任向文--基于 stella 的富钴结壳mn 元素沉积的系统动力学模型研究

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1、任向文--基于STELLA的富钴结壳Mn元素沉积的系统动力学模型研究第?42?卷增刊?2?2011?年?9?月?中南大学学报(自然科学版)?Journal?of?Central?South?University?(Science?and?Technology)?Vol.42?Suppl.?2?Sep.?2011?基于?STELLA?的富钴结壳Mn元素沉积的系统动力学模型研究任向文，石学法，杨刚?(国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室，山东青岛，266061)?摘要：基于系统动力学建模软件包?STELLA，建立富钴结壳中Mn元素沉积的系统动力学模型。该模型包含的控2+?

2、矿要素有海山沉降和海水中溶解氧含量、海水pH和海水中Mn?含量等，并假定Mn元素沉降的水深范围是最小含氧带核心到富钴结壳样品产出水深。研究结果表明：富钴结壳中的Mn元素是最小含氧带核心到富钴结壳样品2+?产出水深的深度范围内，水柱中?Mn?氧化、清扫和积累的结果；在研究富钴结壳中?Mn?元素的控矿要素时，Nd?同位素所记录的局地的控矿要素是不全面的；富钴结壳中Mn元素的沉积通量对于富钴结壳产出水深的变化是敏感的；最小含氧带———————————————————————————————————————————————移动，或者由海山沉降导致的Mn?元素沉降水深的深度范围的变化，可以对富钴结壳?M

3、n的成矿产生重要影响，是不容忽视的控矿要素。关键词：富钴结壳；系统动力学；STELLA?中图分类号：P744.3?文献标志码：A?文章编号：1672?7207(2011)S2?0083?06?A?preliminary?systematic?dynamic?model?of?Mn?precipitation?into?Co-rich?manganese?crusts?based?on?STELLA?REN?Xiang-wen,?SHI?Xue-fa,?YANG?Gang?(Key?Laboratory?of?Marine?Sedimentology?and?Environmental?Geol

4、ogy,?First?Institute?ofOceanography,?State?Oceanic?Administration,?Qingdao?266061,?China)?Abstract:?Based?on?systematic?dynamics?modeling?software?STELLA,?a?preliminary?systematic?dynamic?model?of?Mn?precipitation?into?Co-rich?manganese?crusts?was?set?up.?The?ore-controlling?factors?in?this?model?in

5、clude?submerging?of?2+?seamount,?dissolved?oxygen,?pH?of?seawater,?and?Mn?concentration?in?seawater.?And?in?this?model,?the?water?range?of?———————————————————————————————————————————————Mn?precipitating?is?from?the?core?of?oxygen?minimum?zone?(OMZ)?to?the?water?depth?where?the?Co-rich?manganese?crus

6、ts?occurred.?The?results?show?that?Mn?is?oxidized,?scavenged,?and?accumulated?in?the?water?column?from?the?core?of?OMZ?to?the?slope?of?seamount.?The?local?ore-controlling?factors?such?as?those?recorded?by?Nd?isotope?can?not?constrain?the?precipitation?of?Mn.?The?flux?of?Mn?into?Co-rich?manganese?cru

7、sts?is?sensitive?to?the?variation?of?water?depth.?Therefore,?the?variation?of?water?depth?range?of?Mn,?which?resulted?from?the?variation?of?OMZ?or?the?subsidence?of?seamounts,?has?significant?effect?o