System (LMAS) in Arabia as a test site, I applied an integrated approach (remote sensing, geodesy, GIS, geology, hydrogeology, and geotechnical) to identify nature, intensity, spatial distribution, and factors controlling the observed deformation in the central (Al-Qassim and Ha'il regions; area: 16×10⁴ km²) and the northern (Wadi As-Sirhan Basin; area: ~10.9×10⁴ km²) Arabia. A four -fold approach was adopted to …

Petrophysical Properties Of The Woodford Formation In The Ardmore Basin In Oklahoma, U.S.A, Benjamin Ryan

Earth & Environmental Sciences Theses - Archive

A prolific source rock in Oklahoma, the Woodford Shale has sourced petroleum reservoirs for millions of years and produced oil and gas since 1939. Not until the shale boom of the early 2000’s was the full potential of the Woodford Shale, as a reservoir, realized. The focus of this research is to characterize three (the main ones) of the four petro-physically distinct zones within the Ardmore Woodford Shale in order to investigate the ideal zone for hydrocarbon extraction. The Woodford Shale is composed of tight, organic-rich, interbedded shale and chert beds deposited along a marine slope. Due to its tight …

Nano-Scale Petrophysical Studies Of The Gothic Shale Interval In The Paradox Basin, Colorado, U.S.A., Marvin L. Dunbar

Earth & Environmental Sciences Theses - Archive

Hydrocarbon production from shale has become a main energy source for the United States. Consequently, an increased knowledge of the petrophysical properties of shale such as porosity, permeability, tortuosity, and fluid-rock interactions (e.g., contact angle, imbibition) will improve production efficiency. Because of their minute size (nanoscale), the knowledge of pore structure (i.e., pore geometry and connectivity) has proven difficult to understand. Analyzing the pore size distribution and pore connectivity of Gothic Shale from selected locations in the Montezuma County of Colorado will lead to recommendations for greater oil production efficiency, fostering innovation into a thriving, environmentally safe, oil and gas …

Mapping Structural Deformation Associated With The Formation Of The Blue Ridge Salt Dome, Mason Phillip Bonner

Earth & Environmental Sciences Theses - Archive

Geologic mapping and subsurface imaging around salt has remained difficult. Seismic imaging is difficult near salt due to the large velocity contrasts between salt and the surrounding rocks, the steeply dipping salt and sediment interface, and the presence of pinching beds on the flanks of the dome; but when combined with well control from previously drilled wells on top and on the flanks of a salt dome, a more complete profile of the subsurface structure becomes possible. Previous work has produced models of salt dome formation and the surrounding structural deformation, and when compared to seismic data, show a good …

Coupled Geochemical And Nano-Petrophysical Study Of The Utica Play, Appalachian Basin, Ohio, U.S.A., Dillon Worley

Earth & Environmental Sciences Theses - Archive

Being more extensive than the Marcellus Play, the Utica Play covers from New York state in the north to northeastern Kentucky and Tennessee in the south. The Utica Play is a stacked play consisting of organic-rich mudstones from upper Ordovician units of Utica Shale, Point Pleasant, and the Logana member of the Lexington/Trenton Limestone. This study will focus on the pore structure and rock-fluid interaction and with relation to the rocks geochemical properties to assess the Utica Play. To achieve this research purpose, 7 core samples and 16 cuttings, with different maturities were collected from various wells, to study rocks …

Nanopetrophysics Characterization Of The Mancos Shale Formation In The San Juan Basin Of Northwestern New Mexico, U.S.A., Richard Kalteyer

Earth & Environmental Sciences Theses - Archive

The Mancos Shale of the San Juan Basin is no stranger to the drilling of oil and gas, but traditional exploration within the region has predominantly been limited to the use of conventional vertical wells. Due to the recent advances in drilling and completion technologies, a large focus of oil and gas exploration has shifted towards the development of unconventional reservoirs. Because of these significant breakthroughs, it comes as no surprise that an increased interest in further developing the Mancos Shale has taken place. However, like most unconventional plays, low porosity and extremely low permeability characterize the Mancos Shale. These …

Digitizing Dinosaur National Monument's Carnegie Quarry, Rebecca Esplin

Theses and Dissertations

The Carnegie Quarry in northeastern Utah is world-renowned for the dinosaur skeletons it has produced and for its in situ display of dinosaur bones. The specimens excavated at Carnegie Quarry are displayed and curated in 20 repositories, most in North America. Data on these specimens in the forms of notes, photographs, publications, field maps, and so on, are scattered in an array of formats and institutions. The primary goal of this thesis is to develop a database linking these data with a digital map (GIS system) to make them readily accessible. To this end, a relational database was created using …

Strengths And Limitations Of Nitrogen Rate Recommendations For Corn And Opportunities For Improvement, Thomas F. Morris, T. Scott Murrell, Douglas B. Beegle, James J. Camberato, Richard B. Ferguson, John H. Grove, Quirine Ketterings, Peter M. Kyveryga, Carrie A.M. Laboski, Joshua M. Mcgrath, John J. Meisinger, Jeff Melkonian, Bianca N. Moebius-Clune, Emerson D. Nafziger, Deanna Osmond, John E. Sawyer, Peter C. Scharf, Walter Smith, John T. Spargo, Harold M. Van Es, Haishun Yang

Plant and Soil Sciences Faculty Publications

Nitrogen fi xation by the Haber–Bosch process has more than doubled the amount of fi xed N on Earth, significantly influencing the global N cycle. Much of this fi xed N is made into N fertilizer that is used to produce nearly half of the world’s food. Too much of the N fertilizer pollutes air and water when it is lost from agroecosystems through volatilization, denitrification, leaching, and runoff. Most of the N fertilizer used in the United States is applied to corn (Zea mays L.), and the profitability and environmental footprint of corn production is directly tied to N …

Combined Assimilation Of Satellite Precipitation And Soil Moisture: A Case Study Using Trmm And Smos Data, Liao-Fan Lin, Ardeshir M. Ebtehaj, Alejandro N. Flores, Satish Bastola, Rafael L. Bras

Geosciences Faculty Publications and Presentations

This paper presents a framework that enables simultaneous assimilation of satellite precipitation and soil moisture observations into the coupled Weather Research and Forecasting (WRF) and Noah land surface model through variational approaches. The authors tested the framework by assimilating precipitation data from the Tropical Rainfall Measuring Mission (TRMM) and soil moisture data from the Soil Moisture Ocean Salinity (SMOS) satellite. The results show that assimilation of both TRMM and SMOS data can effectively improve the forecast skills of precipitation, top 10-cm soil moisture, and 2-m temperature and specific humidity. Within a 2-day time window, impacts of precipitation data assimilation on …

Seeing Prehistory Through New Lenses: Using Geophysical And Statistical Analysis To Identify Fresh Perspectives Of A 15th Century Mandan Occupation, Amber Marie Mitchum

Graduate Theses and Dissertations

Great Plains prehistoric research has evolved over the course of a century, with many sites like Huff Village (32MO11) in North Dakota recently coming back to the forefront of discussion through new technological applications. Through a majority of its studies and excavations, Huff Village appeared to endure as the final stage in the Middle Missouri tradition. Long thought to reflect only systematically placed long-rectangular structure types of its Middle Missouri predecessors, recent magnetic gradiometry and topographic mapping data revealed circular structure types that deviated from long-held traditions, highlighting new associations with Coalescent groups. A compact system for food capacity was …

Understanding Cigarette Butt Littering Behavior On A Public Beach: A Case Study Of Jekyll Island, Maranda R. Miller, Mark E. Burbach

Conservation and Survey Division: Faculty and Staff Publications

Conservation of natural resources and promotion of family-friendly tourism activities are vital to Jekyll Island. As it is stated in the Jekyll Island Authority (JIA) Master Plan “Jekyll Island is a unique, state-owned barrier island that balances conserving and preserving natural, historic, and cultural resources with providing accessible, affordable recreation, vacation, and education opportunities for the people of Georgia and beyond” (Jekyll Island Authority, 2014b, p. 4). The JIA has reported approximately 1 million people visit the island annually (Jekyll Island Authority, 2015). As such, tourism is instrumental to Jekyll Island’s economy, and that tourism contributes to the overall economy …

Longitudinal Thermal And Solute Dynamics In Regulated Rivers, Muhammad Rezaul Haider

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dam releases increase river stage and can reverse groundwater movement into and out of the river. As the flood, thermal, and solute waves travel downstream in a regulated river, the size of the waves is anticipated to be affected both by river processes and exchanges with near river groundwater. This study established a modeling framework to quantify the influences of the groundwater exchanges on the temperatures and solute concentration dynamics along regulated rivers. The wave properties, volume of exchanges, conservative solute mass exchanges, and heat energy exchanges were calculated as a function of time and distance downstream. Results show that …

Paleozoic Sandstones In The Tri-State Region, Southern Ozarks: Tectono-Stratigraphic Sequence Development And Compositional Evolution, The Source And Delivery Conundrum, And The Regional Tectonic History, Elvis Chekwube Bello

Graduate Theses and Dissertations

The Paleozoic stratigraphic record of the Ozark Region, southern midcontinent has been divided into at least 33 formations, with the most significant thickness of 9692 feet preserved in northwest Arkansas. The potential thickness would have been much greater, but epeirogenic movements and sea-level rise and fall produced regional surfaces of erosion reducing the record. That interplay between tectonics (epeirogenic movements) and eustatic change (transgressive-regressive cycles) preserved in the Ozark sedimentary history provides the basis for recognition of five distinct, but related, tectonostratigraphic units designated TS 1 through TS 5: Late Precambrian-Middle Cambrian (TS 1), Late Cambrian-Earliest Ordovician (TS 2), Early …

Agronomic Management Practice Effects On Particulate Organic Matter And Infiltration In A Wheat-Soybean, Double-Crop System In Eastern Arkansas, Johan Desrochers

Graduate Theses and Dissertations

Improving the understanding of conventional and alternative management practices and their interactions on aggregate-derived particulate organic matter (POM) fractions and soil hydraulic properties, particularly infiltration, is instrumental to soil and groundwater management and long-term sustainability in the Lower Mississippi River Delta (LMRD) region of eastern Arkansas. The objective of this long-term wheat (Triticum aestivum L.)-soybean (Glycine max [L.] Merr.), double-crop (WSDC) field study in a silt-loam soil (Glossaquic Fraglossudalf) in the LMRD region of eastern Arkansas was to evaluate the effects of conventional and alternative management practices, including wheat-residue level, residue burning, tillage and irrigation, on i) POM fractions and …

Sulfur Isotope Variations In The Elk Creek Carbonatite Complex, Southeastern Nebraska, Usa, Emily Campbell

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The Elk Creek Carbonatite Complex (ECCC) comprises eight different units of carbonatite and silicate rocks, including a magnetite-dolomite carbonatite that hosts the largest niobium deposit in the United States. This study focused on interpreting the first set of sulfur isotopes from this system to decipher between magmatic and secondary processes. Using sulfur isotope variations I was able to discriminate between hypogene and supergene mineralization, and measure (1) formation temperatures (2) possible sulfur source (3) degassing effects on isotopic composition, and (4) post-magmatic alteration. The groundwork for mapping and interpreting iron oxide alteration is also laid out in this thesis.

Hypogene …

Use Of Long Term Weather Data And Spatially Delineated Field Attributes To Predict Water And Energy Conservation From Variable Rate Irrigation, Sahil Sharma

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

The declining levels of the Ogallala aquifer calls for more judicious use of water. Studies have shown that VRI has the potential for water savings. But adoption of VRI is still very low. The major reason is lack of information on the returns from the VRI systems and its feasibility in different fields. Also, a quantification of the required reduction in prices of VRI is necessary. So, an economic return analysis of VRI strategies was done to compare it to uniform irrigation management (UIM) using a water balance model based on long term weather data and field properties for a …

An Integrated Evaluation Of Potential Petroleum Systems Of The Southern Carnarvon Basin, Western Australia, James E. Hobbs

Earth & Environmental Sciences Theses - Archive

The Southern Carnarvon Basin is an elongate basin in Western Australia covering approximately 200,000km2. There are two main regions: a western platform (Gascoyne Platform) with a Cambrian to Lower Carboniferous succession that has mostly flat-lying Cretaceous-Cenozoic cover; and an eastern set of half-grabens (Merlinleigh Sub-basin) forming a single mid-Carboniferous – Permian depocenter, now separated by a gneissic basement of the Carrandibby Inlier, which is considered to be a part of the Merlinleigh Sub-basin. The two regions have little in common except for sharing a Devonian to Lower Carboniferous succession and both have predominantly Paleozoic infill. Tectonics processes recorded in the …

Provenance Analysis Of The Grover Gravel Using Detrital Zircon Geochronology, Petrology And Heavy Mineral Analysis, Grant Spoering

Graduate Theses/Dissertations

The Grover Gravel in the St. Louis, Missouri area contains a mix of chert, quartzite, jasper, and ironstone in clast sizes ranging up to 60 cm. The gravel varies in thickness from a veneer to over 30 feet and rests on upland surfaces at elevations sometimes exceeding 300 feet above the floors of major valleys. A pre-Pleistocene age generally has been proposed or assumed for the gravel, which classically has been interpreted to be a meandering-stream deposit atop an extensive flat upland surface, which was subsequently eroded and dissected by rejuvenated streams. However, large quartzite boulders in the gravel also …

Characterizing Coseismic Ionospheric Disturbance For Surface-Rupturing Earthquakes, Rebekah Faith Lee

Boise State University Theses and Dissertations

Coseismic ionospheric disturbances (CID) are commonly identified using global navigation space system (GNSS) satellites. Little research, however, has focused on using total electron content (TEC) observations to characterize acoustic sources on Earth's surface. For this thesis, I investigate the applicability of an analytical method to invert the TEC for the acoustic wave. The inversion is based on the modeling of a transfer function. Deconvolving the TEC by the transfer function gives the acoustic wave. Inverting for the acoustic wave in this way would remove phase differences in the TEC created by atmospheric-ionospheric coupling. I test the assumption in the model …