Digital Commons Network^™

Evidence For Partial Quenching Of Orbital Angular Momentum Upon Complex Formation In The Infrared Spectrum Of Oh-Acetylene, Mark D. Marshall, James B. Davey, Margaret E. Greenslade, Marsha I. Lester

Chemistry

The entrance channel leading to the addition reaction between the hydroxyl radical and acetylene has been examined by spectroscopic characterization of the asymmetric CH stretching band of the π-hydrogen bonded OH-acetylene reactant complex. The infrared action spectrum observed at 3278.6 cm⁻¹ (origin) consists of seven peaks of various intensities and widths, and is very different from those previously reported for closed-shell HF/HCl-acetylene complexes. The unusual spectrum arises from a partial quenching of the OH orbital angular momentum in the complex, which in turn is caused by a significant splitting of the OH monomer orbital degeneracy into ²A′ …

Visualizing The Geology Of Lake Trout Spawning Sites: Northern Lake Michigan, Peter Dartnell, Peter Barnes, James V. Gardner, Kristen Lee

Center for Coastal and Ocean Mapping

Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Lake floor geology is one of the main factors determining where lake trout spawn, feed, and hide. In support of ongoing research to study Lake Michigan trout habitats, the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers mapped the morphology of principle lake trout spawning sites. Using the Army Corps of Engineer's SHOALS airborne lidar (Light Detection and Ranging) system we mapped six regions in Northern Lake Michigan in …

University Of New Hampshire May 2004 Graduates, Lori Wright

Media Relations

No abstract provided.

The New Hampshire, Vol. 93 [94], No. 49 [51] (May 4, 2004), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 93, but it is the 94th volume in the series. This was corrected in pencil.

This issue was printed as 49, but it is the 51st issue in this volume. This was corrected in pencil.

View Direction, Surface Orientation And Texture Orientation For Perception Of Surface Shape, Colin Ware, Graeme Sweet

Center for Coastal and Ocean Mapping

Textures are commonly used to enhance the representation of shape in non-photorealistic rendering applications such as medical drawings. Textures that have elongated linear elements appear to be superior to random textures in that they can, by the way they conform to the surface, reveal the surface shape. We observe that shape following hache marks commonly used in cartography and copper-plate illustration are locally similar to the effect of the lines that can be generated by the intersection of a set of parallel planes with a surface. We use this as a basis for investigating the relationships between view direction, texture …

Integrated Navigation System: Not A Sum Of Its Parts, Lee Alexander, Joseph F. Ryan Capt., Michael J. Casey

Center for Coastal and Ocean Mapping

Similar to the evolutionary process for living organisms, marine navigation systems are becoming increasingly complex and sophisticated. Both by design and function, shipboard and shore-based navigation systems are no longer individual equipment components operating independently. Instead, the trend is toward integration, data fusion and synergy. One example of this are new Performance Standards being considered by IMO to achieve a “harmonized” presentation of all navigation-related information on the display of an integrated navigation system (INS). Unlike a dedicated display for ECDIS or radar, the new INS displays will be a task-oriented composite presentations that enable the mariner to configure the …

Inland Ecdis Development And Standardization, Lee Alexander

Center for Coastal and Ocean Mapping

Report on the work undertaken and progress made since CHRIS15 on developing and standardizing Inland ECDIS through North American and European collaboration, and future plans

Infrared Spectrum And Stability Of A Π-Type Hydrogen-Bonded Complex Between The Oh And C2h2 Reactants, James B. Davey, Margaret E. Greenslade, Mark D. Marshall, Marsha I. Lester, Martyn D. Wheeler

Chemistry

A hydrogen-bonded complex between the hydroxyl radical and acetylene has been stabilized in the reactant channel well leading to the addition reaction and characterized by infrared action spectroscopy in the OH overtone region. Analysis of the rotational band structure associated with the a-type transition observed at 6885.53(1) cm−1 (origin) reveals a T-shaped structure with a 3.327(5) Å separation between the centers of mass of the monomer constituents. The OH (v = 1) product states populated following vibrational predissociation show that dissociation proceeds by two mechanisms: intramolecular vibrational to rotational energy transfer and intermolecular vibrational energy transfer. The highest observed OH …

On The Uncertainty Of Archive Hydrographic Datasets, Brian R. Calder

Center for Coastal and Ocean Mapping

As the international hydrographic community continues to address the question of the irreducible uncertainty in modern surveys, we must ask how we do the same with archived Vertical Beam Echosounder (VBES) and leadline datasets. The ONR funded Strataform project surveyed an area of the New Jersey shelf around 39◦12’N 72◦50’W using an EM1000 Multibeam Echosounder (MBES). This area is also covered by NOAA surveys from 1936- 38 (assumed to be leadline) and 1975-76 (VBES). By comparison of the archival soundings to the MBES data, estimates of measurement error for the archival surveys are constructed as a function of depth. The …

Quantitative Inter-Channel Calibration Of Shoals Signals For Consistent Bottom Segmentation And Characterization, Semme J. Dijkstra, G. Elston

Center for Coastal and Ocean Mapping

No abstract provided.

Report On Open Ecdis Forum (Oef) Activities, Lee Alexander

Center for Coastal and Ocean Mapping

No abstract provided.

Unh Space Scientists Reach Out To The Public, David Sims

Media Relations

No abstract provided.

Nighttime Removal Of Nox In The Summer Marine Boundary Layer, S S. Brown, Jack E. Dibb, H Stark, M Aldener, Marcy Vozzella, Sallie I. Whitlow, E J. Williams, Brian M. Lerner, R Jakoubek, A M. Middlebrook, J A. Degouw, C Warneke, P D. Goldan, W C. Kuster, W M. Angevine, D Sueper, Patricia K. Quinn, Timothy S. Bates, James Meagher, Fred C. Fehsenfeld, A R. Ravishankara

Earth Sciences

The nitrate radical, NO3, and dinitrogen pentoxide, N2O5, are two important components of nitrogen oxides that occur predominantly at night in the lower troposphere. Because a large fraction of NO2 reacts to form NO3 and N2O5 during the course of a night, their fate is an important determining factor to the overall fate of NOx (=NO and NO2). As a comprehensive test of nocturnal nitrogen oxide chemistry, concentrations of O3, NO, NO2, NO3, N2O5, HNO3 and a host of other relevant compounds, aerosol abundance and composition, and meteorological conditions were measured in the marine boundary layer from the NOAA research …

Constraints On The Sources Of Tropospheric Ozone From 210pb-7be-O3 Correlations, Hongyu Liu, Daniel Jacob, Jack E. Dibb, Arlene M. Fiore, Robert Yantosca

Earth Sciences

The 210Pb-7 Be-O3 relationships observed in three aircraft missions over the western Pacific (PEM-West A and B, TRACE-P) are simulated with a global three-dimensional chemical tracer model (GEOS-CHEM) driven by assimilated meteorological observations. Results are interpreted in terms of the constraints that they offer on sources of tropospheric ozone (O3). Aircraft observations of fresh Asian outflow show strong 210Pb-O3 correlations in September–October, but such correlations are only seen at low latitudes in February–March. Observations further downwind over the Pacific show stronger 210PbO3 correlations in February–March than in September–October. The model reproduces these results and attributes the seasonal contrast to strong …

2003-04 Faculty Senate - April 5, 2004 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

The New Hampshire, Vol. 93 [94], No. 41 [42] (April, 2, 2004), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 93, but it is the 94th volume in the series. This was corrected in pencil.

This issue was printed as 41, but it is the 42nd issue in this volume. This was corrected in pencil.

Relative Timing Of Substorm Onset Phenomena, L. Kepko, M. G. Kivelson, R. L. Mcpherron, Harlan E. Spence

Physics & Astronomy

[1] In this paper we examine the temporal ordering of midtail flow bursts, Pi2 pulsations, and auroral arc brightening at substorm onset. We present three substorm events for which the Geotail spacecraft was situated at local midnight, near the inner edge of the plasmasheet. We show that high-speed, convective Earthward directed plasma flows observed by Geotail occurred 1–3 min before auroral onset as observed by the Polar Visible Imaging System and Ultraviolet Imager auroral imagers on board the Polar spacecraft. We also show that the onsets of both nightside Pi2 pulsations and magnetic bay variations were simultaneous with auroral onset. …

Energetic Particle Sounding Of The Magnetopause: A Contribution By Cluster/Rapid, Q. Zong, T. A. Fritz, Harlan E. Spence, K. Oksavik, Z. Y. Pu, A. Korth, P. W. Daly

Physics & Astronomy

[1] In this paper we present new results using Cluster/Research with Adaptive Particle Imaging Detectors (RAPID) energetic particle observations to remotely sound the high-latitude magnetopause in three dimensions. We demonstrate that energetic particle flux variations in the vicinity of the magnetopause (inside the magnetosphere) are mainly modulated by the absorbing magnetopause during quiet geomagnetic conditions. Less than two gyro radii from an absorbing boundary a trapped particle distribution becomes nongyrotropic, as particles start to encounter the boundary. Knowing the magnetic field and the particle mass and energy, the direction and distance to the magnetopause can be derived by examining the …

A Time Comparison Of Computer-Assisted And Manual Bathymetric Processing, Brian R. Calder, Shep Smith

Center for Coastal and Ocean Mapping

We describe an experiment designed to determine the time required to process Multibeam Echosounder (MBES) data using the CUBE (Combined Uncertainty and Bathymetry Estimator) [Calder & Mayer, 2003; Calder, 2003] and Navigation Surface [Smith et al., 2002; Smith, 2003] algorithms. We collected data for a small (22.3xl06 soundings) survey in Valdez Narrows, Alaska, and monitored person-hours expended on processing for a traditional MBES processing stream and the proposed computer-assisted method operating on identical data. The analysis shows that the vast majority of time expended in a traditional processing stream is in subjective hand-editing of data, followed by line planning and …

Heliospheric Plasma Sheets, N. U. Crooker, Chia-Lin L. Huang, S. M. Lamassa, D. E. Larson, S. W. Kahler, Harlan E. Spence

Physics & Astronomy

[1] As a high-beta feature on scales of hours or less, the heliospheric plasma sheet (HPS) encasing the heliospheric current sheet shows a high degree of variability. A study of 52 sector boundaries identified in electron pitch angle spectrograms in Wind data from 1995 reveals that only half concur with both high-beta plasma and current sheets, as required for an HPS. The remaining half lack either a plasma sheet or current sheet or both. A complementary study of 37 high-beta events reveals that only 5 contain sector boundaries while nearly all (34) contain local magnetic field reversals, however brief. We …

2003-04 Faculty Senate - March 8, 2004 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

The New Hampshire, Vol. 93 [94], No. 34 [35] (Feb. 24, 2004), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 93, but it is the 94th volume in the series. This was corrected in pencil.

This issue was printed as 34, but it is the 35th issue in this volume. This was corrected in pencil.

2003-04 Faculty Senate - February 23, 2004 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

U.S. Law Of The Sea Cruise To Map The Foot Of The Slope And 2500-M Isobath Of The U.S. Arctic Ocean Margin, Barrow To Barrow. Cruise Report, Larry A. Mayer

Center for Coastal and Ocean Mapping

U.S. Law of the Sea cruise to map the foot of the slope and 2500-m isobath of the US Arctic Ocean margin

CRUISES HE-0302

August 30 to September 11, 2003

Barrow, AK to Barrow, AK

High Resolution Measurements Of Kinetic Energy Release Distributions Of Neon, Argon, And Krypton Cluster Ions Using A Three Sector Field Mass Spectrometer, K. Gluch, S. Matt-Leubner, L. Michalak, Olof E. Echt, A. Stamatovic, P. Scheier, T. D. Mark

Physics & Astronomy

Using a newly constructed three sector field mass spectrometer (resulting in a BE1E2 field configuration) we have measured the kinetic energy release distributions of neon, argon, and krypton cluster ions. In the present study we used the first two sectors, B and E1, constituting a high resolution mass spectrometer, to select the parent ions in terms of mass, charge, and energy, and studied the decay of those ions in the third field free region. Due to the improved mass resolution we were able to extend earlier studies carried out with a two sector field machine, where an upper size limit …

Dedicated Polarimeter Design For Hard X-Ray And Soft Gamma-Ray Astronomy, Mark L. Mcconnell, J Ledoux, John R. Macri, James M. Ryan

Space Science Center

We have developed a modular design for a hard X-ray and soft gamma-ray polrimeter that we call GRAPE (Gamma RAy Polarimeter Experiment). Optimized for the energy range of 50-300 keV, the GRAPE design is a Compton polarimeter based on the use of an array of plastic scintillator scattering elements in conjunction with a centrally positioned high-Z calorimeter detector. Here we shall review the results from a laboratory model of the baseline GRAPE design. The baseline design uses a 5-inch diameter position sensitive PMT (PSPMT) for readout of the plastic scintillator array and a small array of CsI detectors for measurement …

On The Solar Wind Control Of Cusp Aurora During Northward Imf, M. G. Bobra, S. M. Petrinec, S. A. Fuselier, E. S. Claflin, Harlan E. Spence

Physics & Astronomy

[1] The location of cusp aurora during northward interplanetary magnetic field (IMF) conditions and the solar wind control of that location are explored. The cusp aurora is imaged by the Imager for Magnetopause-to-Aurora Global Exploration's (IMAGE) Far Ultraviolet Instrument (FUV). Predicted locations of the cusp aurora were computed by assuming anti-parallel reconnection between the observed IMF orientation and the 1996 Tsyganenko model magnetopause magnetic field. While the majority of anti-parallel reconnection sites tailward of the cusp, when mapped to the ionosphere, coincide with the observed cusp aurora, the anti-parallel merging hypothesis cannot explain certain aspects of the observations, including its …

2003 Performance And Progress Report: Unh/Noaa Joint Hydrographic Center, Larry A. Mayer, Noaa-Unh Joint Hydrographic Center (Jhc/Ccom)

Progress Reports

Report Period: 01/01/2003 – 12/31/2003

Unh Scientists To Study How Climate Change Will Affect Regional Air Quality, David Sims

Media Relations

No abstract provided.

Asian Dust Storm Events Of Spring 2001 And Associated Pollutants Observed In New England By The Atmospheric Investigation, Regional Modeling, Analysis And Prediction (Airmap) Monitoring Network, Linsey J. Debell, Marcy Vozzella, R. Talbot, Jack E. Dibb

Earth Sciences

Between 18 April and 13 May 2001, three statistically extreme dust aerosol events were observed across the entire northeastern United States. High levels of bulk aerosol water-soluble Ca²⁺ (range = 42–482 pptv) and PM_2.5 elemental Ca (range = 19–156 pptv) were observed simultaneously at Atmospheric Investigation, Regional Modeling, Analysis and Prediction (AIRMAP) and Interagency Monitoring of Protected Visual Environments (IMPROVE) stations. On the basis of Ca²⁺ concentrations, the average bulk dust concentration for all events across all four AIRMAP stations was estimated to be 7.4 μg/m³. There was no evidence of dust outbreaks in North …