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Science & Tech

سر “العباءة”.. أصداف القواقع تعيد رسم أعاصير الماضي

By الجزيرة - رياضة · 1 hour ago · 1 min read الجزيرة - رياضة ↗

ما يعرفه ريفو عن الخبر

تعد أصداف الحلزونات سجلات طبيعية يمكن استخدامها لإعادة رسم خرائط الأعاصير والظواهر الجوية المتطرفة في عصور ما قبل التاريخ.
كشفت دراسة حديثة أن حلقات النمو في صدفة حلزون بيغندن المخطط ترتبط بوضوح بأحداث جوية شديدة مثل الأمطار الغزيرة جداً.
تتميز هذه الأصداف بقدرتها على تقديم تفاصيل دقيقة حول الظروف البيئية وتغيرات المناخ مقارنة بحلقات نمو الأشجار.
تساعد تحليلات كربونات الكالسيوم ونظائر الكربون والأكسجين في الصدفة على تحديد كميات الأمطار والظروف الجوية التي عاشها الحلزون.

تحمل أصداف القواقع سجلات عن أحوال الطقس يمكن استخدامها في رسم خرائط للأعاصير التي ضربت مناطق مختلفة في عصور ما قبل التاريخ، وفقا لدراسة جديدة أجرتها جامعة كوينزلاند الأسترالية.

المصدر: الجزيرة – رياضة

#أستراليا

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