Multi-isotope analysis of palaeofauna sequences as indicators of past environments and climates

古动物序列的多同位素分析作为过去环境和气候的指标

• 批准号: RGPIN-2015-03836
• 负责人: Richards, Michael
• 金额: $ 1.41万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634053
• 关键词: Multi; isotope; analysis; palaeofauna; sequences

Landscapes have changed dramatically over the past 100,000 years, largely due to changes in the Earth’s climate. We can see evidence for the changes in the species and types of plants and animals that live in these landscapes over this time from their remains that have been preserved and then recovered from palaeontological and archaeological sites. We also have evidence for how much the climate has changed globally from the measurements of isotope signatures in ice cores recovered from the north and south poles. However, we have few methods of determining how the climate and environment changed locally when we are looking at landscapes in specific areas and regions. The ice core record records global climates, but locally there can be micro-climates that may have different climate and environmental changes than is recorded in the ice cores. It is also possible to get a record of the climate from lake sediments, if there is a nearby body of water suitable for this analysis.

在过去的10万年里，地貌发生了巨大的变化，这主要是由于地球气候的变化。我们可以从这些景观中生活的植物和动物的物种和类型的变化中看到证据，这些变化来自于它们的遗骸，这些遗骸被保存下来，然后从古生物和考古遗址中恢复。我们也有证据表明，从北极和南极回收的冰芯中的同位素特征测量中，全球气候发生了多大的变化。然而，当我们观察特定地区和区域的景观时，我们几乎没有确定当地气候和环境变化的方法。冰芯记录记录了全球气候，但局部可能存在微气候，这些微气候可能具有与冰芯记录不同的气候和环境变化。如果附近有适合进行这种分析的水体，也可以从湖泊沉积物中获得气候记录。