397 research outputs found
Continuation of monitoring in Egin, Idaho: Recharge experiment fall 2008 through spring 2010; Technical completion report 201001
No full textIn June 2009, the Idaho Water Resources Research Institute (IWRRI) and Idaho Department of Water Resources (IDWR) produced a report on the managed recharge project conducted in Egin, Idaho entitled “Monitoring of Egin, Idaho Recharge Experiment, Fall 2008” (Contor et al. 2009). Since June 2009, Water District 01 (WD 01) and the IDWR Eastern office (also referred to as IDWR-Eastern) employees have continued the monitoring effort with some assistance from IWRRI. The Egin Lakes ponds are located near a Bureau of Land Management recreational site at the end of the Recharge Canal in southwestern Fremont County, approximately 11 miles west of the town of St. Anthony (Figure 1). Several designated monitoring wells and one private well were monitored during the recharge experiment. The study area has historically been considered a potential groundwater recharge site. Previous investigations have been conducted to determine the feasibility of recharge and benefit to the Eastern Snake Plain Aquifer (ESPA). These previous recharge studies along with the Fall 2008 recharge experiment are discussed in detail in the previous Egin report (Contor et al. 2009). The goal of this project was for WD 01 and IDWR employees to continue monitoring the managed recharge effort in the Egin Lakes study area. WD 01 and IDWR employees maintained a majority of the hand water level measurements in the wells measured during the most recent recharge experiment and measured flow in several canals. IWRRI periodically visited wells installed with transducers and downloaded the data. Bryce Contor of IWRRI spent some of his personal time measuring end of canal spill in the Egin area. NOTE: title page incorrectly identifies this as IWRRI document 20101
Representation of recharge from canal leakage for calibration of Eastern Snake Plain Aquifer Model Version 2. Technical report 200804. ESPAM2 Design Doucment DDW-V2-01 ""Canal Recharge""
No full textAs described in ESPAM1.1 Design Document DDW-020 (Contor, 2004), water that seeps from the bed of ditches and canals is direct recharge to the aquifer and is unavailable for delivery to farm fields1 (and therefore unavailable for crop evapotranspiration, return flows to the surface-water source, or in-field incidental recharge). Representation of recharge from canal seepage affects the spatial distribution of modeled recharge, but does not affect the mass balance of recharge or the aquifer water budget. This is because if the water were not applied to canal leakage, it would be applied as incidental recharge in the irrigated-lands calculations. This Design Document outlines a proposal for treatment of recharge from canal seepage for ESPAM2. It is based on discussions in ESHMC meetings during the winter of 2007-2008 and e-mail communication from members. This is a draft document designed to describe the current proposal and solicit input
Representation of recharge from canal leakage for calibration of Eastern Snake Plain Aquifer Model Version 2, as built, Revision 1. Technical report 200907. ESPAM2 design document DDW-V2-01-Rev1 As Built “Canal Recharge”
No full textThis report is a Design Document for the calibration of the Eastern Snake Plain Aquifer Model Version 2 (ESPAM 2). Its goals are similar to the goals of Design Documents for ESPAM 1.1: To provide full transparency of modeling data, decisions and calibration; and to seek input from representatives of various stakeholders so that the resulting product can be the best possible technical representation of the physical system (given constraints of time, funding and personnel). It is anticipated that for some topics, a single Design Document will serve these purposes prior to issuance of a final report. For other topics, a draft document will be followed by one or more revisions and a final “as-built” Design Document. Superseded Design Documents will be maintained in a “superseded” file folder on the project Website, and successive versions will be maintained in a “current” folder. This will provide additional documentation of project history and the development of ideas. This is Revision 1 of the October 2009 As-built document (Contor, 2009). Revision was necessary due to adjustments made to accommodate the On-Farm algorithm of recharge-calculation software MKMOD adopted by IDWR. As described in ESPAM1.1 Design Document DDW-020 (Contor, 2004), water that seeps from the bed of ditches and canals is direct recharge to the aquifer and is unavailable for delivery to farm fields1 (and therefore unavailable for crop evapotranspiration, return flows to the surface-water source, or in-field incidental recharge). In the ESPAM1.1 representation, as well as the previous ESPAM2 representation, recharge from canal seepage affected the spatial distribution of modeled recharge, but did not affect the mass balance of recharge or the aquifer water budget. With the adoption of the On-Farm algorithm, canal seepage is subtracted from gross diversions before the field-headgate delivery volume is calculated. Depending on the calculated adequacy of field-headgate deliveries, the On-Farm algorithm can change the water budget. With this realization, IWRRI proposed and the ESHMC concurred that a second look at canal seepage was necessary. This Design Document reports on the canal-seepage estimates that resulted from this attempt at refinement. Further data and discussion are posted by Idaho Department of Water Resources (IDWR, 2010a, 2010b)
Representation of irrigated lands and source of irrigation water, Eastern Snake Plain Aquifer Model Version 2, as built; Technical report 201002, ESPAM2 design document DDM V2-04 ""Irrigated lands as built""
No full textThis report is a Design Document for the calibration of the Eastern Snake Plain Aquifer Model Version 2 (ESPAM 2). Its goals are similar to the goals of Design Documents for ESPAM 1.1: To provide full transparency of modeling data, decisions and calibration; and to seek input from representatives of various stakeholders so that the resulting product can be the best possible technical representation of the physical system (given constraints of time, funding and personnel). It is anticipated that for some topics, a single Design Document will serve these purposes prior to issuance of a final report. For other topics, a draft document will be followed by one or more revisions and a final “as-built” Design Document. Superseded Design Documents will be maintained in a “superseded” file folder on the project Website, and successive versions will be maintained in a “current” folder. This will provide additional documentation of project history and the development of ideas. This Design Document outlines the treatment of irrigated lands and source of irrigation water for ESPAM2. It is an ""as built"" document describing the water budget delivered to calibrators in June 2010, and supercedes the draft Design Document on source of irrigation water (Contor and Pelot, 2008). If additional modifications are made during calibration, this document will be amended
Bryce DeWitt referee report on paper, "Everett's Theory and the 'Many Worlds' Interpretation"
No full textAround 1988, Bryce DeWitt was asked to referee a paper by an author who argued that that DeWitt's version of Hugh Everett's theory was not true to Everett's original work. In his referee report, DeWitt offers to "set the record straight" about his interpretation of Everett's work. This is a copy of DeWitt's referee report. A version of the reviewed paper was subsequently published in 1990 in the American Journal of Physics. At the request of the DeWitt estate, the name of the author of the paper has been redacted. For further details see Byrne, P. (2010). The Many Worlds of Hugh Everett III. Oxford University Press.The estate of Bryce Dewitt
Representation of recharge from canal leakage for calibration of Eastern Snake Plain Aquifer Model Version 2, as built. Technical report 200907. ESPAM2 Design Document DDW-V2-01 As Built ''Canal Recharge''
No full textThis report is a Design Document for the calibration of the Eastern Snake Plain Aquifer Model Version 2 (ESPAM 2). Its goals are similar to the goals of Design Documents for ESPAM 1.1: To provide full transparency of modeling data, decisions and calibration; and to seek input from representatives of various stakeholders so that the resulting product can be the best possible technical representation of the physical system (given constraints of time, funding and personnel). It is anticipated that for some topics, a single Design Document will serve these purposes prior to issuance of a final report. For other topics, a draft document will be followed by one or more revisions and a final “as-built” Design Document. Superseded Design Documents will be maintained in a “superseded” file folder on the project Website, and successive versions will be maintained in a “current” folder. This will provide additional documentation of project history and the development of ideas. As described in ESPAM1.1 Design Document DDW-020 (Contor, 2004), water that seeps from the bed of ditches and canals is direct recharge to the aquifer and is unavailable for delivery to farm fields1 (and therefore unavailable for crop evapotranspiration, return flows to the surface-water source, or in-field incidental recharge). Representation of recharge from canal seepage affects the spatial distribution of modeled recharge, but does not affect the mass balance of recharge or the aquifer water budget. This is because if the water were not applied to canal leakage, it would be applied as incidental recharge in the irrigated-lands calculations. If we adopt an On-Farm water budget methodology, representation of the canal seepage will alter the water budget. This Design Document outlines a proposal for treatment of recharge from canal seepage for ESPAM2. It is based on discussions in ESHMC meetings during the winter of 2007-2008 and e-mail communication from members. This is a draft document designed to describe the current proposal and solicit input
Carissa Bryce Christensen
No full textCarissa Bryce Christensen is an internationally known expert on the space industry and technology forecasting. She led the creation of widely used data tools now considered global metrics for the commercial space and satellite sectors, providing non-advocate, data-driven insights. She is a frequent speaker and author on space and satellite trends, serves as a strategic advisor to government and commercial clients, and has been an expert witness and testified before Congress on market dynamics. Ms. Christensen is the CEO of Bryce Space and Technology, LLC (formerly a division of The Tauri Group), an analytic consulting firm. She is also an active investor in technology-focused startups and advises several companies she has helped seed. She serves on the board of QxBranch, an early stage quantum computing firm.
Ms. Christensen holds a Master of Public Policy degree from Harvard University\u27s Kennedy School of Government, where she specialized in science and technology policy. She also completed the General Course in Government at the London School of Economics and was a Douglass Scholar at Rutgers University.
Ms. Christensen is an Associate Fellow of The American Institute of Aeronautics and Astronautics Association.https://commons.erau.edu/space-congress-bios-2018/1022/thumbnail.jp
Determination of source of irrigation water for calibration of Eastern Snake Plain Aquifer Model Version 2. Draft 2. Technical report 200805. ESPAM2 design document DDW-V2-02 ''Source of Irrigation Water''
No full textThis report is a Design Document for the calibration of the Eastern Snake Plain Aquifer Model Version 2 (ESPAM 2). Its goals are similar to the goals of Design Documents for ESPAM 1.1: To provide full transparency of modeling data, decisions and calibration; and to seek input from representatives of various stakeholders so that the resulting product can be the best possible technical representation of the physical system (given constraints of time, funding and personnel). It is anticipated that for some topics, a single Design Document will serve these purposes prior to issuance of a final report. For other topics, a draft document will be followed by one or more revisions and a final “as-built” Design Document. Superseded Design Documents will be maintained in a “superseded” file folder on the project Website, and successive versions will be maintained in a “current” folder. This will provide additional documentation of project history and the development of ideas. The ESPAM1.1 Design Document stated: “Recharge from surface-water irrigation is the largest component of aquifer recharge, and a large source of model uncertainty. The second-largest component of aquifer discharge is net withdrawals (calculated as consumptive use, or evapotranspiration) due to ground-water irrigation. The source of water for individual parcels must be identified so that diverted volumes of surface water are applied to the appropriate spatial locations” (Contor, 2004). Additional parameters for water-budget calculation, such as evapotranspiration adjustment coefficients, could potentially depend on the source of water assigned to a particular parcel
Ground water irrigation polygons for recharge calculation. Water budget design document number DDW-009
No full textDesign documents are a series of technical papers addressing specific design topics on the eastern Snake River Plain Aquifer Model upgrade. Each design document will contain the following information: topic of the design document, how that topic fits into the whole project, which design alternatives were considered and which design alternative is proposed. In draft form, design documents are used to present proposed designs to reviewers. Reviewers are encouraged to submit suggested alternatives and comments to the design document. Reviewers include all members of the Eastern Snake Hydrologic Modeling (ESHM) Committee as well as selected experts outside of the committee. The design document author will consider all suggestions from reviewers, update the draft design document, and submit the design document to the SRPAM Model Upgrade Program Manager. The Program Manager will make a final decision regarding the technical design of the described component. The author will modify the design document and publish the document in its final form in .pdf format on the SRPAM Model Upgrade web site. Final model documentation will include all of the design documents, edited to ensure that the “as-built” condition is appropriately represented. This design document describes the designation of portions of the study area into “Ground Water Irrigation Polygons” for the purpose of recharge calculation. The withdrawals associated with irrigation from ground water are a negative recharge and will be calculated according to the equation: Net Recharge (ground water) = Precipitation - (ET x Adjustment Factor). The ET adjustment factor will be applied according to the geographic location of the irrigated land being calculated and the application method used to apply water. Adjustment factor and application method parameters for irrigation from ground water will be carried as attributes of the ground water irrigation polygon map. This paper describes the construction of the ground water irrigation polygon map. Parameters for surface water irrigation will be carried as attributes of the aggregated surface water entity map, described in Design Document DDW-008
Delineation of sprinkler and gravity application systems. Technical report 04-005. Project scenario document DDW-022 final as-built
No full textDesign documents are a series of technical papers addressing specific design topics on the eastern Snake River Plain Aquifer Model upgrade. Each design document will contain the following information: topic of the design document, how that topic fits into the whole project, which design alternatives were considered and which design alternative is proposed. In draft form, design documents are used to present proposed designs to reviewers. Reviewers are encouraged to submit suggested alternatives and comments to the design document. Reviewers include all members of the Eastern Snake Hydrologic Modeling (ESHM) Committee as well as selected experts outside of the committee. The design document author will consider all suggestions from reviewers, update the draft design document, and submit the design document to the SRPAM Model Upgrade Program Manager. The Program Manager will make a final decision regarding the technical design of the described component. The author will modify the design document and publish the document in its final form in .pdf format on the SRPAM Model Upgrade web site. Final model documentation will include all of the design documents, edited to ensure that the “as-built” condition is appropriately represented. This Design Document is the final as-built version, reflecting the actual calculated sprinkler percentages for each irrigation entity and ground water polygon. It reflects the revised surface water irrigation entities modified in spring of 2003. The model proposes use of “adjustment factors” to calculate fieldcondition evapotranspiration from predicted evapotranspiration under wellwatered, disease free conditions. Because actual evapotranspiration may be affected by the type of application system used (as well as other factors), and because changes in application system type (e.g. gravity to sprinkler) have occurred during the period of the study, a method for identifying application method and describing changes is required. A secondary reason to identify application method is that the difference between actual irrigated acres and nominal irrigated acres may depend on application method (see Design Document DDW-015)
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