Equilibrium coastal profiles: II. Evidence from EOF analysis

Gao Shu; Michael Collins; John Cross

doi:10.1007/BF02848723

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Equilibrium coastal profiles: II. Evidence from EOF analysis

OriginalPaper | Updated：2023-05-16

- Equilibrium coastal profiles: II. Evidence from EOF analysis
- Equilibrium coastal profiles: II. Evidence from EOF analysis
- 海洋湖沼学报（英文） 1998年16卷第3期页码：193-205
- Affiliations：
  
  1. Institute of Oceanology
  2. Department of Oceanography The University
- Author bio：
- Funds：
  
  Contribution No 3335 from the Institute of Oceanology, Chinese Acodemy of Sciences.;Project supported by the SCOPAC (UK) and the CAS (through the “Hundred Talent Programme”, No. A10970203)
- DOI：10.1007/BF02848723
  中图分类号：
- 纸质出版：1998
- Accepted：
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Equilibrium coastal profiles: II. Evidence from EOF analysis[J]. 海洋湖沼学报（英文）, 1998,16(3):193-205.

Shu, G., Collins, M. & Cross, J. Equilibrium coastal profiles: II. Evidence from EOF analysis., Chin. J. Ocean. Limnol. 16, 193–205 (1998). https://doi.org/10.1007/BF02848723
Equilibrium coastal profiles: II. Evidence from EOF analysis[J]. 海洋湖沼学报（英文）, 1998,16(3):193-205. DOI： 10.1007/BF02848723.

Shu, G., Collins, M. & Cross, J. Equilibrium coastal profiles: II. Evidence from EOF analysis., Chin. J. Ocean. Limnol. 16, 193–205 (1998). https://doi.org/10.1007/BF02848723 DOI：

摘要

Abstract

The validity of the concept of coastal equilibrium depends upon a proof of the existence of equilibrium. In addition

the methods of calculating the actual equilibrium profile and the response time are required. This study evaluates equilibrium conditions using evidence from EOF (empirical orthogonal function) analysis of the coastal profile data (bed slopes and associated elevations) obtained from Poole and Christchurch Bays

southern England. The preliminary results show that the largest eigenvalue is much greater than the other eigenvalues and the temporally-related eigenfunction is stationary; this observation implies the existence of equilibrium. Further

the spatially-related eigenfunction associated with the largest eigenvalue is used to calculate the actual beach profile at equilibrium. Although the temporal eigenfunction may fluctuate

it recovers rapidly

indicating that the response time is short. However

further studies are required to determine the response time accurately.

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references

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