Forensic Geoscience: Applications of Geology, Geomorphology and Geophysics to Criminal Investigations
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Wyoming an Interdisciplinary Forensic Science Unit Developed by the UW Science Posse
CSI: Wyoming An interdisciplinary forensic science unit developed by the UW Science Posse. Question: Who did it? From the Bullet to the Bear (and Tree!) Developed by: Sabrina L. Cales 4/6/08 1:58:04 PM Grade Level: 7-8th Estimated Time: ~1 hour (omit clue ii) Topics Covered: Physics, Ballistics Standards and Benchmarks: 1. CONCEPTS AND PROCESSES In the context of unifying concepts and processes, students develop an understanding of scientific content through inquiry. Science is a dynamic process; concepts and content are best learned through inquiry and investigation. EARTH, SPACE, AND PHYSICAL SYSTEMS 10. The Structure and Properties of Matter: Students identify characteristic properties of matter such as density, solubility, and boiling point and understand that elements are the basic components of matter. 11. Physical and Chemical Changes in Matter: Students evaluate chemical and physical changes, recognizing that chemical change forms compounds with different properties and that physical change alters the appearance but not the composition of a substance. 12. Forms and Uses of Energy: Students investigate energy as a property of substances in a variety of forms with a range of uses. 13. The Conservation of Matter and Energy: Students identify supporting evidence to explain conservation of matter and energy, indicating that matter or energy cannot be created or destroyed but is transferred from one object to another. 14. Effects of Motions and Forces: Students describe motion of an object by position, direction, and speed, and identify the effects of force and inertia on an object. 2. SCIENCE AS INQUIRY Students demonstrate knowledge, skills, and habits of mind necessary to safely perform scientific inquiry. -
Geomorphic Classification of Rivers
9.36 Geomorphic Classification of Rivers JM Buffington, U.S. Forest Service, Boise, ID, USA DR Montgomery, University of Washington, Seattle, WA, USA Published by Elsevier Inc. 9.36.1 Introduction 730 9.36.2 Purpose of Classification 730 9.36.3 Types of Channel Classification 731 9.36.3.1 Stream Order 731 9.36.3.2 Process Domains 732 9.36.3.3 Channel Pattern 732 9.36.3.4 Channel–Floodplain Interactions 735 9.36.3.5 Bed Material and Mobility 737 9.36.3.6 Channel Units 739 9.36.3.7 Hierarchical Classifications 739 9.36.3.8 Statistical Classifications 745 9.36.4 Use and Compatibility of Channel Classifications 745 9.36.5 The Rise and Fall of Classifications: Why Are Some Channel Classifications More Used Than Others? 747 9.36.6 Future Needs and Directions 753 9.36.6.1 Standardization and Sample Size 753 9.36.6.2 Remote Sensing 754 9.36.7 Conclusion 755 Acknowledgements 756 References 756 Appendix 762 9.36.1 Introduction 9.36.2 Purpose of Classification Over the last several decades, environmental legislation and a A basic tenet in geomorphology is that ‘form implies process.’As growing awareness of historical human disturbance to rivers such, numerous geomorphic classifications have been de- worldwide (Schumm, 1977; Collins et al., 2003; Surian and veloped for landscapes (Davis, 1899), hillslopes (Varnes, 1958), Rinaldi, 2003; Nilsson et al., 2005; Chin, 2006; Walter and and rivers (Section 9.36.3). The form–process paradigm is a Merritts, 2008) have fostered unprecedented collaboration potentially powerful tool for conducting quantitative geo- among scientists, land managers, and stakeholders to better morphic investigations. -
Forensic Geology
Manuscript for inclusion in the Encyclopedia of Geology, Edited by R.C. Selley, L.R.M Cocks and I.R Plimer, Elsevier, Amsterdam (2004) FORENSIC GEOLOGY K. Pye. Department of Geology, Royal Holloway University of London, Egham, Surrey TW20 0EW, UK Introduction Forensic geology is concerned with the application of geological data and techniques in relation to issues which may come before a court of law. It is closely related to environmental forensics, forensic engineering and forensic archaeology. Environmental forensics is somewhat broader in scope than forensic geology and involves a wider range of environmental data, knowledge and expertise. It frequently involves investigations of environmental problems such as water and air pollution. Forensic engineering also overlaps with environmental forensics and is typically concerned with such issues as ground stability, the failure of buildings and other engineering structures, flooding, wind damage, fires and explosions. All sub-disciplines of the geosciences have potential forensic applications, but sedimentology, mineralogy, petrology, geochemistry, palaeontology and geophysics have so far made the greatest contributions. Shallow geophysical prospecting methods have been widely used by forensic archaeologists and others to locate and characterize clandestine graves and buried objects such as drugs and weapons. However, probably the most widely recognized application of forensic geology is the use of geological materials as trace evidence which can be of value in linking a suspect to a crime scene. In the wider forensic and legal literature, sediment, soil, dust and rock fragments have often been grouped together under the loose term ‘soil’ evidence. 1 Some of the earliest users of geological and soil evidence were in fact not geologists. -
Ballistics: Concepts and Connections with Applied Physics
Orissa Journal of Physics © Orissa Physical Society Vol. 22, No.1 ISSN 0974-8202 February 2015 pp. 27-38 Ballistics: Concepts and Connections with Applied Physics K K CHAND1 and M C ADHIKARY2 1Scientist, Proof & Experimental Es tablishment (PXE), DRDO, Chandipur, Balasore 1 emails: [email protected] 2Reader in Applied Physics and Ballistics, FM University, Vyasavihar, Balasore, 2 [email protected] Received : 1.11.2014 ; Accepted : 10.1.2015 Abstract : Ballistics, a generic term, is intended for various physical applications, which deals with the properties and interactions of matter and energy, space and time. Discoveries theories and experiments provide an essential link between applied physics and ballistics problems. "Applied" is distinguished from "pure" by a subtle combination of factors such as the motivation and attitude of researchers and the nature of the relationship to the ballistics. It usually differs from ballistics in that an applied physicist may not be designing something in particular, but rather research on physical concepts and connected laws/theories with the aim of understanding or solving ballistics related problems. This approach is similar to that of ballistics, which is the name of the applied scientific field. Competence in Applied Physics and Ballistics (APAB) is important multidisciplinary research areas in armaments science. Because of their multidisciplinary nature, the APAB is inseparable from physical, mathematical, experimental and computational aspects. In this context, this paper discusses a brief review into the APAB, their important roles in the armament research. And also summarize some of the current APAB activities in academia, armament research institute and industry. 1. Introduction: Objectives and Scopes Applied physics is a branch of physics that concerns itself with the applications of physical laws and theories with experimental its knowledge to other domains. -
Luckenbach Ballistics (Back to the Basics)
Luckenbach Ballistics (Back to the Basics) Most of you have probably heard the old country‐ such as the Kestrel that puts both a weather western song, Luckenbach, Texas (Back to the station and a powerful ballistics computer in my Basics of Love). There is really a place named palm. We give credit to Sir Isaac Newton for Luckenbach near our family home in the Texas formulating the basics of ballistics and calculus Hill Country. There’s the old dance hall, there’s we still use. Newton’s greatest contribution is the general store, and there are a couple of old that he thought of ballistics in terms of time, not homes. The few buildings are near a usually‐ distance. One of Newton’s best known equations flowing creek with grassy banks and nice shade tells us the distance an object falls depending on trees. The gravel parking lot is often filled with gravity and fall time. With distance in meters and Harleys while the riders sit in the shade and enjoy time in seconds, Newton’s equation is a beer from the store. Locals drive by and shake their heads as they remember the town before it Distance = 4.9 x Time x Time. was made famous by the song and Willie Nelson’s Fourth‐of‐July Picnics. At a time of 2 seconds the distance is 19.6 meters. A rock dropped from 19.6 meters Don’t think of Luckenbach as a place. The song takes 2 seconds to reach the ground. A rock really describes an attitude or way of life. -
3.5.3 the Use of Erosion Pins in Geomorphology
© Author(s) 2016. CC Attribution 4.0 License. ISSN 2047 - 0371 3.5.3 The use of erosion pins in geomorphology John Boardman1,2 and David Favis-Mortlock1 1Environmental Change Institute, Oxford University Centre for the Environment, Oxford, UK ([email protected]) 2Department of Environmental and Geographical Science, University of Cape Town, South Africa ABSTRACT: Erosion pins have been widely used in geomorphology since the 1950s to estimate rates of change (erosion and – less commonly – accumulation) in land surfaces. They may be used for short- and long-term surveys and are quick and easy to install and measure. Erosion pins are particularly suited to bare, undisturbed environments such as badlands and sand dunes. Our recommendations for their use follow those of Haigh (1977) and Lawler (1993) but we also discuss the need for researchers to be aware of issues which arise from of measurement error, particularly for short-term studies and analytical methods which rely on few pin measurements. There is also a not inconsiderable challenge involved in extrapolating results derived from erosion pin measurements to larger areas. KEYWORDS: badlands, erosion pins, erosion rates, measurement errors erosion pins is not necessary: useful data can Introduction be collected with occasional visits. The basic idea behind the use of erosion pins However, this simplicity is deceptive. to quantify land-surface change is very Considerations of pin siting, measurement straightforward. A rod is firmly fixed into the error, and interpretation of results rapidly ground (or other substrate), and a note made introduce additional complexity. Thus, any of the length of rod which remains exposed. -
Time-Lapse Geophysical Investigations Over a Simulated Urban Clandestine Grave*
This is the post print version, the definitive version is available at the website below: J Forensic Sci, November 2008, Vol. 53, No. 6 doi: 10.1111/j.1556-4029.2008.00884.x TECHNICAL NOTE Available online at: www.blackwell-synergy.com Jamie K. Pringle,1 Ph.D.; John Jervis,1 M.Res.; John P. Cassella,2 Ph.D.; and Nigel J. Cassidy,1 Ph.D. Time-Lapse Geophysical Investigations over a Simulated Urban Clandestine Grave* ABSTRACT: A simulated clandestine shallow grave was created within a heterogeneous, made-ground, urban environment where a clothed, plastic resin, human skeleton, animal products, and physiological saline were placed in anatomically correct positions and re-covered to ground level. A series of repeat (time-lapse), near-surface geophysical surveys were undertaken: (1) prior to burial (to act as control), (2) 1 month, and (3) 3 months post-burial. A range of different geophysical techniques was employed including: bulk ground resistivity and conductivity, fluxgate gradi- ometry and high-frequency ground penetrating radar (GPR), soil magnetic susceptibility, electrical resistivity tomography (ERT), and self potential (SP). Bulk ground resistivity and SP proved optimal for initial grave location whilst ERT profiles and GPR horizontal ‘‘time-slices’’ showed the best spatial resolutions. Research suggests that in complex urban made-ground environments, initial resistivity surveys be collected before GPR and ERT follow-up surveys are collected over the identified geophysical anomalies. KEYWORDS: forensic science, forensic geophysics, clandestine grave Forensic geophysical methods should be important for forensic enough to deposit the victim before back-filling with excavated soil victim search investigations. -
Meeting Reports
MEETING REPORTS The long arm of the (geoforensics) law A recent meeting in London Initiative on Forensic Geology (IUGS- remote sensing techniques meant that considered both the conventional IFG) and the two groups are now closely remains could be distinguished from the and unusual applications of linked. seafloor topography and other debris, and enabled the successful recovery geoscience to forensic investigation. Scope of the remains of many of the victims. Alastair Ruffell, Jamie Pringle and Forensic geology emerged in the 19th The research also highlighted just Ruth Morgan discuss the global and 20th centuries with the application how little we currently know about the expansion of forensic geoscience, of analyses of traces of sand, sediment decomposition of human remains in the and how this field is central to and soil to criminal investigations. The marine environment compared to the keeping geoscience at the forefront main questions answered by forensic terrestrial. The challenges of working in of science and public interest. geologists were in establishing whether these ‘extreme’ environments is further a suspect could have been at a crime compounded when the complexity of The term forensic geoscience often scene, or their alibi locations, and assessing the taphonomic processes draws to mind images of a scientist this type of analysis continues today. and establishing a post-mortem analysing dirt on a crime suspect’s However, geoscientific techniques have submersion interval (PMSI) in marine shoes. Important though such analyses also long been deployed in the search environments is addressed. Research are, the field has moved far beyond for buried or sunken items, as well as in in this study sought to establish the key these humble beginnings and now the sampling of inorganic materials at variables in play in this highly variable includes work on spacecraft surfaces, crime scenes. -
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. -
An Evaluation of Geophysical Methods in the Detection of Toddler-Sized Burials During the First Six Months of Burials
University of Mississippi eGrove Electronic Theses and Dissertations Graduate School 1-1-2015 An Evaluation of Geophysical Methods in the Detection of Toddler-Sized Burials During the First Six Months of Burials Paul Sullivan Martin University of Mississippi Follow this and additional works at: https://egrove.olemiss.edu/etd Part of the Anthropology Commons Recommended Citation Martin, Paul Sullivan, "An Evaluation of Geophysical Methods in the Detection of Toddler-Sized Burials During the First Six Months of Burials" (2015). Electronic Theses and Dissertations. 1175. https://egrove.olemiss.edu/etd/1175 This Thesis is brought to you for free and open access by the Graduate School at eGrove. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of eGrove. For more information, please contact [email protected]. AN EVALUATION OF GEOPHYSICAL METHODS IN THE DETECTION OF TODDLER- SIZED BURIALS DURING THE FIRST SIX MONTHS OF BURIAL A Thesis presented in partial fulfillment of requirements for the degree of Master of Arts in the Department of Sociology and Anthropology The University of Mississippi by Paul S. Martin August 2015 Copyright Paul S. Martin 2015 ALL RIGHTS RESERVED ABSTRACT Geophysical survey has become a major tool in the search for clandestine graves associated with missing person cases. However, relatively little research has been done to evaluate the efficacy of different instruments. Ground-penetrating Radar (GPR), magnetometry, resistivity, conductivity, and susceptibility survey data were collected over the first six months of interment at approximately 30-day intervals for two research plots: an open grassy area and a wooded area. -
IUGS's Annual Report for 2019
Surveys” at the RFG2018 conference attended (IPA), by several national geological surveys (GSC, ◇International Association of Sedimentologists USGS, BGR, BGS, Japan, Finland, Norway, (IAS), Australia etc.); ◇IGCP council meetings, ◇a follow-up meeting of the International Consortium of Geological Surveys (ICOGS) ◇Alliance of International Science Organiza- organized at the Prospectors and Developers tions (ANSO), Association of Canada (PDAC) Convention by ◇International Consortium on Landslides (ICL), It has been several months since the outbreak organizations. The DDE program was officially GSC and USGS for directors and representa- of the COVID-19 which has put the whole world announced at the 73rd IUGS EC meeting held in tives of geological surveys attended by about 20 ◇Int. Society of Soil Mechanics & Geotechnical at risk, has claimed hundreds of thousands lives Beijing on February 26-29, 2019. The DDE delegates from Australia, New Zealand, South Engineering (ISSMGE), and caused devastating social and economic mission is to harmonize Earth evolution data Africa, Afghanistan, USA, Tasmania, France, ◇Int. Association for Engineering Geology and consequences. I would like to express IUGS’ and share global geoscience knowledge and its Germany, Republic of Senegal, the Organiza- the Environment (IAEG). sincere sympathy to those who have lost their vision is to promote Earth science transforma- tion of African Geological Survey (OAGS), and loved ones and who are still suffering from the tion. Unlike other existing databases, DDE will EuroGeosurveys; The IUGS initiatives were also discussed with spreading of the pandemic. I sincerely thank all provide the geologies and geographies of Earth ◇Sessions of Directors of Geological Surveys ISC, UNESCO and the GeoUnions. -
Glacial Geomorphology☆ John Menzies, Brock University, St
Glacial Geomorphology☆ John Menzies, Brock University, St. Catharines, ON, Canada © 2018 Elsevier Inc. All rights reserved. This is an update of H. French and J. Harbor, 8.1 The Development and History of Glacial and Periglacial Geomorphology, In Treatise on Geomorphology, edited by John F. Shroder, Academic Press, San Diego, 2013. Introduction 1 Glacial Landscapes 3 Advances and Paradigm Shifts 3 Glacial Erosion—Processes 7 Glacial Transport—Processes 10 Glacial Deposition—Processes 10 “Linkages” Within Glacial Geomorphology 10 Future Prospects 11 References 11 Further Reading 16 Introduction The scientific study of glacial processes and landforms formed in front of, beneath and along the margins of valley glaciers, ice sheets and other ice masses on the Earth’s surface, both on land and in ocean basins, constitutes glacial geomorphology. The processes include understanding how ice masses move, erode, transport and deposit sediment. The landforms, developed and shaped by glaciation, supply topographic, morphologic and sedimentologic knowledge regarding these glacial processes. Likewise, glacial geomorphology studies all aspects of the mapped and interpreted effects of glaciation both modern and past on the Earth’s landscapes. The influence of glaciations is only too visible in those landscapes of the world only recently glaciated in the recent past and during the Quaternary. The impact on people living and working in those once glaciated environments is enormous in terms, for example, of groundwater resources, building materials and agriculture. The cities of Glasgow and Boston, their distinctive street patterns and numerable small hills (drumlins) attest to the effect of Quaternary glaciations on urban development and planning. It is problematic to precisely determine when the concept of glaciation first developed.