Meteotsunami of 29 August 1916 at Santo Domingo, Dominican Republic - analysis of the destruction of the USS Memphis

Author(s):  
Джордж Парарас-Караяннис

Пересмотренные официальные записи Следственного суда ВМС США содержат выводы о том, что разрушение бронированного крейсера USS Memphis 29 августа 1916 года на якоре у гавани Санто-Доминго (Сьюдад-Трухильо) Доминиканской Республики, остров Эспаньола, вероятно, было вызвано «тропическим волнением» «сейсмической бурей» или «цунами». Тем не менее, современный анализ этой морской катастрофы свидетельствует о том, что гибель корабля произошла не по какой-либо из этих причин, а из-за волн-убийц метеоцунами, вызванных быстрым, значительным и прогрессирующим падением атмосферного давления, которое началось в районе около 22 августа и было связано с проходящим ураганом, который в его самой близкой точке был около 250 морских миль на юг. Кроме того, штормовые волны от этого урагана двигались в направлении Санто-Доминго, преломляясь в резонансе у берега, и усиливались и трансформировались низким барометрическим давлением, мелким континентальным шельфом и местными особенностями побережья и батиметрией залива. Настоящий анализ основан на тщательном изучении судового журнала и наблюдений за событиями со стороны экипажа и людей на берегу. Учитывая ограниченные метеорологические данные того периода времени, в настоящем анализе использовался эмпирический подход для грубой оценки функции распределения Рэлея, верхнего предела изменчивости высоты штормовой волны вдали от наиболее интенсивных потоков ветра, а также максимального периода, длины волны и амплитуды генерируемых штормовых волн в глубине . Основываясь на теориях кноидальных волн и волн Эйри, период и скорость наиболее значительных экстремальных внутренних волн имели метеорологическое происхождение, которое было преобразовано в мелкой воде в результате резонансного и наложенного прихода двух других волн, которые создали трехступенчатое плато, на переднем фронте огромная одиночная волна-убийца метеоцунами высотой около 70 футов, с тремя четкими ступенями, двумя плато на передней поверхности и предшествующей впадиной длиной около 300 футов. Основываясь на этом анализе, настоящее исследование пришло к выводу, что именно эта значительная волна метеоцунами / волна-убийца в сочетании с одновременно прибывающими штормовыми волнами охватила Мемфис USS в 16 ч. 40 м. 29 августа 1916 года, разорвав цепи якорей и разрушая его на скалах Санто-Доминго. Official revised records of a U.S. Navy Court of Inquiry concluded that the 29 August 1916 destruction of the armored cruiser USS Memphis anchored off Santo Domingo (Ciudad Trujillo) harbor of the Dominican Republic, Island of Hispaniola, was probably caused by a “tropical disturbance”, a “seismic storm”, or a “tsunami”. However, the present analysis of this naval disaster documents that the loss of the ship was not due to any of these causes, but to rogue waves of a meteotsunami generated from a rapid, significant and progressive drop in atmospheric pressure which begun in the area around August 22 and was associated with a passing hurricane which at its closest point was about 250 nautical miles to the south. Also, storm waves from this hurricane moved towards Santo Domingo refracting in resonance near shore and were further amplified and transformed by the low barometric pressure, the shallow continental shelf and the local coastal features and bathymetry of the bay. The present analysis is based on careful examination of the ship’s log, and on observations of events by the crew and people on the shore. Given the limited meteorological data of that time period, the present analysis used an empirical approach to roughly evaluate the Rayleigh distribution function, the upper limit of storm wave height variability away from the most intense wind fetches, as well as the maximum period, wavelength and deep-water heights of generated storm waves. Based on Airy and cnoidal wave theories, the deep water period and celerity of the most significant extreme wave was of meteorological origin which was transformed in shallower water by the resonant and superimposed arrival of two other waves which created a three step plateau on the face of a huge single rogue wave of the meteotsunami, estimated to be about 70 feet in height, with three distinct steps, two plateaus on its forward face, and a preceding trough estimated to be 300 ft. long. Based on this analysis, the present study concluded that it was this significant meteotsunami/rogue wave, in combination with concurrently arriving storm swells, that engulfed the USS Memphis at 1640 hour in the afternoon of 29 August 1916 - breaking the chains of its anchors and wrecking it on the rocks of Santo Domingo.

Author(s):  
Paul C. Liu ◽  
Keith R. MacHutchon

There is clearly no immediate answer to the question posted by the title of this paper. Inasmuch as that there are not much definitively known about rogue waves and that there is still no universally accepted definition for rogue waves in the ocean, we think there might just be even more than one kind of rogue waves to contend with. While the conventional approach has generally designated waves with Hmax∕Hs greater than 2.2 as possible rogue waves, based on Rayleigh distribution considerations, there is conspicuously no provision as to how high the ratio of Hmax∕Hs can be and thus not known how high can a rogue wave be. In our analysis of wave measurements made from a gas-drilling platform in South Indian Ocean, offshore from Mossel Bay, South Africa, we found a number of cases that indicated Hmax∕Hs could be valued in the range between 4 and 10. If this were to be the case, then these records could be considered to be “uncommon” rogue waves, whereas a record of Hmax∕Hs in the range between 2 and 4 could be considered to comprise “typical” rogue waves. On the other hand, the spikes in the Hmax data could have been caused by equipment malfunction or some other phenomenon. Clearly, the question of whether or not there are different kinds of rogue waves cannot be readily answered by theoretical considerations alone and there is a crucial need for long-term wave time-series measurements for studying rogue waves.


2014 ◽  
Vol 14 (9) ◽  
pp. 2521-2527 ◽  
Author(s):  
Y. Wang ◽  
A.-F. Tao ◽  
J.-H. Zheng ◽  
D.-J. Doong ◽  
J. Fan ◽  
...  

Abstract. Due to the potential disasters induced by rogue waves, research in this field has increased rapidly in the last 2 decades. However, there are still a lot of open questions left, including some classic ones, such as whether the rogues waves are just rare events or not. One of the key reasons is that not enough of the observed rogue waves have been investigated. China has a wide sea area, but none of the research has addressed the observed rogue waves. In the present study, 1 year of observed wave data from Jiangsu coastal area, China, are analyzed. It is found that rogue waves are present, although the wave heights are not very large; furthermore, the probability of their occurrence is similar to the Rayleigh distribution prediction, due to the local silty coastal topography. The characteristics of rouge waves are investigated and the results indicate that a new type of rogue wave may exist.


Author(s):  
Marco Bertola ◽  
Gennady A. El ◽  
Alexander Tovbis

Rogue waves appearing on deep water or in optical fibres are often modelled by certain breather solutions of the focusing nonlinear Schrödinger (fNLS) equation which are referred to as solitons on finite background (SFBs). A more general modelling of rogue waves can be achieved via the consideration of multiphase, or finite-band, fNLS solutions of whom the standard SFBs and the structures forming due to their collisions represent particular, degenerate, cases. A generalized rogue wave notion then naturally enters as a large-amplitude localized coherent structure occurring within a finite-band fNLS solution. In this paper, we use the winding of real tori to show the mechanism of the appearance of such generalized rogue waves and derive an analytical criterion distinguishing finite-band potentials of the fNLS equation that exhibit generalized rogue waves.


2012 ◽  
Vol 12 (3) ◽  
pp. 751-762 ◽  
Author(s):  
E. M. Bitner-Gregersen ◽  
A. Toffoli

Abstract. A number of extreme and rogue wave studies have been conducted theoretically, numerically, experimentally and based on field data in the last years, which have significantly advanced our knowledge of ocean waves. So far, however, consensus on the probability of occurrence of rogue waves has not been achieved. The present investigation is addressing this topic from the perspective of design needs. Probability of occurrence of extreme and rogue wave crests in deep water is here discussed based on higher order time simulations, experiments and hindcast data. Focus is given to occurrence of rogue waves in high sea states.


2020 ◽  
Author(s):  
James Herterich ◽  
Francesco Fedele ◽  
Aziz Tayfun ◽  
Frederic Dias

<p>We present a statistical analysis of nearshore waves observed during two major north-east Atlantic storms in 2015 and 2017. Surface elevations were measured with a 5-beam acoustic Doppler current profiler (ADCP) at relatively shallow waters off the west coast of Ireland. To compensate for the significant variability of both sea states in time, we consider a novel approach for analyzing the non-stationary surface-elevation series and compare the distributions of crest and wave heights observed with theoretical predictions based on the Forristall, Tayfun and Boccotti models. In particular, the latter two models have been largely applied to and validated for deep-water waves. We show here that they also describe well the characteristics of waves observed in relatively shallow waters. The largest nearshore waves observed during the two storms do not exceed the rogue thresholds as the Draupner, Andrea, Killard or El Faro rogue waves do in intermediate or deep-water depths. Wave breaking limits wave growth and impedes the occurrence of rogue waves. Nevertheless, our analysis reveals that modulational instabilities are ineffective, third-order resonances negligible and the largest waves observed here have characteristics quite similar to those displayed by rogue waves for which second order bound nonlinearities are the principal factor that enhances the linear dispersive focusing of extreme waves.</p><p>Fedele, F., Herterich, J., Tayfun, A., & Dias, F. (2019). Large nearshore storm waves off the Irish coast. <em>Scientific reports</em>, <em>9</em>(1), 1-19.</p>


2020 ◽  
Vol 89 (1) ◽  
pp. 74-100
Author(s):  
Christina Cecelia Davidson

AbstractThis article examines North Atlantic views of Protestant missions and race in the Dominican Republic between 1905 and 1911, a brief period of political stability in the years leading up to the U.S. Occupation (1916–1924). Although Protestant missions during this period remained small in scale on the Catholic island, the views of British and American missionaries evidence how international perceptions of Dominicans transformed in the early twentieth century. Thus, this article makes two key interventions within the literature on Caribbean race and religion. First, it shows how outsiders’ ideas about the Dominican Republic's racial composition aimed to change the Dominican Republic from a “black” country into a racially ambiguous “Latin” one on the international stage. Second, in using North Atlantic missionaries’ perspectives to track this shift, it argues that black-led Protestant congregations represented a possible alternative future that both elite Dominicans and white North Atlantic missionaries rejected.


Author(s):  
Wei Tan ◽  
Zhao-Yang Yin

Abstract The parameter limit method on the basis of Hirota’s bilinear method is proposed to construct the rogue wave solutions for nonlinear partial differential equations (NLPDEs). Some real and complex differential equations are used as concrete examples to illustrate the effectiveness and correctness of the described method. The rogue waves and homoclinic solutions of different structures are obtained and simulated by three-dimensional graphics, respectively. More importantly, we find that rogue wave solutions and homoclinic solutions appear in pairs. That is to say, for some NLPDEs, if there is a homoclinic solution, then there must be a rogue wave solution. The twin phenomenon of rogue wave solutions and homoclinic solutions of a class of NLPDEs is discussed.


Author(s):  
Huanhuan Lu ◽  
Yufeng Zhang

AbstractIn this paper, we analyse two types of rogue wave solutions generated from two improved ansatzs, to the (2 + 1)-dimensional generalized Korteweg–de Vries equation. With symbolic computation, the first-order rogue waves, second-order rogue waves, third-order rogue waves are generated directly from the first ansatz. Based on the Hirota bilinear formulation, another type of one-rogue waves and two-rogue waves can be obtained from the second ansatz. In addition, the dynamic behaviours of obtained rogue wave solutions are illustrated graphically.


2021 ◽  
Vol 108 ◽  
pp. 102402
Author(s):  
S. Mendes ◽  
A. Scotti ◽  
P. Stansell

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