AnnualReport-1931 — Page 233

Administrative Reports 行政報告書 All AI Reviewed

F 20-

IX.-MISCELLANEOUS.

alterations were made to the

71. Seismograph.-No alterations were made to the seismograph during the year. New needle points were fitted as required. 386 earthquakes were recorded during the year 1931 as against 320 in 1930. The seismograms have been forwarded to the President of the International Seismological Committee, Oxford, to be dealt with.

The

72. Local Earthquake. An earthquake shock was felt at Hong Kong on September 21. No damage occurred. The origin was about 60 miles to the east of Hong Kong.

73. Upper Air Research.-356 balloon ascents were made during the year. 33 meteorological flights were made by officers of the R.A.F. Tephigrams were constructed from the observations thus obtained and the weather during the subsequent 24 hours noted thereon. It is hoped that a discussion of a large number of these tephigrams will be a considerable aid to weather forecasting in the future.

74. The results of the pilot balloon observations have been forwarded monthly to the Secretary of the International Commission for the exploration of the upper air.

75. The Washington Weather Bureau has been supplied, monthly, with Upper Air Wind Rose Data for 750, 1500 and 3000 metres above Hong Kong.

76. The following days were selected by the International Commission as days for International ascents:-February 9-14, June 15-20 and October 13-15. February was chosen as the "International Month". Balloon ascents were made on June 15-20 and October 13-15. The sky was completely overcast from February 9-14.

77. The Postmaster General was unable to accede to my request that watch should be kept for the experimental short wave emission from Paris on July 11, 18 and 28.

78. Lithographic work.-The following lithographic work was done at the Observatory for other departments.

(a) Forms for temperature charts for the Government Civil Hospital.

(b) Plan to accompany Game Licenses ordinance.

(d) Map of Hong Kong for the Dominions Office and Colonial Office List.

(e) Maps of shipping routes for the Harbour Department, required in connection with draft rules relating to life saving appliances for passenger ships.

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F 20- IX.-MISCELLANEOUS. alterations were made to the 71. Seismograph.-No alterations were made to the seismograph during the year. New needle points were fitted as required. 386 earthquakes were recorded during the year 1931 as against 320 in 1930. The seismograms have been forwarded to the President of the International Seismological Committee, Oxford, to be dealt with. The 72. Local Earthquake. An earthquake shock was felt at Hong Kong on September 21. No damage occurred. The origin was about 60 miles to the east of Hong Kong. 73. Upper Air Research.-356 balloon ascents were made during the year. 33 meteorological flights were made by officers of the R.A.F. Tephigrams were constructed from the observations thus obtained and the weather during the subsequent 24 hours noted thereon. It is hoped that a discussion of a large number of these tephigrams will be a considerable aid to weather forecasting in the future. 74. The results of the pilot balloon observations have been forwarded monthly to the Secretary of the International Commission for the exploration of the upper air. 75. The Washington Weather Bureau has been supplied, monthly, with Upper Air Wind Rose Data for 750, 1500 and 3000 metres above Hong Kong. 76. The following days were selected by the International Commission as days for International ascents:-February 9-14, June 15-20 and October 13-15. February was chosen as the "International Month". Balloon ascents were made on June 15-20 and October 13-15. The sky was completely overcast from February 9-14. 77. The Postmaster General was unable to accede to my request that watch should be kept for the experimental short wave emission from Paris on July 11, 18 and 28. 78. Lithographic work.-The following lithographic work was done at the Observatory for other departments. (a) Forms for temperature charts for the Government Civil Hospital. (b) Plan to accompany Game Licenses ordinance. (c) Plan of arrangements for Armistice Day celebrations. (d) Map of Hong Kong for the Dominions Office and Colonial Office List. (e) Maps of shipping routes for the Harbour Department, required in connection with draft rules relating to life saving appliances for passenger ships.

Baseline (Original)

F 20- IX.-MISCELLANEOUS. alterations were made to the 71. Seismograph.-No seismograph during the year. New needle points were fitted as required. 386 earthquakes were recorded during the year 1931 as against 320 in 1930. The seismograms have been for- warded to the President of the International Seismological Committee, Oxford, to be dealt with. The 72. Local Earthquake. An earthquake shock was felt at Hong Kong on September 21. No damage occurred. origin was about 60 miles to the east of Hong Kong. 73. Upper Air Research.-356 balloon ascents were made during the year. 33 meteorological flights were made by officers of the R.A.F. Tephigrams were constructed from the observa- tions thus obtained and the weather during the subsequent 24 hours noted thereon. It is hoped that a discussion of a large number of these tephigrams will be a considerable aid to weather forecasting in the future. 74. The results of the pilot balloon observations have been forwarded monthly to the Secretary of the International Com. mission for the exploration of the upper air. 75. The Washington Weather Bureau has been supplied, monthly, with Upper Air Wind Rose Data for 750, 1500 and 3000 metres above Hong Kong, 76. The following days were selected by the International Commission as days for International ascents:-February 9-14, June 15-20 and October 13-15. February was chosen as the "International Month". Balloon ascents were made on June 15-20 and October 13-15. The sky was completely overcast from February 9-14. 77. The Postmaster General was unable to accede to my request that watch should be kept for the experimental short wave emission from Paris on July 11. 18 and 28. 78. Lithographic work.The following lithographic work was done at the Observatory for other departments. (a) Forms for tenperature charts for the Government Civil Hospital. (b) Plan to accompany Game Licenses ordinance. (c) Plan of arrangements for Armistice Day celebrations. (d) Map of Hong Kong for the Dominions Office and Colonial Office List. (e) Maps of shipping routes for the Harbour Depart- ment, required in connection with draft rules relating to life saving appliances for passenger ships.

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F 20-

IX.-MISCELLANEOUS.

alterations

were made to the

71. Seismograph.-No seismograph during the year. New needle points were fitted as required. 386 earthquakes were recorded during the year 1931 as against 320 in 1930. The seismograms have been for- warded to the President of the International Seismological Committee, Oxford, to be dealt with.

The

72. Local Earthquake. An earthquake shock was felt at Hong Kong on September 21. No damage occurred. origin was about 60 miles to the east of Hong Kong.

73. Upper Air Research.-356 balloon ascents were made during the year. 33 meteorological flights were made by officers of the R.A.F. Tephigrams were constructed from the observa- tions thus obtained and the weather during the subsequent 24 hours noted thereon. It is hoped that a discussion of a large number of these tephigrams will be a considerable aid to weather forecasting in the future.

74. The results of the pilot balloon observations have been forwarded monthly to the Secretary of the International Com. mission for the exploration of the upper air.

75. The Washington Weather Bureau has been supplied, monthly, with Upper Air Wind Rose Data for 750, 1500 and 3000 metres above Hong Kong,

77. The Postmaster General was unable to accede to my request that watch should be kept for the experimental short wave emission from Paris on July 11. 18 and 28.

78. Lithographic work.The following lithographic work was done at the Observatory for other departments.

(a) Forms for tenperature charts for the Government

Civil Hospital.

(b) Plan to accompany Game Licenses ordinance. (c) Plan of arrangements for Armistice Day celebrations. (d) Map of Hong Kong for the Dominions Office and

Colonial Office List.

(e) Maps of shipping routes for the Harbour Depart- ment, required in connection with draft rules relating to life saving appliances for passenger ships.

AnnualReport-1931 — Page 233

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