Post by Chirps Captain on Mar 24, 2022 11:11:46 GMT -6
• Black ice: clear lake ice
• Snow Ice: Frozen snow slush on the top surface of an ice sheet.
• Meringue ice: weak ice made from partially saturated snow builds up from loose snow blowing over wet areas. Common over gas holes, wide wet cracks and folded pressure ridges.
• Thawing: The process of ice melting. It occurs on the ice surfaces and internally.
• Cold ice: ice below freezing (even a little). Warm ice is at or very near freezing.
• Layered Ice: (Also called sandwich ice}. A sandwich of snow ice, slush, and/or water with black ice on the bottom. Occurs after snow submerges an ice sheet. Can be treacherous. Layered ice is only as strong as the black ice in the bottom layer.
• Splash-out ice: white ice from waves splashing shore or an ice sheet. A common indicator of former open water at ice edges and on recently refrozen holes.
• Overlapped pressure ridge: a rupture in an ice sheet caused by thermal expansion. One side of the rupture rides over the other. There is often weak ice or loose plates near the ridge. More on pressure ridges
• Folded pressure ridge: A ridge where the plates buckle down into the water rather than riding over each other. There is often a deep puddle in the center.
• Tectonic crack: a characteristic crack that is associated with ridges.
• Tight cracks: cracks that are closed at the top. An occasional source of tripping.
• Open cracks: cracks that are open at the top, even a little. A common source of tripping. (usually when the skate is closely aligned with the crack).
• Wet cracks: cracks with water in them, usually 1/8” to 1” wide but can be up to a foot or more on big ice (called Wide wet cracks).
• Lead: a wide crack that forms when one part of an ice sheet separates from other. Most likely to form when the ice is reasonably thin (few inches to a couple of feet), when the ice sheet is warming and when pressure ridges are forming.
• Dry shell ice: thin white ice that forms over a puddle that drained away. Easy to see so dry shell is only a moderate tripping hazard.
• Wet shell ice: thin ice over a puddle on top of an ice sheet. Hard to see and a significant tripping hazard. Usually found after a thaw.
• Overnight Ice: Ice that forms refreezes in cold weather overnight. It is the ice that forms new ice over holes or ridges or hardens the top inch or so of well thawed ice (typically in the spring).
• Rotten Candled Ice: Very unreliable and unpredictable ice that occurs in fine grained ice in an advanced thaw condition. When you step on it, if you don't fall through, it gives a little as the vertical crystals shift. Skilled use of your test pole can often (but not always) identify it.
• Ice edge: where older ice meets open water or thin new ice.
• Hole: an area of open water that is surrounded by ice. Note: a hole is often still referred to as a hole after it has a thin skin of ice over it.
• New-ice hole: a common hole found in new black ice.
• Gas hole: formed by persistent sources of marsh gas. Most common over river deltas.
• Drain holes: from water draining through an ice sheet. Most common in ice less than a few inches thick after a wet thaw.
• Reef hole: hole or thin ice over shallow spot in other wise deeper water
• Current hole: place where current keeps the water open. Common under bridges, in rivers and in lakes that have river like attributes.
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Have any to add? Post below and we will be sure to get them added to this list for all of our community members!
• Snow Ice: Frozen snow slush on the top surface of an ice sheet.
• Meringue ice: weak ice made from partially saturated snow builds up from loose snow blowing over wet areas. Common over gas holes, wide wet cracks and folded pressure ridges.
• Thawing: The process of ice melting. It occurs on the ice surfaces and internally.
• Cold ice: ice below freezing (even a little). Warm ice is at or very near freezing.
• Layered Ice: (Also called sandwich ice}. A sandwich of snow ice, slush, and/or water with black ice on the bottom. Occurs after snow submerges an ice sheet. Can be treacherous. Layered ice is only as strong as the black ice in the bottom layer.
• Splash-out ice: white ice from waves splashing shore or an ice sheet. A common indicator of former open water at ice edges and on recently refrozen holes.
• Overlapped pressure ridge: a rupture in an ice sheet caused by thermal expansion. One side of the rupture rides over the other. There is often weak ice or loose plates near the ridge. More on pressure ridges
• Folded pressure ridge: A ridge where the plates buckle down into the water rather than riding over each other. There is often a deep puddle in the center.
• Tectonic crack: a characteristic crack that is associated with ridges.
• Tight cracks: cracks that are closed at the top. An occasional source of tripping.
• Open cracks: cracks that are open at the top, even a little. A common source of tripping. (usually when the skate is closely aligned with the crack).
• Wet cracks: cracks with water in them, usually 1/8” to 1” wide but can be up to a foot or more on big ice (called Wide wet cracks).
• Lead: a wide crack that forms when one part of an ice sheet separates from other. Most likely to form when the ice is reasonably thin (few inches to a couple of feet), when the ice sheet is warming and when pressure ridges are forming.
• Dry shell ice: thin white ice that forms over a puddle that drained away. Easy to see so dry shell is only a moderate tripping hazard.
• Wet shell ice: thin ice over a puddle on top of an ice sheet. Hard to see and a significant tripping hazard. Usually found after a thaw.
• Overnight Ice: Ice that forms refreezes in cold weather overnight. It is the ice that forms new ice over holes or ridges or hardens the top inch or so of well thawed ice (typically in the spring).
• Rotten Candled Ice: Very unreliable and unpredictable ice that occurs in fine grained ice in an advanced thaw condition. When you step on it, if you don't fall through, it gives a little as the vertical crystals shift. Skilled use of your test pole can often (but not always) identify it.
• Ice edge: where older ice meets open water or thin new ice.
• Hole: an area of open water that is surrounded by ice. Note: a hole is often still referred to as a hole after it has a thin skin of ice over it.
• New-ice hole: a common hole found in new black ice.
• Gas hole: formed by persistent sources of marsh gas. Most common over river deltas.
• Drain holes: from water draining through an ice sheet. Most common in ice less than a few inches thick after a wet thaw.
• Reef hole: hole or thin ice over shallow spot in other wise deeper water
• Current hole: place where current keeps the water open. Common under bridges, in rivers and in lakes that have river like attributes.
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Have any to add? Post below and we will be sure to get them added to this list for all of our community members!