Geography Syllabus
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Infiltration from the Pedon to Global Grid Scales: an Overview and Outlook for Land Surface Modeling
Published June 24, 2019 Reviews and Analyses Core Ideas Infiltration from the Pedon to Global • Land surface models (LSMs) show Grid Scales: An Overview and Outlook a large variety in describing and upscaling infiltration. for Land Surface Modeling • Soil structural effects on infiltration in LSMs are mostly neglected. Harry Vereecken, Lutz Weihermüller, Shmuel Assouline, • New soil databases may help to Jirka Šimůnek, Anne Verhoef, Michael Herbst, Nicole Archer, parameterize infiltration processes Binayak Mohanty, Carsten Montzka, Jan Vanderborght, in LSMs. Gianpaolo Balsamo, Michel Bechtold, Aaron Boone, Sarah Chadburn, Matthias Cuntz, Bertrand Decharme, Received 22 Oct. 2018. Agnès Ducharne, Michael Ek, Sebastien Garrigues, Accepted 16 Feb. 2019. Klaus Goergen, Joachim Ingwersen, Stefan Kollet, David M. Lawrence, Qian Li, Dani Or, Sean Swenson, Citation: Vereecken, H., L. Weihermüller, S. Philipp de Vrese, Robert Walko, Yihua Wu, Assouline, J. Šimůnek, A. Verhoef, M. Herbst, N. Archer, B. Mohanty, C. Montzka, J. Vander- and Yongkang Xue borght, G. Balsamo, M. Bechtold, A. Boone, S. Chadburn, M. Cuntz, B. Decharme, A. Infiltration in soils is a key process that partitions precipitation at the land sur- Ducharne, M. Ek, S. Garrigues, K. Goergen, J. face into surface runoff and water that enters the soil profile. We reviewed the Ingwersen, S. Kollet, D.M. Lawrence, Q. Li, D. basic principles of water infiltration in soils and we analyzed approaches com- Or, S. Swenson, P. de Vrese, R. Walko, Y. Wu, and Y. Xue. 2019. Infiltration from the pedon monly used in land surface models (LSMs) to quantify infiltration as well as its to global grid scales: An overview and out- numerical implementation and sensitivity to model parameters. -
DOGAMI GMS-5, Geology of the Powers Quadrangle, Oregon
o thickness of about 1,500 feet. The southern outcrop terminates against the Sixes River fault, indicat Intermediate intrusive rocks, mainly diorite and quartz diorite, intrude the Gal ice Formation ing that the last movement involved down-faulting along the north side. south of the Sixes River fault. One stock, covering nearly 2 square miles, is bisected by Benson Creek, Megafossils are present in some of the bedded basal sandstone. Forominifera examined by W. W. and numerous small dikes are present nearby. One of the largest dikes extends from Rusty Creek eastward Rau (Baldwin, 1965) collected a short distance west of the mouth of Big Creek along the Sixes River were through the Middle Fork of the Sixes River into Salman Mountain. These intrusive racks are described by assigned a middle Eocene age . A middle Eocene microfauna in beds of similar age near Powers was ex Lund and Baldwin ( 1969) and are correlated with the Pearse Peak diorite of Koch ( 1966). The Pearse amined by Thoms (Born, 1963), and another outcrop along Fourmile Creek to the north contained a mid Peak body, which intrudes the Ga lice Formation along Elk River to the south, is described by Koch (1966, GEOLOGICAL MAP SERIES dle Eocene molluscan fauna (Allen and Baldwin, 1944). Phillips (1968) also collected o middle Eocene p. 51-52) . fauna in middle Umpqua strata along Fourmile Creek, o short distance north of the mapped area. Lode gold deposits reported by Brooks and Ramp ( 1968) in the South Fork of the Sixes drainage and on Rusty Butte are apparently associated with the dioritic intrusive bodies. -
Unmanned Aerial System Nadir Reflectance and MODIS Nadir BRDF
The Cryosphere, 11, 1575–1589, 2017 https://doi.org/10.5194/tc-11-1575-2017 © Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. Unmanned aerial system nadir reflectance and MODIS nadir BRDF-adjusted surface reflectances intercompared over Greenland John Faulkner Burkhart1,2, Arve Kylling3, Crystal B. Schaaf4, Zhuosen Wang5,6, Wiley Bogren7, Rune Storvold8, Stian Solbø8, Christina A. Pedersen9, and Sebastian Gerland9 1Department of Geosciences, University of Oslo, Oslo, Norway 2University of California, Merced, CA, USA 3Norwegian Institute for Air Research, Kjeller, Norway 4School for the Environment, University of Massachusetts Boston, Boston, MA, USA 5NASA Goddard Space Flight Center, Greenbelt, MD, USA 6Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA 7U.S. Geological Survey, Flagstaff, AZ, USA 8Norut-Northern Research Institute, Tromsø, Norway 9Norwegian Polar Institute, Fram Centre, Tromsø, Norway Correspondence to: John Faulkner Burkhart ([email protected]) Received: 12 November 2016 – Discussion started: 15 December 2016 Revised: 17 May 2017 – Accepted: 18 May 2017 – Published: 4 July 2017 Abstract. Albedo is a fundamental parameter in earth sci- data demonstrate potentially large sub-pixel variability of ences, and many analyses utilize the Moderate Resolu- MODIS reflectance products and the potential to explore this tion Imaging Spectroradiometer (MODIS) bidirectional re- variability using the UAS as a platform. It is also found that, flectance distribution function (BRDF)/albedo (MCD43) al- even at the low elevations flown typically by a UAS, re- gorithms. While derivative albedo products have been eval- flectance measurements may be influenced by haze if present uated over Greenland, we present a novel, direct compar- at and/or below the flight altitude of the UAS. -
Bowman Expedition of the American Geographical Society
$5.00 VOLUME XXVI, NUMBER 1 FEBRUARY 2006 N O TES from T HE A MERICAN G EOGRAPHICAL S OCIETY UNDERMINING AMERICA: AGS CONDUCTS FIELDWORK THE OPIATE OF MILITARY DOMINANCE IN MEXICO By Brad Allenby By Jerome E. Dobson AGS Councilor, member of AGS Writers Circle President,The American Geographical Society It seems self-evident to most Professor of Geography, University of Kansas people that national power is What’s AGS done lately? Last issue I predominantly a matter of military wrote about the landmine project. This capability. Certainly, military power time I’ll write about foreign fieldwork. was critical in a world characterized by First, some background. colonialism, where direct control of In a recent column (Ubique, resources was so important to national Volume XXV, Number 1, March 2005), I power. Today, however, advanced deplored the cost of geographic economies increasingly rely on global financial and ignorance, measured in conflict. That information networks and highly flexible economic and was not a political statement because the political institutions. Accordingly, the key to obtaining malady itself is universal, infecting all parties, nations, and and keeping superpower status increasingly is not just levels of society from voters to politicians. military, but balance among five core constituents: In America, geography has been out of public favor so economic, science and technology capability, military, long that we cannot produce enough graduates to fill even institutional, and cultural. the most essential posts where geographers are sorely Until recently the United States has been the one needed in government. The bitter experience of war in power that has appeared to be globally competent in all Afghanistan and Iraq, however, has produced a glimmer of five categories. -
Chapter 1 – a Geographer's World
Chapter 1 – A Geographer’s World Section Notes Video Studying Geography Impact of Studying Geography Geography Themes and Essential Elements The Branches of Geography Maps High School Soccer Preparation The United States Close-up The Five Themes of Geography Images Quick Facts What is Geography? Chapter 1 Visual Summary Looking at the World Geography Defined Meteorologist at Work Studying Geography The Big Idea The study of geography and the use of geographic tools helps us view the world in new ways. Main Ideas • Geography is the study of the world, its people, and the landscapes they create. • Geographers look at the world in many different ways. • Maps and other tools help geographers study the planet. Main Idea 1: Geography is the study of the world, its people, and the landscapes they create. • Geography is the study of the world, its people, and the landscapes they create – A place’s landscape is all the human and physical features that make it unique. • Geography as a science – Geographers ask questions about how the world works. – Geographers gather and interpret data. • Geography as a social science, a field that studies people and the relationships among them – Geographers ask questions about people and their lives. – Geographers visit places and talk to the people who live there to learn about lives and communities. Main Idea 2: Geographers look at the world in many different ways. Local Level Regional Level Global Level • Geographers ask • A region is a part • Geographers ask questions to figure of the world that how events and out why people live has one or more ideas from one and work the way common features region of the world they do. -
Fast Hydraulic Erosion Simulation and Visualization on GPU
Fast Hydraulic Erosion Simulation and Visualization on GPU Xing Mei Philippe Decaudin Bao-Gang Hu CASIA-LIAMA/NLPR, Beijing, China INRIA-Evasion, Grenoble, France CASIA-LIAMA/NLPR, Beijing, China xmei@(NOSPAM)nlpr.ia.ac.cn & CASIA-LIAMA, Beijing, China hubg@(NOSPAM)nlpr.ia.ac.cn philippe.decaudin@(NOSPAM)imag.fr Figure 1. Illustration of our erosion simulation on a ”PG”-shaped mountain. (a) The initial terrain. (b) Terrain is being eroded by rainfall. The dissolved soil (denoted by green color) is transported by the water flow (blue). (c) The eroded terrain and the deposited sediment (red) after the rainfall and during the evaporation. Abstract 1. Introduction Natural mountains and valleys are gradually eroded by Natural terrains exhibit a lot of complex shapes such rainfall and river flows. Physically-based modeling of this as valleys, ridges, sand ripples and crests. These geomor- complex phenomenon is a major concern in producing re- phological structures are mostly determined by the erosion alistic synthesized terrains. However, despite some recent phenomenon: soil is dissolved and transported by the wa- improvements, existing algorithms are still computationally ter flow, sand is carried away by the wind, and stones are expensive, leading to a time-consuming process fairly im- decomposed into small blocks by the temperature. Erosion practical for terrain designers and 3D artists. simulation has always been an important research topic in landscape design [5, 8], since it greatly enhances the realism In this paper, we present a new method to model the hy- of the synthesized terrains. draulic erosion phenomenon which runs at interactive rates We focus on hydraulic erosion, which is the predominant on today’s computers. -
The Autogenic Landform Change in a Fluvial-Aeolian Interacting Field
Fifth Intl Planetary Dunes Workshop 2017 (LPI Contrib. No. 1961) 3001.pdf IN DYNAMIC EQUILIBRIUM: THE AUTOGENIC LANDFORM CHANGE IN A FLUVIAL-AEOLIAN INTERACTING FIELD. B. Liu 1 and T. Coulthard 2, 1 College of the Environment and Ecology, Xiamen Univer- sity, Xiamen, Xiang’an South Road, 361102 China, [email protected], 2 School of Environmental Sciences, University of Hull, Cottingham Road, HU6 7SR United Kingdom, [email protected]. Aeolian and fluvial systems are usually studied in- doubtedly due to the influence of climatic change, tec- dependently which leaves many questions unresolved tonics or even human activities. Nevertheless, this as- in terms of how they interact. When sand dunes and sumption could has prevented researchers from consid- rivers coincide with each other, the interaction of sedi- ering that large scale of landform instability may be ment transport fluxes between the two systems may inherent and driven by internal forces in the system in lead to change in either or both systems therefore can dynamic equilibrium. Hence, a sudden landscape significantly change surface morphology. An inventory change may be inherent in the normal development of a is presented from 230 globally distributed study sites fluvial-aeolian interacting field and that a change in an from locations where fluvial and aeolian systems inter- external variable is not always required for a signifi- act with each other. At each location key attributes, cant geomorphic event to occur but depends on the wind/river direction, net sand transport direction, dune system intrinsic geomorphic threshold. If this geo- morphology, river channel pattern were identified and morphic threshold condition can be identified, not only relationships between each factors were analyzed. -
Part 629 – Glossary of Landform and Geologic Terms
Title 430 – National Soil Survey Handbook Part 629 – Glossary of Landform and Geologic Terms Subpart A – General Information 629.0 Definition and Purpose This glossary provides the NCSS soil survey program, soil scientists, and natural resource specialists with landform, geologic, and related terms and their definitions to— (1) Improve soil landscape description with a standard, single source landform and geologic glossary. (2) Enhance geomorphic content and clarity of soil map unit descriptions by use of accurate, defined terms. (3) Establish consistent geomorphic term usage in soil science and the National Cooperative Soil Survey (NCSS). (4) Provide standard geomorphic definitions for databases and soil survey technical publications. (5) Train soil scientists and related professionals in soils as landscape and geomorphic entities. 629.1 Responsibilities This glossary serves as the official NCSS reference for landform, geologic, and related terms. The staff of the National Soil Survey Center, located in Lincoln, NE, is responsible for maintaining and updating this glossary. Soil Science Division staff and NCSS participants are encouraged to propose additions and changes to the glossary for use in pedon descriptions, soil map unit descriptions, and soil survey publications. The Glossary of Geology (GG, 2005) serves as a major source for many glossary terms. The American Geologic Institute (AGI) granted the USDA Natural Resources Conservation Service (formerly the Soil Conservation Service) permission (in letters dated September 11, 1985, and September 22, 1993) to use existing definitions. Sources of, and modifications to, original definitions are explained immediately below. 629.2 Definitions A. Reference Codes Sources from which definitions were taken, whole or in part, are identified by a code (e.g., GG) following each definition. -
Landform Geography (4 Credit Hours) Course Description: Hydrolo
GEOGRAPHY 201 LANDFORM GEOGRAPHY BULLETIN INFORMATION GEOG 201 - Landform Geography (4 credit hours) Course Description: Hydrology, soil science, and interpretation of physical features formed by water, wind, and ice, with emphasis on environmental change Note: Three hours of lecture and one two-hour laboratory per week. Instructor Contact Information: SAMPLE COURSE OVERVIEW This course is an introduction to landforms; that is, the physical features on the Earth's surface such as valleys, hill-slopes, beaches, sand dunes, and stream channels. Students will learn, from the study of landforms, of past environmental conditions, how they have changed, and the processes involved, including human actions and natural agents. Students also will learn about soils, hydrology, and processes of landform creation by water, wind, ice, and gravity. ITEMIZED LEARNING OUTCOMES Upon successful completion of Geography 201 students will be able to: 1. Explain scientific methods and terminology including hypothesis formulation and testing, experimental design, the method of multiple working hypotheses, and opposite concepts such as inductive vs. deductive reasoning and empirical vs. theoretical methods. 2. Interpret topographic maps and geospatial data such as remote sensing and Geographic Information Systems (GIS). 3. Collect and analyze laboratory and field measurement data to describe Earth materials, soil properties, sediment grain-size distributions, and landform features. 4. Evaluate the merits of various theories of landscape change, such as catastrophism, uniformitarianism, and neo-catastrophism, and to explain how landforms are created and change over various time scales. 5. Comprehend the environmental history of Earth’s surface from the recent geologic past to present with an emphasis on Quaternary processes and changes (the Quaternary is the current geological period that began ~2 million years ago), and interactions between climate, humans, and environmental response during and after the Neolithic period of human culture. -
Editorial. Sports Geography : an Overview
Belgeo Revue belge de géographie 2 | 2008 Sports geography Editorial. Sports Geography : an overview John Bale and Trudo Dejonghe Electronic version URL: https://journals.openedition.org/belgeo/10253 DOI: 10.4000/belgeo.10253 ISSN: 2294-9135 Publisher: National Committee of Geography of Belgium, Société Royale Belge de Géographie Printed version Date of publication: 30 June 2008 Number of pages: 157-166 ISSN: 1377-2368 Electronic reference John Bale and Trudo Dejonghe, “Editorial. Sports Geography : an overview”, Belgeo [Online], 2 | 2008, Online since 20 October 2013, connection on 21 September 2021. URL: http:// journals.openedition.org/belgeo/10253 ; DOI: https://doi.org/10.4000/belgeo.10253 This text was automatically generated on 21 September 2021. Belgeo est mis à disposition selon les termes de la licence Creative Commons Attribution 4.0 International. Editorial. Sports Geography : an overview 1 Editorial. Sports Geography : an overview John Bale and Trudo Dejonghe 1 Geographical studies of sports are not new. The first time that sport was mentioned in a geographical publication was in 1879 when Elisée Réclus said something about cricket in his Géographie Universelle. In 1919 Hilderbrand published in the National Geographic Magazine The Geography of Games. A few years later in 1927, the German geographer Hettner (quoted in Elkins, 1989) suggested that among other things, the variations in health, hygiene, recreation and education could be “apprehended as manifestations of the nature of the land”. This comment by Hettner, and earlier work by the American geographers Huntington and Semple, could also be included among environmental determinists for whom body-cultural practices were seen as perfectly legitimate fields of study (Bale, 2002). -
Greening Wildlife Documentary’, in Libby Lester and Brett Hutchins (Eds) Environmental Conflict and the Media, New York: Peter Lang
Morgan Richards (forthcoming 2013) ‘Greening Wildlife Documentary’, in Libby Lester and Brett Hutchins (eds) Environmental Conflict and the Media, New York: Peter Lang. GREENING WILDLIFE DOCUMENTARY Morgan Richards The loss of wilderness is a truth so sad, so overwhelming that, to reflect reality, it would need to be the subject of every wildlife film. That, of course, would be neither entertaining nor ultimately dramatic. So it seems that as filmmakers we are doomed either to fail our audience or fail our cause. — Stephen Mills (1997) Five years before the BBC’s Frozen Planet was first broadcast in 2011, Sir David Attenborough publically announced his belief in human-induced global warming. “My message is that the world is warming, and that it’s our fault,” he declared on the BBC’s Ten O’Clock News in May 2006. This was the first statement, both in the media and in his numerous wildlife series, in which he didn’t hedge his opinion, choosing to focus on slowly accruing scientific data rather than ruling definitively on the causes and likely environmental impacts of climate change. Frozen Planet, a seven-part landmark documentary series, produced by the BBC Natural History Unit and largely co-financed by the Discovery Channel, was heralded by many as Attenborough’s definitive take on climate change. It followed a string of big budget, multipart wildlife documentaries, known in the industry as landmarks1, which broke with convention to incorporate narratives on complex environmental issues such as habitat destruction, species extinction and atmospheric pollution. David Attenborough’s The State of the Planet (2000), a smaller three-part series, was the first wildlife documentary to deal comprehensively with environmental issues on a global scale. -
Volcanology © Springer-Verlag 1992
Bull Volcanol (1992) 55:97-109 Volcanology © Springer-Verlag 1992 The caldera of Volcan Fernandina: a remote sensing study of its structure and recent activity Scott K Rowland and Duncan C Munro Planetary Geosciences, Geology and Geophysics Department, University of Hawaii at Manoa, Honolulu, Hawaii 96822 Received January 4, 1992/Accepted July 9, 1992 Abstract. Air photographs taken in 1946, 1960, and Introduction 1982, together with SPOT HVR-1 images obtained in April and October of 1988, are used to characterize re The Galapagos volcanoes have been the subject of nu cent activity in and around the caldera of Fernandina merous overview studies (e.g. Richards 1962; McBirney Volcano, West Galapagos Islands. The eruptive and col and Williams 1969; Nordlie 1973; Simkin 1984), and lapse events during this time span appear to be distri some detailed work. The geographic isolation and diffi buted in a NW-SE band across the summit and caldera. cult working conditions of these volcanoes mean that re On the flanks of the volcano, subtle topographic ridges mote-sensing studies (e.g. Chadwick and Howard 1991; indicate that this is a long-term preferred orientation of Munro et al. 1991; Munro 1992), although unable to re extra-caldera activity as well (although radial and ar place the detail available to ground observers, offer a cuate fissures are found on all sectors). The caldera is synoptic viewpoint that is useful for making inferences formed from the coalescence of multiple collapse fea about structures and processes. Both aerial photographs tures that are also distributed along a NW-SE direction, (1946, 1960, and 1982) and SPOT HRV-1 images (1988) and these give the caldera its elongate and scalloped out have been used in the present study and they provide a line.