25,764 research outputs found
italiangrid/storm-webdav: StoRM WebDAV v. 1.1.0
No full text<p>Release notes:
<a href="http://italiangrid.github.io/storm/release-notes/storm-webdav/1.1.0/">http://italiangrid.github.io/storm/release-notes/storm-webdav/1.1.0/</a></p>
Testing the storm et al.(2010) meta-analysis using bayesian and frequentist approaches: Reply to rouder et al.(2013)
No full textRouder, Morey, and Province (2013) stated that (a) the evidence-based case for psi in Storm, Tressoldi, and Di Risio's (2010) meta-analysis is supported only by a number of studies that used manual randomization, and (b) when these studies are excluded so that only investigations using automatic randomization are evaluated (and some additional studies previously omitted by Storm et al., 2010, are included), the evidence for psi is “unpersuasive.” Rouder et al. used a Bayesian approach, and we adopted the same methodology, finding that our case is upheld. Because of recent updates and corrections, we reassessed the free-response databases of Storm et al. using a frequentist approach. We discuss and critique the assumptions and findings of Rouder et al.Storm, Lance; Tressoldi, Patrizio E.; Utts, Jessic
Kunst, skæg og ballade – Storm P. i den tidlige stumfilm
No full textMultikunstneren Storm P. var blandt meget andet stumfilmpioner hos Nordisk Films Kompagni. Denne artikel kortlægger Storm P.s karriere som filmskuespiller, som han senere spandt humoristiske og ikke alt for sandfærdige anekdoter om, og diskuterer hans motivation til at være en del af den tidligste films "ballade"
Coastal Storm Activity along the Eastern North Island of New Zealand - East Cape to Wellington
No full textCoastal storm activity for the eastern North Island, between East Cape and Wellington, has been quantified from a meteorological perspective through the use of cyclone tracks and extreme winds and from an oceanographic perspective by using hindcast wave information. It has culminated in the production of a high quality, digital coastal storm database for the eastern North Island. Together, this information provides a new understanding of coastal storm behaviour for the eastern North Island. A regional database of historical coastal storms along the eastern North Island between 1930 and 2005 (75 years) is now available in digital format. Coastal storms were identified as bouts of strong winds (greater than or equal to 10.5 m/s) from long-term local wind records from 1962 to 2005, and prior to this period, coastal storms were qualitatively recognised as any event leading to coastal shipping disruptions/delays, large wave conditions along the coast, episodes of coastal erosion and strong onshore wind periods. This digital database consists of five informative components that include storm meteorology, storm oceanography, impacts and damages, storm photo’s and images, and data sources. It has identified a set of five storm types for the eastern North Island consisting of Trough/Ridges, East Coast Lows, Subtropical Lows, Tasman Sea Lows, and Cyclone-Anticyclone pair. The two dominant types are Trough/Ridge and East Coast Low, with the Trough pattern involving weather systems primarily from the southern ocean, whilst East Coast Lows involve large cyclones off the coast that can be distantly generated (from the Tasman Sea or subtropics) or locally generated around NZ from southern ocean troughs. The most intense coastal storms off the eastern North Island are East Coast Lows involving cyclones from the subtropics. These storm events reveal blocking-type anticyclones east of the Chatham Islands play a vital role in coastal storm activity by steering cyclones southward towards NZ and then blocking any eastward movements so that cyclones become slow-moving off the east coast. These factors increase the intensity of pressure gradients directly over eastern NZ. The Gisborne region, for the 1962-1991 period (30 years), had an annual average of three coastal storms and displays peak activity in September. These storms are overwhelming from the south and southeast. A longer dataset of local winds at Wellington, spanning 1962-2005 (44 years), produced an annual average frequency of 9 coastal storms per year. The monthly distribution revealed peak storm activity in June and heightened activity between May and August. Both short-lived, high intensity storms (winds greater than or equal to 14.5 m/s for at least 12 hours) and long-lived, lower intensity storms (winds greater than or equal to 10.5m/s for at least 24 hours) were identified for the Wellington region. Approximately 70% of these coastal storms persisted for up to two days duration and are predominately from the south and southwest. Furthermore, the more exposed nature and steep terrain surrounding Wellington means a greater likelihood of higher intensity coastal storms compared to the Gisborne region. Strong cyclonic systems in the southwest Pacific cluster in the central Tasman Sea and east of the Chatham Islands in all seasons and are most frequent in winter. It is during winter that a clear frequency maximum is spotted over North Cape and appears to be related to the presence of slow-moving cyclones rather than high counts of discrete systems. Strong cyclones tend to form in the western Tasman Sea, in the subtropics near 22-23S, and near North Cape. This local formation off North Cape could be related to the Tasman front and North Cape eddy which create warm sea surface temperature anomalies. The complete life cycle of all strong cyclones shows formation, intensification and maturity in the western-central Tasman Sea, and therefore, a large proportion of these cyclones approaching NZ are weakening systems. However, local generation and intensification near North Cape and the Chatham Islands ensures strong cyclones continue to influence eastern NZ, and further indicates weakened Tasman Sea cyclones can drive coastal storm events through interactions with ridges and high pressure systems. Strong cyclones are most frequent around NZ in August when an average of 4-5 systems per month occurs. Extreme onshore winds off the eastern coast of NZ consist principally of winds from the southwest and south with a single high latitude frequency maximum near the dateline. These winds are generated from southern ocean cyclonic activity and their northward-extending troughs that pass over NZ, and their spread onto eastern NZ means they likely represent intense coastal storm events. Southeast, east and northeast winds rarely reach up to and beyond 20 m.s-1 over the seas to the east of NZ and generally cluster north of 40-45S indicating both subtropical and higher midlatitude source mechanisms. Extreme southeast winds are generated by the eastern flanks of large anticyclones that occupy the western Tasman Sea or large anticyclones south of the Chatham Islands. The principal frequency maximum of east and northeast winds is remote from NZ appearing near 165°W, and represent distant generation areas for large swell events (rather than coastal storm activity). These winds that occur over northern NZ are associated with a Tasman Sea or subtropical cyclone off North Cape in combination with a large anticyclone or ridge over/or east of the South Island. In contrast, the distant core for eastward of NZ are generated off the backs of large anticyclones with a trough or cyclone on its northern flank. The deep-water wave climate off the eastern North Island is dominated by waves from the south. Between 9 and 13 large wave events occur each year between East Cape and Wellington and are most likely in the months of May, June and July. In contrast, large storm waves from the southeast, east and northeast have annual average frequencies of 1-3 events. The Gisborne coast was found to be the most exposed with large deep-water waves (greater than or equal to 3m) coming from the northeast through to the southwest. However, waves from the south and southwest are the largest and most persistent. The meteorology creating these waves are southern ocean troughs whilst the less frequent waves from the easterly quarter involve low pressure systems east or northeast of NZ. The different proxies for studying coastal storms all have shortfalls and arrive at different levels of coastal storm activity. It is suggested here that an optimal mix of these proxies can be used to identify damaging coastal storms along the eastern North Island
Dynamic subauroral ionospheric electric fields observed by the Falkland Islands radar during the course of a geomagnetic storm
No full textWe present an analysis of ionospheric electric field data observed during a geomagnetic
storm by the recently deployed HF radar located on the Falkland Islands. On 3 August
2010 at ∼1800 UT evidence of the onset of a geomagnetic storm was observed in ground
magnetometer data in the form of a decrease in the Sym‐H index of ∼100 nT. The
main phase of the storm was observed to last ∼24 hours before a gradual recovery lasting
∼3 days. On 4 August, during the peak magnetic disturbance of the storm, a high velocity
(>1000 m s−1) channel of ionospheric plasma flow, which we interpret as a subauroral
ion drift (SAID), located between 53° and 58° magnetic south and lasting ∼6.5 hours, was
observed by the Falkland Islands radar in the pre‐midnight sector. Coincident flow data
from the DMSP satellites and the magnetically near‐conjugate northern hemisphere
Blackstone HF radar reveal that the SAID was embedded within the broader subauroral
polarization streams (SAPS). DMSP particle data indicate that the SAID location closely
followed the equatorward edge of the auroral electron precipitation boundary, while
remaining generally poleward of the equatorward boundary of the ion precipitation. The
latitude of the SAID varied throughout the interval on similar timescales to variations in
the interplanetary magnetic field and auroral activity, while variations in its velocity were
more closely related to ring current dynamics. These results are consistent with SAID
electric fields being generated by localized charge separation in the partial ring current, but
suggest that their location is more strongly governed by solar wind driving and associated
large‐scale magnetospheric dynamics
moves-rwth/storm: v1.2.2
No full text<ul>
<li>Sound value iteration (SVI) for DTMCs and MDPs</li>
<li>Topological solver for linear equation systems and MinMax equation systems (enabled by default)</li>
<li>Added support for expected total rewards in the sparse engine</li>
<li>By default, iteration-based solvers are no longer aborted after a given number of steps.</li>
<li>Improved export for jani models</li>
<li>A fix in parsing jani properties</li>
<li>Several extensions to high-level counterexamples</li>
<li><code>storm-parsers</code> extracted to reduce linking time</li>
<li><code>storm-counterexamples</code> extracted to reduce linking time</li>
<li><code>storm-dft</code>: improvements in Galileo parser</li>
<li><code>storm-dft</code>: test cases for DFT analysis</li>
<li>Improved Storm installation</li>
<li>Several bug fixes</li>
</ul>
Løgn og Latin:Spot, spe og religionssatire 1500-1900
No full textUdstillingskatalog til udstilling om religionssatire på Storm P Museet 201
The driving mechanisms of particle precipitation during the moderate geomagnetic storm of 7 January 2005
No full textInternational audienceThe arrival of an interplanetary coronal mass ejection (ICME) triggered a sudden storm commencement (SSC) at ~09:22 UT on the 7 January 2005. The ICME followed a quiet period in the solar wind and interplanetary magnetic field (IMF). We present global scale observations of energetic electron precipitation during the moderate geomagnetic storm driven by the ICME. Energetic electron precipitation is inferred from increases in cosmic noise absorption (CNA) recorded by stations in the Global Riometer Array (GLORIA). No evidence of CNA was observed during the first four hours of passage of the ICME or following the sudden commencement (SC) of the storm. This is consistent with the findings of Osepian and Kirkwood (2004) that SCs will only trigger precipitation during periods of geomagnetic activity or when the magnetic perturbation in the magnetosphere is substantial. CNA was only observed following enhanced coupling between the IMF and the magnetosphere, resulting from southward oriented IMF. Precipitation was observed due to substorm activity, as a result of the initial injection and particles drifting from the injection region. During the recovery phase of the storm, when substorm activity diminished, precipitation due to density driven increases in the solar wind dynamic pressure (Pdyn) were identified. A number of increases in Pdyn were shown to drive sudden impulses (SIs) in the geomagnetic field. While many of these SIs appear coincident with CNA, SIs without CNA were also observed. During this period, the threshold of geomagnetic activity required for SC driven precipitation was exceeded. This implies that solar wind density driven SIs occurring during storm recovery can drive a different response in particle precipitation to typical SCs
Climate Change and the Future Impacts of Storm-Surge Disasters in Developing Countries
No full textAs the climate changes during the 21st century, larger cyclonic storm surges and growing populations may collide in disasters of unprecedented size. As conditions worsen, variations in coastal morphology will magnify the effects in some areas, while largely insulating others. In this paper, we explore the implications for 84 developing countries and 577 of their cyclone-vulnerable coastal cities with populations greater than 100,000. Combining the most recent scientific and demographic information, we estimate the future impact of climate change on storm surges that will strike coastal populations, economies and ecosystems. We focus on the distribution of heightened impacts, because we believe that greater knowledge of their probable variation will be useful for local and national planners, as well as international donors. Our results suggest gross inequality in the heightened impact of future disasters, with the most severe effects limited to a small number of countries and a small cluster of large cities.climate change; developing countries; disasters; coastal cities; storm surges; coastal populations; economic activity
Luminescence dating of storm-surge sediment
No full textGeological evidence of storm surges has the potential to provide vital information on storm-surge risk. Sediment from the coastal dunes of the Netherlands contains evidence of extreme floods that occurred before reliable measurements of water level began. For these sediments to be useful in flood-risk analysis, they need to be reliably dated. This thesis investigates the use of Luminescence dating for storm-surge sediment. Luminescence dating is a radiometric dating method, which uses tiny light signals emitted from mineral grains to estimate the time that the grains were deposited. The method is shown to be suitable for dating storm-surge sediment, and other types of flood deposits.Radiation, Radionuclides & ReactorsApplied Science
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