Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 43 for “"Stratiform"”.
-
The electrification of stratiform anvils
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
-
Microphysical Mechanisms in Stratiform Precipitation as Observed in OLYMPEX
… The microphysical characteristics of the stratiform component occurring during this 12–13 November event were investigated using simultaneous in-situ aircraft microphysical sampling and ground-based dual-polarization radar measurements. On 12 November, the University of North Dakota …
-
Stratabound and Stratiform Sulphide Mineralisation in the Scottish Dalradian
Predicted demand for cobalt in the production of high capacity batteries for electronic devices and in electric vehicles has increased as the world is expected to move away from the use of fossil fuels. It is likely that the demand for cobalt will rise beyond currently known reserves, therefore, …
-
An investigation of the relative efficiencies of the stratiform and cellular modes of precipitation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1962.
-
Analysis Of A Parallel Stratiform Mesoscale Convective System During The Midlatitude Continental Convective Clouds Experiment
… on 11 May 2011. In-situ measurements of the stratiform precipitation region were obtained from six horizontal flight legs flow by the University of North Dakota Citation II Weather Research Aircraft in conjunction with measurements collected using a multitude of ground-based radars and a …
-
Investigation of the positive interaction between the primary and secondary circulation and the roles of different types of precipitation in tropical cyclone formation
… we quantified the frequency occurrence of stratiform precipitation, shallow convection, mid-level convection (i.e., congestus) and deep convection as well as their contributions to the total precipitation using precipitation and cloud-type retrievals from the Tropical Rainfall Measuring …
-
Observed microphysical characteristics and inferred thermodynamic processes contributing to the structure, evolution, and maintenance of nocturnal elevated mesoscale convective systems
… conforming to the classic leading-line/trailing-stratiform mode, and others conforming to the parallel stratiform, leading stratiform, and nonlinear system modes. In one case observations were made in the stratiform region trailing a frontal squall line. Multiple-Doppler syntheses of the wind and …
-
Structure and statistical analysis of the microphysical properties of the comma-head region of cold-season midlatitude cyclones
… generating cells at cloud top, and regions of stratiform cloud further below, in which convectively-generated fall streaks of hydrometeors were embedded. Measurements were obtained within convective generating cells occurring at cloud top in 11 cyclones at temperatures between -10 and 55°C, and …
-
Numerical simulation of a squall line along a cold front
… 10-11 June 1985 squall line system with trailing stratiform precipitation observed during the Oklahoma PRE-STORM project has been numerically simulated using the three-dimensional cloud resolving nonhydrostatic COMMAS (COllaborative Model for Multiscale Atmospheric Simulation) model.
-
Evaluating the Skillfulness of the Hurricane Analysis and Forecast System (HAFS) Forecasts for Tropical Cyclone Precipitation using an Object-Based Methodology
… threshold is chosen to predominantly represent stratiform precipitation, and the 5 and 10 mm/hr thresholds are used as approximate thresholds between stratiform and convective precipitation. Shape metrics such as area, closure, dispersion, and fragmentation, are calculated for the forecast and …
-
Precipitation growth processes in the comma head region of an east coast winter storm
… temperature layers and horizontally into a stratiform region on the west side of the cross-section and a region of generating cells at cloud top on the east side. In the stratiform region, precipitation primarily formed near cloud top as polycrystalline crystals. As the P-3 descended through …
-
Petrogenesis of the Willis Mountain and East Ridge kyanite quartzite, Buckingham County, Virginia
… the largest known reserves of kyanite. The stratiform kyanite quartzite is overlain and underlain by quartz-muscovite schists which are in turn enveloped by biotite-amphibole gneiss of the Cambrian Chopawamsic formation, metamorphosed volcanic and volcaniclastic rocks. The entire package of …
-
The integration of petrologic and isotopic data from the Boulder Conglomerate to determine the age of the Navan orebody, Ireland
… occurs as early diagenetic concretions and as stratiform replacement. The 34S of these sulphides ranges from -21‰ to +1‰. The rock avalanches are overlain by clast-bearing carbonate mud strata. The carbonate mud is replaced by pyrite and paragenetically later sphalerite and galena. The isotopic …
-
Revisiting the importance of a Southern Ocean pattern effect
… While overall cloud cover shrinks, the loss of stratiform clouds is suppressed (IV) and convection is unfavorable (V) during this fast timescale. As Southern Ocean warming catches up with the rest of the globe (VI), the local Southern Ocean lapse rate destabilizes (VII) which accelerates the …
-
Structure of an east coast cyclone derived from airborne radar and model diagnostics
… the New England coastline on 2 February 2015. A stratiform echo was observed in the northeast half of the first of four flight legs with more convective echoes on the southwestern half. As the storm moved northeastward, the radar sampled more of the convective southern quadrant of the storm. …
-
Volcanic stratigraphy and lithochemistry of the lower Jurassic Hazelton group, host to the Eskay Creek precious and base metal volcanogenic deposit
… reserves are contained within the 21B Zone as stratiform, graded sulphide and sulphosalt beds, dominated bysphalerite-tetrahedrite; the deposit includes massive, strata bound lenses of stibnite-realgar-cinnabar-arsenopyrite and underlying epigenetic mineralization. 21 Zone deposit foot wall …
-
Controls on mineralisation in the Cadeby formation (lower magnesian linestone)
… whereas lower energy facies may host stratiform sulphides and baryte. Mineralization is also related to former displacive evaporites, either by direct replacement or by precipitation in voids resultant from evaporite dissolution. Diagenesis is complex with different mechanisms of …
-
Aspects of the geology, geochemistry and metamorphism of the lower orebody, Broken Hill deposit, Aggeneys
… Hill deposit, Aggeneys, is a metamorphosed stratiform Cu-Pb-Zn-Ag sulphide deposit situated in the mid-Proterozoic supracrustal sequence of the Bushmanland Subprovince in the Namaqualand Metamorphic Complex. The deposit comprises two superposed orebodies, each consisting mainly of massive …
-
Interannual variability in cloudiness, sea surface temperature, and atmospheric circulation over the midlatitude North Pacific during summer
… variability in surface-observed marine stratiform cloud (MSC) amount and sea surface temperature (SST) are closely coupled over the central North Pacific during summer. Increased (decreased) MSC amount occurs with decreased (increased) SST, resulting from coincident meridional shifts in …
-
Raindrop Size Distribution Retrieval And Evaluation Using An S-band Radar Profiler
… of rain. Also, profiler observations during stratiform rain are analyzed to retrieve the corresponding rain DSD’s. In particular, a gamma distribution model is introduced, which uses Rayleigh scattering portion of the Doppler velocity spectrum to estimate the raindrop size distribution. This …
Page 1 of 3