Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

Bibliographic data

Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 6 Hydrology: Surface water, oceanography, coastal zone, ice and snow. Chairman: K. A. Ulbricht, Co-chairman: Mikio Takagi, Liaison: R. Spanhoff

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Remote sensing of flow characteristics of the strait of Öresund. L. Jönsson

Document type:: Multivolume work

Structure type:: Chapter

725 in the ring rainy es water life and et in shing ng salinity, Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 Remote sensing of flow characteristics of the strait of Öresund L.Jonsson Dept, of Water Resources Engineering, University of Lund, Sweden N r 200 0MicroMHOi) ¡2000-0000) 00) vs that 3n with Increases , Lative jcreases. that area ldwater, but in respect m be used .e water. , sedimenta- îter poten- :n India, ione, New f the North Districts, 3m; System Voi.7, ABSTRACT: The strait of Öresund is located in a densely populated region and subject to many activities. Thus, it is important to understand the flow characteristics of the strait properly. The paper presents results of the use of NOAA and Landsat imagery for exracting information on the large-scale flow pattern and the possibility of distinguishing certain flow phenomena. These findings are discussed in relation to known properties of the hydrography of Öresund. The remotely sensed flow information is also discussed as far as numerical modelling of the flow in Öresund is concerned. RESUME: Le détroit d 1 Öresund est situé dans une region populeuse exposé a beaucoup d'activités. Ainsi c'est important de savoir les mouvements de l'eau profondément. Cet article present des résultats de l'utilisation de NOAA et Landsat data pour l'extraction d'information sur la circulation a grande échelle et sur la possibilité de découvrir certains phénomènes hydrodynamiques. Ces résultats sont discutés en relation avec la nature de l'hydrographie d'Öresund. L'information d'écoulement obtenu avec télêdetéction est aussi discuté en relation avec des modèles numériques d'écoulement en Öresund. 1 INTRODUCTION Knowledge of hydrodynamic processes and circulation patterns in coastal waters is important when conside ring resource or quality aspects of the waters or in connection with technical/constructional measuers in the coastal zone. Data on large-scale water circula tion by means of satellite imaging provide one type of information which could be used either directly or in connection with numerical flow models for in creasing this knowledge. This paper discusses the use of NOAA and Landsat data from the strait of Oresund. The study has been made possible by the support of the Swedish Space Corporation, the Swedish Natural Science Research Council and the University of Lund. 2 BACKGROUND The strait of Öresund forms one connection between the southern part of the Baltic Sea and Kattegatt (Fig. 1). The length is approximately 100 km and the width 10-20 km. The flow in the strait is rather complex and at times one could distinguish three different water types - Baltic water with salinity S = 8-10 o/oo, Kattegatt surface water S = 18-24 o/oo and Kattegatt bottom water S = 30-34 o/oo. The surface flows to the north 66% and to the south 34% of the time mainly due to wind and pressure induced water level diffe rences between Kattegatt and the Baltic. The most common overall flow could be described as a two-layer flow situation with northbound surface flow and southbound bottom flow. However, the bottom flow is normally blocked by the shallow-8-10 m - depth in the southern part of the strait. Thus one could think of Öresund as an estuary for the "river" Baltic most of the time (HarremoBs et al 1966). The main types of surface flow patterns based on (rather scarce) field measurements are shown in Fig. 1. Öresund is bordered by densely populated areas im plying a heavy demand on the coastal water for a num ber of sometimes conflicting uses. This is one rea son, besides purely technical aspects, why detailed investigations of the consequences of interferences with the coastal waters are often needed. Thus a num ber of studies have been performed involving knowled ge of and consequences for the flow behaviour in more or less detail. In several cases numerical modelling of the flow has been used. In other cases the prob lems have been approached by means of physical model ling, prototype simulations or rather simplified cal culations. Some examples are given below (ref. Fig. 2) A - an intended railway tunnel on the bottom of the strait. Risk for blocking of salt, nutritious bottom water. Ecological consequences. Numerical models based on vertically or laterally integrated hydrody namic equations. B - planned, extensive land fillings which might affect water exchange, navigation, erosion. Studied by means of vertically integrated (shallow water) flow equations. C - discharge of cooling water from nuclear power Figure 1. Large-scale flow pattern in Öresund. Northbound flow.

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