Search results

The purpose of this paper is to discuss the history of the TIDES (Teaching, Images and Digital Experiences) Program, and demonstrate how TIDES has created mutually beneficial partnerships through sharing resource and collaborating on digital initiatives with a variety of institutions in both Texas and Mexico.

In order to bridge the digital and cultural divide in East Texas classrooms, TIDES has formed partnerships with institutions and educators from Mexico. By offering media rich resources, adapting current curriculum for today's digital environment, and fostering international partnerships, TIDES has built a model for an education program that promotes local and global understanding.

Bringing together teachers from Mexico and Texas has resulted in a better understanding of each culture, which has translated to the classroom. These connections have been further supported by TIDES virtual expeditions, art projects, and primary source documents.

Over time, TIDES has grown from a small, regional project to a university supported and sustained program. TIDES has pursued new ways the university library can contribute to the university community by forging partnerships in unexpected places. TIDES also offers unique opportunities for educators to travel on teacher expeditions, experiencing firsthand the cultures they are trying to relate to and teach about.

This paper demonstrates unique ways that libraries and library staff can reach across the aisle to other departments and institutions, working together to increase access to and visibility of their services. The TIDES Program can be used as a model in other communities, as well as a starting point for other collaborative projects.

What is this tide of history that washes over the continent of Australia after 1788 destroying in its wake much of the indigenous people’s relationship with land and waters? Now only remnants, fragments of a former aboriginal inscription of law/lore remain evident in the Australian physical and metaphoric landscape.¹ In Law, the “tide of history” has been extended from its original voicing in Mabo v. Queensland [No. 2] (1992) to become a justificatory strategy for the limitation of responsibility and a concurrent apologia that simultaneously acknowledges a previous aboriginal connection with land but denies its current legitimacy.²

Using oceanographer Rachel Carson's study The Edge of the Sea (1955) to contextualise tidal spaces, this chapter discusses how constantly shifting and eroding coastlines act as a site for writing, re-writing and performing acts of cultural and personal memory. It also considers the ecological impact of human activity on tidal spaces and their more-than-human inhabitants.

14-18 NOW's Pages of the Sea, directed by Danny Boyle, invited communities around the United Kingdom to meet on their local beach to commemorate those who were lost in World War I by marking portraits in the tidal sands. Choreographer Chloë Smith's Tidal, performed in Berwick-upon-Tweed in 2015, was commissioned as a commemorative work but became an act of personal memorialising when Smith's brother drowned prior to the event. Performance company Curious's Out of Water (2012–2014), invites participants on a dawn-walk to the shoreline exploring memory, time, genealogy and water through song and movement. My own collaborative site-responsive work, Tide Times (2018), created with electroacoustic composer Tim Cooper for the tidal island of Cramond, explores the multiple identities of place over time. Tide Times encouraged audiences to create their own tidal poems and artworks through a series of invitations in treasure chests hidden around the island.

In explicating these aforementioned artworks, which explore ideas of remembrance using tidal spaces, this chapter will also acknowledge the forgetting that is implicit in performing these actions. What can the legacy of commemorations traced in such a transient and precarious space as a tidal zone be? This chapter argues that while shorelines provide sites for large and small scale acts of public remembering, they are simultaneously acts of forgetting as the twice daily tides cause inevitable erasure.

Based on the existing provisions/operations of tsunami warning in the Indian Ocean, authors observed that detection as well as arrival time estimations of regional tsunami service providers (RTSPs) could be improved. In particular, the detection mechanisms have been eccentrically focussed on Sunda and Makran tsunamis, although tsunamis from Carlsberg ridge and Chagos archipelago could generate devastating tsunamis for which inadequate provisions exist for detection and arrival time/wave height estimation. RTSPs resort to assess estimated arrival time/wave heights from a scenario-based, pre-simulated database. These estimations in terms of Sri Lanka have been found inconsistent. In addition, current warning mechanism poorly manages non-seismic tsunamis. Thus, the purpose of this study is to investigate these drawbacks and attempt to carve out a series of suggestions to improve them.

The work initiated with data retrieved from global earthquake and tsunami databases, followed by an estimation of probabilities of tsunamis in the Indian Ocean with particular emphasis on Carlsberg and Chagos tsunamis. Second, probabilities of tsunami detection in each sub-region have been estimated with the use of available tide gauge and tsunami buoy data. Third, the difficulties in tsunami detection in the Indian Ocean are critically assessed with case studies, followed by recommendations to improve the detection and warning.

Probabilistic estimates show that given the occurrence of a significant earthquake, both Makran and Carlsberg/Chagos regions possess higher probabilities to harbour a tsunami than the Sunda subduction zone. Meanwhile, reliability figures of tsunami buoys have been declined from 79-92 to 68-91 per cent over the past eight years. In addition, a Chagos tsunami is left to be detected by only one tide gauge prior to it reaching Sri Lankan coasts.

The study uses an averaged tsunami speed of 882 km/h based on 2004 Asian tsunami. However, using exact bathymetric data, Tsunamis could be simulated to derive speeds and arrival times more accurately. Yet, such refinements do not change the main derivations and conclusions of this study.

Tsunami detection and warning in the Indian Ocean region have shown room for improvement, based on the inadequate detection levels for Carlesberg and Chagos tsunamis, and inconsistent warnings of regional tsunami service providers. The authors attempted to remedy these drawbacks by proposing a series of suggestions, including a deployment of a new tsunami buoy south of Maldives, revival of offline buoys, real-time tsunami simulations and a strategy to deal with landslide tsunamis, etc.

Indian Ocean is prone to mega tsunamis as witnessed in 2004. However, more than 50 per cent of people in the Indian Ocean rim countries dwell near the coast. This is verified with deaths of 227,898 people in 14 countries during the 2004 tsunami event. Thus, it is of paramount importance that sufficient detection levels are maintained throughout the Indian Ocean without being overly biased towards Sunda tsunamis. With respect to Sri Lanka, Makran, Carlesberg or Chagos tsunamis could directly hit the most populated west coast and bring about far worse repercussions than a Sunda tsunami.

This is the first instance where the threats from Carlesberg and Chagos tsunamis to Sri Lanka are discussed, probabilities of tsunamis are quantified and their detection levels assessed. In addition, reliability levels of tsunami buoys and tide gauges in the Indian Ocean are recomputed after eight years to discover that there is a drop in reliability of the buoy data. The work also proposes a unique approach to handle inconsistencies in the bulletins of regional tsunami service providers, and to uphold and improve dwindling interest on tsunami buoys.

This paper aims to conduct a comprehensive literature review in the tidal energy physics, the ocean environment, hydrodynamics of horizontal axis tidal turbines and bio-mimicry.

The paper provides an insight of the tidal turbine blade design and need for renewable energy sources to generate electricity through clean energy sources and less CO₂ emission. The ocean environment, along with hydrodynamic design principles of a horizontal axis tidal turbine blade, is described, including theoretical maximum efficiency, blade element momentum theory and non-dimensional forces acting on tidal turbine blades.

This review gives an overview of fish locomotion identifying the attributes of the swimming like lift-based thrust propulsion, the locomotion driving factors: dorsal fins, caudal fins in propulsion, which enable the fish to be efficient even at low tidal velocities.

Finally, after understanding the phenomenon of caudal fin propulsion and its relationship with tidal turbine blade hydrodynamics, this review focuses on the implications of bio-mimicking a curved caudal fin to design an efficient horizontal axis tidal turbine.