Interim report on salt-water encroachment in Dade County, Florida

Recently there has been much activity in reclaiming the low-lying coastal areas of Dade County for residential use, by the addition of fill. The fill is obtained by digging canals both normal to and parallel to Biscayne Bay. The canals serve the additional purpose of providing an access to the Bay for boats. A problem needing to be considered is the effect that these canals will have on the ground-water resources. It is expected that the canals will have little effect on ground water in parts of the county distant from the coast, but their effect in coastal areas is a matter of concern. In order to predict what, may happen in the vicinity of these new canals if they are not equipped with adequate control structures, it is instructive to review what has happened in the vicinity of similar canals in the past. The U. S. Geological Survey, in cooperation with Dade County, the cities of Miami and Miami Beach, the Central and Southern Florida Flood Control District, and the Florida Geological Survey has collected water-level and salinity data on wells and canals in Dade County since 1939. Some of the agencies named, and others, collected similar data before 1939. Analysis of all the data shows that sea water in the Atlantic Ocean and Biscayne Bayis the sole source of salt-water contamination in the Biscayne aquifer of the Dade County area. (PDF has 19 pages.)

Biscayne aquifer in Dade and Broward Counties, Florida

The Biscayne Aquifer is the principal source of water for the heavily populated area in the vicinity of West Palm Beach and Miami. The publication of this data is timely and will assist in the intelligent development of the water resources of the area.(PDF has 64 pages)

Quantum simulations of relativistic quantum physics in circuit QED

We present a scheme for simulating relativistic quantum physics in circuit quantum electrodynamics. By using three classical microwave drives, we show that a superconducting qubit strongly coupled to a resonator field mode can be used to simulate the dynamics of the Dirac equation and Klein paradox in all regimes. Using the same setup we also propose the implementation of the Foldy-Wouthuysen canonical transformation, after which the time derivative of the position operator becomes a constant of the motion.

25. Sitzung des FAO/WHO Codex-Alimentarius-Komitees für Fische und Fischereierzeugnisse

Die 25. Sitzung des Komitees für Fische und Fischereierzeugnisse fand vom 3. bis 7. Juni 2002 in Aales und, Norwegen, statt. Die Tagung wurde von 131 Delegierten und Beobachtern aus 41 Mitgliedsstaaten und 2 internationalen Organisationen sowie FAO- und WHO-Personal (4)besucht. Die größten Delegationen stellten Frankreich (7), Thailand (7), USA (10) und Norwegen als Gastgeber (13).Die deutsche Delegation wurde von Dr. Achim Viereck(BMVEL) geleitet. Weitere Mitglieder waren Prof. Jörg Oehlenschläger (BFAFi, Sprecher), Dr. Andrea Sanwidi (BMVEL), Dr. Reinhard Schubring (BFAFi), Dr. Günter Klein (BgVV) und Dr. Jörn Scabell (Frozen Fish International als Vertreter des Bundesverbandes der deutschen Fischindustrie und des Fischgroßhandels). Die Sitzung, die von Peter Gullestad, dem norwegischen Generaldirektor für Fischerei, eröffnet wurde, leitete Dr. Bjorn Rothe Knudtsen, Regionaldirektor des norwegischen Direktorats für Fischerei und Aquakultur, Trondheim.