Microseisms at Bermuda

From and examination of above normal microseisms recorded on the Bermuda Milne‐Shaw seismograph over several hurricane and winter seasons, it was found that in all cases, if the periods were 4 to 5 seconds or if the microseisms were strong, they could be attributed indirectly to local weather conditions. Occasionally weak 7 to 10 second microseisms could be traced to storm conditions from as far away as the coast of Alaska, but absorption of all microseisms across the northwest Atlantic is relatively high. Strong microseisms may be generated when local storm conditions are not apparent but when the wind is favorable for the production of opposing swells.