Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (2091)
- Arts and Humanities (1110)
- Education (761)
- Physical Sciences and Mathematics (671)
- Geography (663)
-
- Law (606)
- Life Sciences (504)
- Medicine and Health Sciences (394)
- Public Affairs, Public Policy and Public Administration (379)
- Sociology (376)
- History (330)
- Environmental Sciences (321)
- Business (278)
- Engineering (242)
- Anthropology (234)
- Earth Sciences (232)
- Economics (232)
- Environmental Studies (231)
- International and Area Studies (214)
- Higher Education (212)
- Political Science (188)
- Public Health (188)
- Urban Studies and Planning (178)
- Religion (176)
- Human Geography (169)
- Library and Information Science (163)
- Architecture (139)
- Curriculum and Instruction (129)
- Race, Ethnicity and Post-Colonial Studies (128)
- Communication (126)
- Institution
-
- University of Plymouth (246)
- University of Nebraska - Lincoln (180)
- City University of New York (CUNY) (160)
- Portland State University (160)
- Ohio University (125)
-
- University of South Florida (120)
- Louisiana State University (114)
- Utah State University (96)
- San Jose State University (95)
- University of Montana (91)
- Brigham Young University (90)
- University of Mississippi (87)
- University of South Carolina (85)
- West Virginia University (81)
- University of Kentucky (80)
- University of New Mexico (72)
- Walden University (70)
- Singapore Management University (69)
- University of Arkansas, Fayetteville (62)
- Edith Cowan University (61)
- Purdue University (61)
- Syracuse University (61)
- University of Louisville (61)
- University of North Dakota (61)
- Western Kentucky University (61)
- Wilfrid Laurier University (59)
- Chulalongkorn University (58)
- Old Dominion University (58)
- Technological University Dublin (58)
- Universitas Indonesia (55)
- Keyword
-
- Education (88)
- Climate change (83)
- Geography (81)
- Sustainability (78)
- Environment (66)
-
- GIS (58)
- Gender (42)
- Geography News (41)
- Envirome (40)
- Higher education (40)
- History (40)
- Remote sensing (40)
- Sustain (40)
- Migration (34)
- Western Kentucky University (31)
- Archaeology (30)
- Rural (30)
- The U.S. Naval War College (30)
- Conservation (29)
- Race (29)
- Agriculture (27)
- Development (27)
- China (26)
- Identity (26)
- Leadership (26)
- Resilience (26)
- Public health (25)
- Technology (25)
- United States (25)
- Culture (24)
- Publication
-
- Theses and Dissertations (181)
- School of Geography, Earth and Environmental Sciences (140)
- Faculty Publications (130)
- Electronic Theses and Dissertations (118)
- All Forum Articles (74)
-
- Walden Dissertations and Doctoral Studies (67)
- Dissertations, Theses, and Capstone Projects (63)
- Library Philosophy and Practice (e-journal) (59)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (57)
- Dissertations (57)
- Faculty Scholarship (46)
- Publications and Research (45)
- Graduate Theses and Dissertations (44)
- USF Tampa Graduate Theses and Dissertations (43)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (41)
- Sustain Magazine (40)
- Dissertations and Theses (39)
- Honors Theses (36)
- Journal of Amish and Plain Anabaptist Studies (33)
- Research outputs 2014 to 2021 (33)
- Faculty & Staff Scholarship (31)
- Independent Study Project (ISP) Collection (31)
- Masters Theses (31)
- Master's Theses (30)
- Naval War College Review (30)
- Graduate Student Theses, Dissertations, & Professional Papers (29)
- Articles (28)
- School of Biological and Marine Sciences (28)
- University of Montana Course Syllabi (27)
- LSU Doctoral Dissertations (26)
- Publication Type
- File Type
Articles 1321 - 1350 of 6989
Full-Text Articles in Entire DC Network
Information Seeking Behaviour Of Scientific Community At Assam, India: A Proposed Model For E-Environment, Sudip Bhattacharjee Assistant Professor, Sucheta Bhattacharjee, Manoj Kumar Sinha Professor
Information Seeking Behaviour Of Scientific Community At Assam, India: A Proposed Model For E-Environment, Sudip Bhattacharjee Assistant Professor, Sucheta Bhattacharjee, Manoj Kumar Sinha Professor
Library Philosophy and Practice (e-journal)
The present study has been undertaken to know the information seeking pattern of the scientific community who belong to different universities under the study. In this study, it has been tried to find out the satisfaction after utilization of print or digital information resources available in the digital environment with a view to understand the situation of the existing library system. After evaluation and observation of the findings of the study critically, it leads to create confusion regarding the nature of information seeking pattern by the scientific community. It is found that the existing library information system is seemed to …
Webometric Analysis Of Central Universities In North Eastern Region, India. A Study Of Using Alexa Internet, Stephen G
Library Philosophy and Practice (e-journal)
Webometrics is concerned with measuring aspects of the web: web sites, web pages, parts of web pages, words in web pages, hyperlinks, web search engine results. Webometrics is huge and easily accessible source of information, there are limitless possibilities for measuring or counting on a huge scale of the number of web pages, the number of web sites, the number of blogs) or on a smaller scale. This study found the traffic rank in India, especially Central Universities of North East Region, the best-ranked Central University of North East Region are NEHU and TU with traffic ranks of 8484 and …
Contributions Of E-Resources In Tamil Nadu Digital Library Repository By The State Universities: A Study, Siva Kumaren, Raj Kumar
Contributions Of E-Resources In Tamil Nadu Digital Library Repository By The State Universities: A Study, Siva Kumaren, Raj Kumar
Library Philosophy and Practice (e-journal)
This paper discuses the e-Resources deposited in the Tamil Nadu Digital Library (TNDL) project by the participating Universities .The major of objective of the study is to analysis the contributions of the e-Resources by 13 State Universities in the Digital Repository (DR).The relevant data were extracted from website of Tamil Nadu Digital Library (http://www.tndigitallibrary.ac.in). It has 158555 digital resources and 1330195 subject catalogues on various disciplines. The results show that Anna University has deposited more number of journals than the other Universities. It is also investigated that more number of subject catalogues are available on Literature. Further, it is recommended …
Libguides As A Collection Development Tool: The Case Of North-West University , South Africa, Siviwe Bangani, Siviwe Bangani, Boitumelo Masilo, Molly Kekana, Mathew Moyo
Libguides As A Collection Development Tool: The Case Of North-West University , South Africa, Siviwe Bangani, Siviwe Bangani, Boitumelo Masilo, Molly Kekana, Mathew Moyo
Library Philosophy and Practice (e-journal)
This paper uses informetrics methods to explore the use of LibGuides to benchmark and select books at the Mafikeng Campus of the North-West University (NWU) in South Africa. The books selected or recommended by librarians in all public university LibGuides were identified and compared with those of NWU Library and Information Services-Mafikeng Campus. A list of all books that were not available at the Campus but conform to the collection development policy of NWU Library and Information Services was sent to the relevant academic departments for selection. The books that were recommended for purchase by the departments were then ordered. …
Gentrification Of Bibliotheca For The Digital Citizens, Ritu Nagpal
Gentrification Of Bibliotheca For The Digital Citizens, Ritu Nagpal
Library Philosophy and Practice (e-journal)
Bringing together the multi-folded facets of the various disciplines across the globe, the role of Libraries, the bibliotheca is transforming. The surging demand for the information in todays’ digital world, has been substantially changing the role of libraries. The Libraries are altering their roles by providing enhanced & enriched set of services. The patrons of this Digital civilization and the fresh entries alongwith the extension to this collection of tools and services has also changed. Prabha, Chandra, Lynn Silipigni Connaway, Lawrence Olszewski, and Lillie Jenkins calls todays’ world as “overloaded information environment”. This study on Gentrification of Bibliotheca for the …
User Awareness On ‘Single Window Search’ Tool Provided By The Kmc Health Sciences Library, Mahe, Manipal: A Study, Swapna -, Mahabaleshwara Rao, Shivananda Bhat
User Awareness On ‘Single Window Search’ Tool Provided By The Kmc Health Sciences Library, Mahe, Manipal: A Study, Swapna -, Mahabaleshwara Rao, Shivananda Bhat
Library Philosophy and Practice (e-journal)
In academic libraries, information resources are increasing at an alarming rate due to information explosion and development in information and communication technology. Open access resources available for access are also increasing. Academic libraries are putting their best effort to make the process of conducting literature search much easier as users find it difficult to search for literature on a given research topic through several types of resources separately. This necessitated the integration of information resources for easy access. A Web-Scale Discovery tool integrates library subscribed content, library catalogue, digital repositories, open access resources and offers a search and retrieval interface …
Library User Education As Panacea To Students Successful Research In Nigerian Universities : A Case Of Federal University Lokoja, Nigeria, Aminu Danbabale, Ayuba Ubale Saad
Library User Education As Panacea To Students Successful Research In Nigerian Universities : A Case Of Federal University Lokoja, Nigeria, Aminu Danbabale, Ayuba Ubale Saad
Library Philosophy and Practice (e-journal)
No abstract provided.
How To Motivate Students In Using School Library, Dessy Harisanty
How To Motivate Students In Using School Library, Dessy Harisanty
Library Philosophy and Practice (e-journal)
The school library is a place for students to find information. Due to the various information provided inside, students have many choices in finding the information they need. Therefore, school libraries should have a strategy to maximize their services. This study aims to determine the motivation of high school students in Surabaya in utilizing their school library. The method used is descriptive quantitative approach. The sample of this research is high school students in Surabaya selected using multistage random sampling with a total of 200 respondents. The data were collected through questionnaires. The results of this study indicates that the …
The Need For The Use Of Information And Communication Technology In Two University Libraries In Nigeria, Akor Solomon Obotu, Okechukwu O. Chukwuka, Sule B. Gambo
The Need For The Use Of Information And Communication Technology In Two University Libraries In Nigeria, Akor Solomon Obotu, Okechukwu O. Chukwuka, Sule B. Gambo
Library Philosophy and Practice (e-journal)
No abstract provided.
Volume 55, Issue 1 - Monday, September 16, 2019, Rose Thorn Staff
Volume 55, Issue 1 - Monday, September 16, 2019, Rose Thorn Staff
The Rose Thorn Archive
The Rose Thorn, Rose-Hulman's independent student newspaper.
Designing A Blue-Green Infrastructure (Bgi) Network: Toward Water-Sensitive Urban Growth Planning In Dhaka, Bangladesh, Sanjana Ahmed, Mahbubur Meenar, Ashraful Alam
Designing A Blue-Green Infrastructure (Bgi) Network: Toward Water-Sensitive Urban Growth Planning In Dhaka, Bangladesh, Sanjana Ahmed, Mahbubur Meenar, Ashraful Alam
School of Earth & Environment Departmental Research
In a warming world, urban environmental stresses are exacerbated by population-increase-induced development of grey infrastructure that usually leaves minimal scope for blue (and green) elements and processes, potentially resulting in mismanagement of stormwater and flooding issues. This paper explores how urban growth planning in the megacity of Dhaka, Bangladesh can be guided by a blue-green infrastructure (BGI) network that combines blue, green, and grey elements together to provide a multifunctional urban form. We take a three-step approach: First, we analyze the existing spatial morphology to understand potential locations of development and challenges, as well as the types of solutions necessary …
Globally Engaged September 16, 2019, Haenicke Institute
Globally Engaged September 16, 2019, Haenicke Institute
Global News
Global Engagement Opportunities for Monday, September 16th to Monday, September 23rd, 2019.
Ohio University Mock Trial Team Announces 2019-20 Team Members, Ohio University College Of Arts & Sciences
Ohio University Mock Trial Team Announces 2019-20 Team Members, Ohio University College Of Arts & Sciences
All Forum Articles
No abstract provided.
A Study Of The American Boxer Indemnity Scholarship Program And Its Influence On Chinese Education: Taking Shandong Students As An Example, Pengxiu Sun
Seton Hall University Dissertations and Theses (ETDs)
The American Boxer Indemnity Scholarship Program (ABISP) was one of the most important events in the modern Chinese history of overseas education. This thesis focuses on the group of Shandong students which has representative characteristics of the whole American Boxer Indemnity Scholarship Program (ABISP) students to provide descriptive data for the influence on Chinese higher education through the achievements of Shandong students in the American Boxer Indemnity Scholarship Program (ABISP) in higher education. Through tracking the forty-two Shandong ABISP students, the thesis shows the establishment of Tsinghua University and ABISP students’ study and life in Tsinghua and the United States. …
Parental Involvement In Career Development, John G. Schroedel, Sammye Carnahan
Parental Involvement In Career Development, John G. Schroedel, Sammye Carnahan
JADARA
Most deaf high school graduates in this study were actively learning about careers and making future plans. Most of their parents encouraged these activities through a variety of ways. These results were derived from interviews with 189 deaf seniorsin16 high schools and from a mail survey of their parents. Findings indicated that a majority of seniors had discussed their future plans with family members and most parents supported these plans. A majority of parents had also engaged in six types of activities to stimulate the career development of their deaf sons and daughters. Parents also reported numerous other ways they …
Red Oak Seedlings As Indicators Of Deer Browse Pressure: Gauging The Outcome Of Different White-Tailed Deer Management Approaches, Bernd Blossey, Paul Curtis, Jason Boulanger, Andrea Davalos
Red Oak Seedlings As Indicators Of Deer Browse Pressure: Gauging The Outcome Of Different White-Tailed Deer Management Approaches, Bernd Blossey, Paul Curtis, Jason Boulanger, Andrea Davalos
Biology Faculty Publications
After decades of high deer populations, North American forests have lost much of their previous biodiversity. Any landscape‐level recovery requires substantial reduc‐ tions in deer herds, but modern societies and wildlife management agencies appear unable to devise appropriate solutions to this chronic ecological and human health crisis. We evaluated the effectiveness of fertility control and hunting in reducing deer impacts at Cornell University. We estimated spring deer populations and planted Quercus rubra seedlings to assess deer browse pressure, rodent attack, and other factors compromising seedling performance. Oak seedlings protected in cages grew well, but deer annually browsed ≥60% of unprotected …
Inter-Comparison Of Reflectivity Measurements Between Gpm Dpr And Nexrad Radars, Munsung Keem, Bong Chul Seo, Witold F. Krajewski, K. Robert Morris
Inter-Comparison Of Reflectivity Measurements Between Gpm Dpr And Nexrad Radars, Munsung Keem, Bong Chul Seo, Witold F. Krajewski, K. Robert Morris
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This study demonstrates the potential use of the NASA's Global Precipitation Measurement (GPM) Dual-frequency Precipitation Radar (DPR) to examine ground radar (GR) miscalibration and other uncertainty sources (e.g., partial beam blockage). We acquired the GPM Ground Validation System Validation Network reflectivity matchups between the DPR and three GRs (two in Iowa and one in South Dakota) for 2014–2017. We then refined the matching parameters (e.g., time separation) to reduce uncertainty in the matchup samples by analyzing the sensitivity of the matchup statistical properties to changes in these parameters. To reconcile the same observables (i.e., reflectivity) with different observational properties among …
Evaluation Of The Water Of Tigris For Various Uses Near Al-Muthanna In Baghdad For The Period (2013-2015), نجلة عجيل محمد
Evaluation Of The Water Of Tigris For Various Uses Near Al-Muthanna In Baghdad For The Period (2013-2015), نجلة عجيل محمد
Alustath Journal for Human and Social Sciences
The study examines some of the pollution determinants of the water of Tigris near Al-Muthanna Bridge in Baghdad for the period (2013-2015), comparing it with the Iraqi and international standards, and indicating the validity of its use for different usages. By analyzing the results of the characteristics of the water , it is found that variation during the research period, and a value was registered among the environmental determinants allowed for the purpose of drinking concerning the indicators{ (NO3-), acid function (PH) except for the month of May (2014) only, which took the base side for the …
Assessing The Quality Of Urban Life In Cities - Domains And Indicators A Comparative Analytical Study Of Opposite Spatial Dimensions, جاكلين قوسن زومايا, جمال باقر مطلك السعدي
Assessing The Quality Of Urban Life In Cities - Domains And Indicators A Comparative Analytical Study Of Opposite Spatial Dimensions, جاكلين قوسن زومايا, جمال باقر مطلك السعدي
Alustath Journal for Human and Social Sciences
The interest has been increased towards the issues of improving the quality of urban life that it has become a feature of contemporary urban communities for promoting their sustainable future. This requires the integration of economic, social, environmental, physical and psychological domains for the purpose of ensuring a healthy and livable environment.The ultimate aim of the research is to set and measure indicators to assess the quality of urban life in the city of Baghdad depending on the objective and subjective indicators. That had been attained by determining the contrasted spatial (regional) dimensions of the city in order to recognize …
Encroachment On The Master Plan Of Al- Warka City, Jasim Wihoah Al-Jayshi, Akeel Kadom Waly
Encroachment On The Master Plan Of Al- Warka City, Jasim Wihoah Al-Jayshi, Akeel Kadom Waly
Alustath Journal for Human and Social Sciences
The design is the document that regulates, defines and explains the spatial distribution required for different uses of land in the city, and aims to control or guide the city in different stages of growth in a way that accommodates all the social, economic and cultural changes that take place, and the changes that are expected to occur in the city, thus achieving a balanced and proper coexistence between society and the city. Through the city's success in performing its functions and services with the highest level of efficiency. This study highlights the excesses that have occurred in the master …
Rock Structures And Their Effect On The Rise Of Salt Concentrations In The Euphrates River (Al-Shamya – Al Kifl Irrigation) Practical Study Using Rs & Gis Techniques, نبراس عباس ياس
Alustath Journal for Human and Social Sciences
The study deals with investigating the rock formations and their effect on the rise of salt concentrations in the Euphrates River within Diwaniyah and Najaf governorates (Shat Abbasiyah and Kufa), which is located between two latitudes (44°20ˋ00̏-44°40ˋ00̏) East and longitude (31°53‵00‶-32°00‵00‶) north.The aim of the study is to survey the use of remote sensing and geographic information systems techniques in analyzing the effect of the different rock structures in the study area, namely the geological structure, which is due to the deposition of the fourth time, the linear structures, the cracks, the degree of regression and the direction …
Multiple Intelligence And Its Relation To The Specialization Of Students In The Colleges Of Education And Sciences For Girls., رنا فاضل عباس الجنابي
Multiple Intelligence And Its Relation To The Specialization Of Students In The Colleges Of Education And Sciences For Girls., رنا فاضل عباس الجنابي
Alustath Journal for Human and Social Sciences
The diversity of the human mind and the differences among people and their implications for their behavior have attracted the interest of scientists , including the scholar Gardner and his theory of multiple intelligences in 1983,It is one of the cognitive theories that has revolutionized since the emergence of educational practices , and its importance is highlighted in guiding each individual to the job that suits him and also helps a lot to solve problems if he uses the type of intelligence appropriately. The objectives of this study are the following:- Detecting multiple intelligences in the research sample.- Detecting differences …
(Distribution Of The Population Of Muthanna Governorate During The Period 1997-2018 And The Factors Influencing It), صبرية علي حسين العبيدي, عاتكة فائق رضا
(Distribution Of The Population Of Muthanna Governorate During The Period 1997-2018 And The Factors Influencing It), صبرية علي حسين العبيدي, عاتكة فائق رضا
Alustath Journal for Human and Social Sciences
The research shows the population density distribution in Muthanna Governorate for the period (1997-2018) and clarifies the most important regions there, as well as it is an attempt for knowing the rate of absolute and relative change of the population in the province, and also it identifies the most important factors that have an impact in showing those regions of the population density in the province and according to administrative units. The methodology of research has been based on the general approach of analysis and distribution and correlation. The research relied on the statistics of population for the year 1997, …
Semiotics: A Theoretical Scientific Research, Aqeel Al -Maliki
Semiotics: A Theoretical Scientific Research, Aqeel Al -Maliki
Alustath Journal for Human and Social Sciences
Semiotics is a science and a multi-aspect analytical tool in the study of everything denoting another. Let it be known that making use of a semiotic analysis of literary texts reveals the multi-aspects of literary signs, such as sounds, words, meters, symbols, and concepts by tackling the internal structure of these signs as well as the way they are used and their denotations . The study is an attempt to clarify that knowing semiotics helps create a better understanding among students. So, in order to describe semiotics, and to identify the various signs in social life, a good number of …
Al-Jawahiri: The Geography Of Writing And Its Impact On Poetic Transformation, عارف حمود سالم الساعدي
Al-Jawahiri: The Geography Of Writing And Its Impact On Poetic Transformation, عارف حمود سالم الساعدي
Alustath Journal for Human and Social Sciences
Mohammed Mehdi al-Jawahiri is one of the most important poets whose poetry is dressed up in the heritage. However, there are different perspectives to view al-Jawahiri’s poetry at the top of which – I believe – is the place. Here I do not mean the philosophical dimension of the place, but the place in its geographical and environmental dimensions, with its trees, dreariness, beauty, water and snow, with the village that pulses in his poetry, and the city that looms large upon it. Here, I would stop at the “Spatial Geography” since the heritage has already been largely discussed What …
Regional Scale Dryland Vegetation Classification With An Integrated Lidar-Hyperspectral Approach, Hamid Dashti, Andrew Poley, Nancy Glenn, Nayani Ilangakoon, Lucas Spaete, Dar Roberts, Et. Al.
Regional Scale Dryland Vegetation Classification With An Integrated Lidar-Hyperspectral Approach, Hamid Dashti, Andrew Poley, Nancy Glenn, Nayani Ilangakoon, Lucas Spaete, Dar Roberts, Et. Al.
Michigan Tech Publications, Part 1
The sparse canopy cover and large contribution of bright background soil, along with the heterogeneous vegetation types in close proximity, are common challenges for mapping dryland vegetation with remote sensing. Consequently, the results of a single classification algorithm or one type of sensor to characterize dryland vegetation typically show low accuracy and lack robustness. In our study, we improved classification accuracy in a semi-arid ecosystem based on the use of vegetation optical (hyperspectral) and structural (lidar) information combined with the environmental characteristics of the landscape. To accomplish this goal, we used both spectral angle mapper (SAM) and multiple endmember spectral …
Citation Rates For Ohio State Graduate Theses & Dissertations: Trends, Surprises, And Inaccuracies, Daniel S. Dotson
Citation Rates For Ohio State Graduate Theses & Dissertations: Trends, Surprises, And Inaccuracies, Daniel S. Dotson
Library Philosophy and Practice (e-journal)
The Ohio State University’s holdings of graduate theses and dissertations were examined to determine if highly-downloaded titles tended to be highly-cited. The study found that citation rates were highly variable and did not necessarily correspond to download rates. This included very highly downloaded titles with low citation rates, and lesser-downloaded titles with high citation rates. The study found that Google Scholar, which was used to identify citation rates, too often counts theses and dissertations as a version of a different work with the same title, even if it is another format and sometimes with additional authors. This article will share …
Being In Uncertainties: An Inquiry-Based Model Leveraging Complexity In Teaching-Learning, Diane Rosen
Being In Uncertainties: An Inquiry-Based Model Leveraging Complexity In Teaching-Learning, Diane Rosen
Northeast Journal of Complex Systems (NEJCS)
Education is traditionally structured as a closed system, privileging result-driven methods that offer control and predictability. In recent decades this reductionist approach has been effectively challenged by interdisciplinary work in complex systems theory, revealing myriad levels of orderly disorder that make either-or, linear instruction an inadequate norm. Narrowing the broad implications of a complexity lens on education, this paper focuses on generative uncertainty in teaching-learning, a paradoxical state of epistemological and creative growth described by English poet John Keats as "the negative capability of being in uncertainties, mysteries, doubts." Opportunities to advance this potentiating capacity are especially abundant in constructivist …
Community-Based Tourism Development As Gendered Political Space: A Feminist Geographical Perspective, Neha Nimble
Community-Based Tourism Development As Gendered Political Space: A Feminist Geographical Perspective, Neha Nimble
Journal of Interdisciplinary Feminist Thought
Drawing from a doctoral thesis on the construction of gender in livelihoods, this paper analyzes women’s experiences of participation in a local decentralized governance body (Village Tourism Development Committee) within a State implemented community based rural tourism development program that aims at political empowerment of women and the marginalised. Building a theoretical framework located in Feminist Political Geography, this paper adds to the knowledge on the gendered nature of space by examining the unexplored role of local decentralized governance and development agencies as political space in which culturally and historically embedded gender and caste roles intersect to impact the outcome …
Direct Monitoring Reveals Initiation Of Turbidity Currents From Extremely Dilute River Plumes, Sophie Hage, Matthieu J.B. Cartigny, Esther J. Sumner, Michael A. Clare, John E. Hughes Clarke, Peter J. Talling, D. Gwyn Lintern, Stephen M. Simmons, Ricardo Silva Jacinto, Age J. Vellinga, Joshua R. Allin, Maria Azpiroz-Zabala, Jenny A. Gales, Jamie L. Hizzett, James E. Hunt, Alessandro Mozzato, Daniel R. Parsons, Ed L. Pope, Cooper D. Stacey, William O. Symons, Mark E. Vardy, Camilla Watts
Direct Monitoring Reveals Initiation Of Turbidity Currents From Extremely Dilute River Plumes, Sophie Hage, Matthieu J.B. Cartigny, Esther J. Sumner, Michael A. Clare, John E. Hughes Clarke, Peter J. Talling, D. Gwyn Lintern, Stephen M. Simmons, Ricardo Silva Jacinto, Age J. Vellinga, Joshua R. Allin, Maria Azpiroz-Zabala, Jenny A. Gales, Jamie L. Hizzett, James E. Hunt, Alessandro Mozzato, Daniel R. Parsons, Ed L. Pope, Cooper D. Stacey, William O. Symons, Mark E. Vardy, Camilla Watts
Center for Coastal and Ocean Mapping
Rivers (on land) and turbidity currents (in the ocean) are the most important sediment transport processes on Earth. Yet how rivers generate turbidity currents as they enter the coastal ocean remains poorly understood. The current paradigm, based on laboratory experiments, is that turbidity currents are triggered when river plumes exceed a threshold sediment concentration of ~1 kg/m3. Here we present direct observations of an exceptionally dilute river plume, with sediment concentrations 1 order of magnitude below this threshold (0.07 kg/m3), which generated a fast (1.5 m/s), erosive, short-lived (6 min) turbidity current. However, no turbidity current occurred during subsequent river …