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Storminess And High Tide Beach Change, Stanwell Park, Australia 1943-1978, Edward A. Bryant
Storminess And High Tide Beach Change, Stanwell Park, Australia 1943-1978, Edward A. Bryant
Faculty of Science - Papers (Archive)
Coastal storms have been considered significant agents in transporting sediment, modifying morphology and causing recent beach erosion. Along the New South Wales coast, the concomitance of storms, warmer sea surface temperatures and poleward movement of the Hadley cell was linked to beach erosion on Stanwell Park beach between 1943 and 1978. This result was defined using an accurately constructed compilation of coastal storms and a precisely measured time series of high tide positions taken from 105 oblique photographs. The two data sets are amongst the best of their kind in the world. Indices of storm magnitude, representing cumulative significant wave …
On Weighing Matrices With Square Weights, D G. Sarvate, Jennifer Seberry
On Weighing Matrices With Square Weights, D G. Sarvate, Jennifer Seberry
Faculty of Informatics - Papers (Archive)
We give a new construction for a known family of weighing matrices using the 2-adjugate method of Vartak and Patwardhan. We review the existence of W(n,k²), k = 1,.. ,12, giving new results for k = 8,...12.
Bhaskar Rao Designs Over Small Groups, William D. Palmer, Jennifer Seberry
Bhaskar Rao Designs Over Small Groups, William D. Palmer, Jennifer Seberry
Faculty of Informatics - Papers (Archive)
We show that for each of the groups S3, D4, Q4, Z4 x Z2 and D6 the necessary conditions are sufficient for the existence of a generalized Bhaskar Rao design. That is, we show that: (i) a GBRD (v, 3, λ; S3) exists if and only if λ ≡ O (mod 6 ) and λv(v - 1) ≡ O(mod 24); (ii) if G is one of the groups D4, Q4, and Z4 x Z2, a GBRD (v, 3, λ; G) exists if and only …
Australia—An Unstable Platform For Tide-Gauge Measurements Of Changing Sea Levels: A Discussion, Edward A. Bryant, P. S. Roy, B. G. Thom
Australia—An Unstable Platform For Tide-Gauge Measurements Of Changing Sea Levels: A Discussion, Edward A. Bryant, P. S. Roy, B. G. Thom
Faculty of Science - Papers (Archive)
The recent detailed analyses by Aubrey and Emery (1986) of Australian sea level trends continues their efforts to define tectonic and climatic factors worldwide that dominate long- and short-term fluctuations respectively in sea level records. These factors have included sediment and water loading on the adjacent shelf, the tectonic behaviour of plates, fluctuations in the Southern Oscillation, behaviour of currents impinging on the shelf, and river runoff. We do not object to these efforts; however we are disturbed by misrepresentations in their recent paper on Australian sea levels regarding (1) the interpretation of the nature of sea-level records, (2) the …
Sea-Level Variability And Its Impact Within The Greenhouse Scenario, Edward A. Bryant
Sea-Level Variability And Its Impact Within The Greenhouse Scenario, Edward A. Bryant
Faculty of Science - Papers (Archive)
The greenhouse scenario assumes that sea level will rise worldwide at uniform rates because of near-polar ice melting or because of thermal expansion of ocean waters. This view ignores the natural variability of existing sea-level behaviour that occurs globally over time. It also ignores the fact that some of this variability is related to changes in climatic parameters such as precipitation, barometric pressure and temperature that will be influenced by the greenhouse effect. This paper presents existing evidence on sea-level variability across the globe and links it to changes in atmospheric pressure, air temperature and precipitation for the period 1933-1980. …
New Hadamard Matrices And Conference Matrices Obtained Via Mathon's Construction, Jennifer Seberry, Albert L. Whiteman
New Hadamard Matrices And Conference Matrices Obtained Via Mathon's Construction, Jennifer Seberry, Albert L. Whiteman
Faculty of Informatics - Papers (Archive)
We give a formulation, via (1, - 1) matrices, of Mathon's construction for conference matrices and derive a new family of conference matrices of order 5·9²r+1 + 1, t ≥ 0. This family produces a new conference matrix of order 3646 and a new Hadamard matrix of order 7292. In addition we construct new families of Hadamard matrices of orders 6.9²r+1+ 2, 10.9²t+1 + 2, 8·49·9², t ≥ 0; q2(q + 3) + 2 where q ≡ 3 (mod 4) is a prime power and 1/2(q + 5) is the order of a skew-Hadamard matrix); (q + 1)q².9t, t ≥ …
Some Results On The Excesses Of Hadamard Matrices, Brett A. Jenkins, C Koukouvinos, S Kounias, Jennifer Seberry, Ralph Seberry
Some Results On The Excesses Of Hadamard Matrices, Brett A. Jenkins, C Koukouvinos, S Kounias, Jennifer Seberry, Ralph Seberry
Faculty of Informatics - Papers (Archive)
We give some results on the excess of Hadamard matrices. We give a list for Hadamard matrices of order ≤1000 of the smallest upper bounds known for the excess for each order. A construction is indicated for the maximal known excess.